Integrated electronic component and resonant converter circuit

Abstract

An integrated electronic component for a converter is provided, including a magnetic core, a first primary winding, a second primary winding, a first secondary winding, and a second secondary winding. The magnetic core has a first post and a second post spaced apart, wherein the first post and the second post are located on a magnetic flux path. The first primary winding and the first secondary winding are wound on the first post, and the second primary winding and the second secondary winding are wound on the second post. The first secondary winding and the second secondary winding are respectively coupled to at least one first rectifier switch and at least one second rectifier switch, and the at least one first rectifier switch and the at least one second rectifier switch have different on-times.

Description

[Technical Field]

[0001] This invention relates to resonant converter circuits, and more particularly to resonant converter circuits and integrated electronic components therein. [Previous Technology]

[0002] Current integrated transformers typically require multiple magnetic posts for winding. Since the leakage inductance of an integrated transformer affects the overall resonant inductance, a larger leakage inductance value can simplify transformer design. However, current methods for increasing leakage inductance involve either increasing the number of windings or disrupting the coupling between the primary and secondary sides of the transformer, leading to increased winding losses. A new design is needed to address these issues. [Summary of the Invention]

[0003] The present invention provides an integrated electronic component and resonant converter circuit, which can reduce winding losses, increase power conversion efficiency, and enhance energy saving and carbon reduction.

[0004] According to an embodiment of the present invention, an integrated electronic component for a converter is provided, including a magnetic core, a first primary winding, a second primary winding, a first secondary winding, and a second secondary winding. The magnetic core has a first post and a second post spaced apart, wherein the first post and the second post are located on a magnetic flux path. The first primary winding and the first secondary winding are wound on the first post, and the second primary winding and the second secondary winding are wound on the second post. The first secondary winding and the second secondary winding are respectively coupled to at least one first rectifier switch and at least one second rectifier switch, and the conduction periods of the at least one first rectifier switch and the at least one second rectifier switch are different.

[0005] According to one embodiment, the integrated electronic component further includes a third post, a first plate, and a second plate, wherein the third post is located on the magnetic flux path, the first post, the second post, and the third post are located between the first plate and the second plate, and a first direction in which the first plate and the second plate are stacked is perpendicular to a second direction in which the first post and the second post are arranged, and the first post, the second post, and the third post are arranged along the second direction. The major axis of the third post extends along a third direction, and the third direction is perpendicular to both the first and second directions.

[0006] The integrated electronic component further includes at least one window, the exposure direction of which is parallel to a third direction, and exposes the first primary winding, the second primary winding, the first secondary winding, and the second secondary winding.

[0007] According to one embodiment, the integrated electronic component further includes a fourth post, wherein the first post and the second post are located between the third post and the fourth post, and the first post, the second post, the third post and the fourth post are arranged along a second direction.

[0008] According to one embodiment, the first secondary side winding includes two first secondary side sub-windings, and the second secondary side winding includes two second secondary side sub-windings. The first secondary side sub-winding includes a top first secondary side sub-winding and a bottom first secondary side sub-winding, wherein the top first secondary side sub-winding is located between the first primary side winding and the first plate, and the bottom first secondary side winding is located between the first primary side winding and the second plate. The second secondary side winding includes a top second secondary side winding and a bottom second secondary side winding, wherein the top second secondary side winding is located between the second primary side winding and the first plate, and the bottom second secondary side winding is located between the second primary side winding and the second plate. The first secondary side sub-windings are connected and coupled to an output load circuit through a plurality of first conductive vias, and the second secondary side windings are connected and coupled to the output load circuit through a plurality of second conductive vias.

[0009] According to an embodiment of the present invention, a resonant converter circuit is provided, including a power supply, an integrated electronic component, a primary-side circuit, and a secondary-side circuit. The primary-side circuit is coupled between the power supply and the integrated electronic component, and the secondary-side circuit is coupled between the integrated electronic component and a ground terminal. The primary-side circuit includes a half-bridge switch, which includes a first switch and a second switch. The first switch is coupled between the power supply and a first node, and the second switch is coupled between the first node and the ground terminal. The integrated electronic component further includes a resonant circuit coupled between the first node and the ground terminal, and has a resonant capacitor, a magnetizing inductor, and a resonant inductor connected in series. The secondary-side circuit includes a rectifier circuit and an output load circuit. The rectifier circuit is coupled between a first secondary-side winding and a second secondary-side winding, and has a plurality of first rectifier switches and a plurality of second rectifier switches. The output load circuit is configured to output an output current.

[0010] In one positive half-cycle, the first switch and the first rectifier switch are turned on, and the second switch and the second rectifier switch are turned off. In one negative half-cycle, the first switch and the first rectifier switch are turned off, and the second switch and the second rectifier switch are turned on.

Implementation Method

[0012] Figure 1 is a circuit diagram of a resonant converter circuit 100 according to an embodiment of the present invention. The resonant converter circuit 100 includes a switching circuit 110, a resonant circuit 120, an integrated electronic component 130, a rectifier circuit 140, and an output load circuit 150. The primary side circuit of the resonant converter circuit 100 includes the switching circuit 110, which includes a power supply Vin for providing an input voltage, and switches S1 and S2 connected in series. Switch S1 is coupled between the power supply Vin and a node NS, while switch S2 is coupled between the node NS and a ground terminal. The integrated electronic component 130 includes the resonant circuit 120, which includes a resonant capacitor Cr, a resonant inductor Lr, and a magnetizing inductor Lm connected in series, wherein the magnetizing inductor Lm further includes magnetizing inductors Lm1 and Lm2. Furthermore, the resonant circuit 120 is coupled between the node NS and the ground terminal. The integrated electronic component 130 will be described below with reference to Figures 2 and 3.

[0013] The secondary side circuit of the resonant converter circuit 100 includes a rectifier circuit 140 and an output load circuit 150. The rectifier circuit 140 is coupled between the integrated electronic component 130 and the output load circuit 150, and includes rectifier switches SRa1, SRa2, SRb1, and SRb2. The conduction periods of rectifier switches SRa1, SRa2, and rectifier switches SRb1, SRb2 are different. That is, rectifier switches SRa1 and SRa2 are simultaneously on, while rectifier switches SRb1 and SRb2 are in a non-conducting period. Conversely, rectifier switches SRb1 and SRb2 are simultaneously on, while rectifier switches SRa1 and SRa2 are in a non-conducting period. The output load circuit 150 includes a load capacitor CL and a load resistor RL, and is configured to receive an output current from the rectifier circuit 140.

[0014] During a positive half-cycle, switch S1 is on and switch S2 is off, allowing current to flow into the integrated electronic component 130. At this time, to allow current to flow out to the output load circuit 150, rectifier switches SRa1 and SRa2 are on, and rectifier switches SRb1 and SRb2 are off. During a negative half-cycle, switch S2 is on and switch S1 is off, allowing current to flow out of the integrated electronic component 130. At this time, to allow current to flow out to the output load circuit 150, rectifier switches SRb1 and SRb2 are on, and rectifier switches SRa1 and SRa2 are off.

[0015] Figures 2 and 3 respectively illustrate multiple examples of the integrated electronic component 130. Figure 2 shows a structural diagram of an integrated electronic component 200. The integrated electronic component 200 includes a magnetic core 210, primary windings PR1 and PR2 connected in series, secondary windings SP and SN, and a leakage inductance post 212c. The magnetic core 210 includes magnetic posts 212a and 212b and plates 214 and 216, wherein the primary winding PR1 and the secondary winding SP are wound on the magnetic post 212a, and the primary winding PR2 and the secondary winding SN are wound on the magnetic post 212b. The magnetic posts 212a, 212b and the leakage inductance post 212c are arranged along a direction D2, with the leakage inductance post 212c located between the magnetic posts 212a and 212b, and the magnetic posts 212a, 212b and the leakage inductance post 212c located on the same magnetic flux path. Flat plates 214 and 216 are stacked along a direction D1, with directions D1 and D2 perpendicular to each other. Furthermore, the secondary winding SP is located above and below the primary winding PR1 (i.e., in direction D1). Similarly, the secondary winding SN is located above and below the primary winding PR2.

[0016] The secondary winding SP includes a top secondary sub-winding SP1 and a bottom secondary sub-winding SP2, with the top secondary sub-winding SP1 located between the primary winding PR1 and the plate 214, and the bottom secondary sub-winding SP2 located between the primary winding PR1 and the plate 216. Furthermore, the top secondary sub-winding SP1 and the bottom secondary sub-winding SP2 are connected in parallel through conductive vias 222, and a rectifier switch SRa1 is coupled to the top secondary sub-winding SP1, and a rectifier switch SRa2 is coupled to the bottom secondary sub-winding SP2. Similarly, the secondary winding SN includes a top secondary sub-winding SN1 and a bottom secondary sub-winding SN2, with the top secondary sub-winding SN1 located between the primary winding PR2 and the plate 214, and the bottom secondary sub-winding SN2 located between the primary winding PR2 and the plate 216. In addition, the top secondary side winding SN1 and the bottom secondary side winding SN2 are connected in parallel through the conductive via 224, and the rectifier switch SRb1 is coupled to the top secondary side winding SN1, and the rectifier switch SRb2 is coupled to the bottom secondary side winding SN2.

[0017] Because the conduction periods of rectifier switches SRa1, SRa2 and rectifier switches SRb1, SRb2 are different, the periods during which current flows through the secondary windings SP and SN are also different. Therefore, when the number of turns of the primary windings PR1 and PR2 is the same (that is, the primary magnetic flux generated on the magnetic posts 212a and 212b is the same), by controlling the number of turns of the secondary windings SP and SN, the integrated electronic component 200 can generate leakage inductance flux on the leakage inductance post 212c by allowing current to flow through different secondary windings at different times. Furthermore, referring to Figures 1 and 2, one wound magnetic post corresponds to a set of excitation inductors and a set of rectifier circuits. Therefore, the two magnetic posts 212a and 212b correspond to excitation inductors Lm1 and Lm2 and two sets of rectifier circuits with different half cycles (rectifier switches SRa1 and SRa2 are one set, and rectifier switches SRb1 and SRb2 are another set). The leakage inductance post 212c corresponds to the resonant inductance Lr. More specifically, in this embodiment, the leakage inductance of the integrated electronic component itself is used as the resonant inductance.

[0018] Figure 3 is a structural diagram of an integrated electronic component 300 according to an embodiment of the present invention. Similar to the integrated electronic component 200, the integrated electronic component 300 includes a magnetic core 210, primary windings PR1 and PR2 connected in series, and secondary windings SP and SN. The difference of the integrated electronic component 300 is that it further includes a leakage inductance post 212d and the position of the leakage inductance post 212c is different. Specifically, magnetic posts 212a and 212b are located between leakage inductance posts 212c and 212d, and magnetic posts 212a, 212b and leakage inductance posts 212c, 212d are arranged along direction D2 and located on the same magnetic flux path. Furthermore, similar to the integrated electronic component 200, the top secondary sub-winding SP1 and the bottom secondary sub-winding SP2 of the integrated electronic component 300 are coupled to rectifier switches SRa1 and SRa2 (not shown in Figure 3), respectively, and the top secondary sub-winding SN1 and the bottom secondary sub-winding SN2 are coupled to rectifier switches SRb1 and SRb2 (not shown in Figure 3), respectively.

[0019] The conduction periods of rectifier switches SRa1, SRa2 and rectifier switches SRb1, SRb2 are different. Therefore, when the number of turns of the primary windings PR1 and PR2 is the same, by controlling the number of turns of the secondary windings SP and SN, the integrated electronic component 300 can generate leakage inductance flux on leakage inductance posts 212c and 212d by allowing current to flow through different secondary windings at different times. In addition, referring to Figures 1 and 3, the two magnetic posts 212a and 212b correspond to the excitation inductors Lm1 and Lm2 and two sets of rectifier circuits with different half-cycles (rectifier switches SRa1 and SRa2 are one set, and rectifier switches SRb1 and SRb2 are another set), and the leakage inductance posts 212c and 212d correspond to the resonant inductor Lr.

[0020] By integrating electronic components 200 and 300, by winding secondary windings SP and SN of different half-cycles (e.g., positive half-cycle and negative half-cycle) onto different magnetic posts, and turning on rectifier switches SRa1, SRa2 and rectifier switches SRb1, SRb2 at different times, the leakage inductance value required by integrated electronic components 200 and 300 can be achieved without increasing the number of existing magnetic posts (i.e., using only the original magnetic posts 212a and 212b).

[0021] Figures 4A and 4B are schematic diagrams of the integrated electronic component 200 in Figure 2 from different angles. Referring to Figure 4A, for the sake of simplicity and clarity, rectifier switches SRa1, SRa2, SRb1, and SRb2 are not shown. Since the leakage inductance post 212c is located between the magnetic posts 212a and 212b, the integrated electronic component 200 has windows on both sides in direction D2 (i.e., the arrangement direction of the magnetic posts 212a, 212b, and the leakage inductance post 212c). Furthermore, in direction D3, which is perpendicular to directions D1 and D2, the integrated electronic component 200 also has windows W1 and W2, exposing the primary windings PR1 and PR2 and the secondary windings SP and SN. That is, the exposure direction of windows W1 and W2 is parallel to direction D3. Next, referring to Figure 4B, a schematic diagram of the integrated electronic component 200 viewed from direction D1 is shown. For ease of description, rectifier switches SRa1, SRa2, SRb1, SRb2 and plate 214 are not shown. As shown, the long axis of the cross-section of magnetic pillars 212a and 212b extends along direction D3, which is perpendicular to directions D1 and D2, and the long axis of leakage inductance pillar 212c also extends along direction D3.

[0022] Although Figure 4A only shows windows W1 and W2 on one side, as shown in Figure 4B, the integrated electronic component 200 has windows on both sides in direction D3. Therefore, airflow can pass through the integrated electronic component 200 from windows W1 and W2 on one side along direction D3 and exit from windows W1 and W2 on the other side, so that the magnetic pillars 212a, 212b and the leakage inductance pillar 212c can all come into contact with the airflow, thereby achieving higher heat dissipation efficiency.

[0023] Figures 5A and 5B are schematic diagrams of the integrated electronic component 300 in Figure 3 from different angles. Similar to Figures 4A and 4B, some components are not shown for the purpose of simplicity, clarity, and ease of explanation. Referring to Figure 5A, since the magnetic pillars 212a and 212b are located between the leakage inductance pillars 212c and 212d, the integrated electronic component 300 does not have windows on both sides in direction D2. In direction D3, the integrated electronic component 300 has a window W3. Next, referring to Figure 5B, a schematic diagram of the integrated electronic component 300 viewed from direction D1 is shown. In this diagram, the long axis of the cross-section of the magnetic pillars 212a and 212b extends along direction D3, which is perpendicular to directions D1 and D2, and the long axis of the leakage inductance pillars 212c and 212d also extends along direction D3.

[0024] Although Figure 5A only shows one side of the window W3, referring to Figure 5B, the integrated electronic component 300 has windows on both sides in direction D3. Therefore, airflow can pass through the integrated electronic component 300 from one side window W3 along direction D3 and exit from the other side window W3, so that the magnetic pillars 212a, 212b and the leakage inductance pillars 212c, 212d can all come into contact with the airflow, thereby achieving higher heat dissipation efficiency.

[0025] Figures 6A and 6B respectively show magnetoresistive models 600a and 600b, taking the integrated electronic component 200 as an example. Based on the structure of the integrated electronic component 200, the following equations can be derived: Φ1=IPR-ISEC─Equation (1) Φ2=IPR-ISEC─Equation (2) Φ3=IPR-ISEC─Equation (3) Wherein, Φ1 and Φ3 are the magnetic flux of the magnetic pillars 212a and 212b, respectively, while Φ2 is the leakage flux of the leakage inductance pillar 212c. w and x represent the number of turns in the primary windings PR1 and PR2, respectively, and y and z represent the number of turns in the secondary windings SP and SN, respectively. IPR represents the current flowing through the primary windings PR1 and PR2, ISEC represents the current flowing through the secondary windings SP and SN, RO is the magnetic reluctance of the magnetic pillars 212a and 212b, and RC is the magnetic reluctance of the leakage inductance pillar 212c. According to equation (2), it can be deduced that by controlling the number of turns w, x, y, and z (i.e., by distributing an appropriate number of winding turns on the magnetic pillars 212a and 212b), the leakage inductance flux Φ2 of the integrated electronic component 200 can be controlled.

[0026] Referring to Figure 6A, the reluctance model 600a during the positive half-cycle is shown. Since rectifier switches SRb1 and SRb2 are not conducting during the positive half-cycle, no current flows through the secondary winding SN on the magnetic column 212b (as shown by the crossed-out part in Figure 6A). At this time, equation (2) can be rewritten as follows: Φ2=IPR+ISEC─Equation (4)

[0027] Referring to Figure 6B, the reluctance model 600b during the negative half-cycle is shown. Since rectifier switches SRa1 and SRa2 are not conducting during the negative half-cycle, no current flows through the secondary winding SP on the magnetic column 212a (as shown by the crossed-out part in Figure 6B). At this time, equation (2) can be rewritten as follows: Φ2=IPR-ISEC─Equation (5)

[0028] Comparing equations (4) and (5), if the leakage inductance flux Φ2 of the positive half-cycle and the negative half-cycle are to be equal, then w=x and y=z. That is, when the number of turns of the primary winding PR1 is the same as the number of turns of the primary winding PR2, and the number of turns of the secondary winding SP is the same as the number of turns of the secondary winding SN, the leakage inductance value of the integrated electronic component 200 is the same in the positive half-cycle and the negative half-cycle. In addition, by controlling the cross-sectional area of ​​the magnetic pillars 212a, 212b and the leakage inductance pillar 212c (and the leakage inductance pillar 212d), the size of the leakage inductance value can also be affected, thereby achieving the integration of the resonant inductor Lr and the magnetizing inductor Lm to reduce the volume of the resonant converter circuit 100.

[0029] This invention provides a resonant converter circuit, including a power supply, a primary-side circuit, an integrated electronic component, and a secondary-side circuit. The primary-side circuit is coupled between the power supply and the integrated electronic component, and the integrated electronic component is coupled between the primary-side circuit and the secondary-side circuit. The primary-side circuit includes a half-bridge switch and a resonant circuit. The half-bridge switch includes switches S1 and S2 connected in series. The resonant circuit includes a resonant capacitor Cr, magnetizing inductors Lm1 and Lm2, and a resonant inductor Lr connected in series. The secondary-side circuit includes a rectifier circuit and an output load circuit. The rectifier circuit includes rectifier switches SRa1, SRa2, SRb1, and SRb2. The output load circuit includes a load resistor RL and a load capacitor CL.

[0030] The integrated electronic component provided by the present invention includes a magnetic core, a primary winding, and a secondary winding. The magnetic core includes magnetic posts 212a and 212b. The primary winding is wound with the same number of turns on magnetic posts 212a and 212b, respectively. The secondary winding is also wound with the same number of turns on magnetic posts 212a and 212b, respectively. Rectifier switches SRa1 and SRa2 are coupled to the secondary winding of magnetic post 212a, and rectifier switches SRb1 and SRb2 are coupled to the secondary winding of magnetic post 212b. In this way, by utilizing the characteristics of rectifier switches SRa1, SRa2 and rectifier switches SRb1, SRb2 conducting in different half-cycles, the integrated electronic component can achieve the required leakage inductance value by controlling the timing of switch activation and the number of turns in the winding without requiring additional magnetic posts (i.e., posts for winding the winding). Furthermore, through the arrangement of the magnetic pillars and leakage inductance pillars of the integrated electronic components 200 and 300 as shown in Figures 4A and 5A, airflow can be passed through the windows W1, W2 or W3 on both sides to achieve the effect of heat dissipation for each magnetic pillar and leakage inductance pillar. [Simplified Explanation of the Diagram]

[0011] Figure 1 is a circuit diagram of a resonant converter circuit according to an embodiment of the present invention. Figure 2 is a structural diagram of an integrated electronic component according to an embodiment of the present invention. Figure 3 is a structural diagram of an integrated electronic component according to an embodiment of the present invention. Figures 4A and 4B are schematic diagrams of the integrated electronic component of Figure 2 at different angles. Figures 5A and 5B are schematic diagrams of the integrated electronic component of Figure 3 at different angles. Figure 6A is a magnetoresistive model of an integrated electronic component according to an embodiment of the present invention during a positive half-cycle. Figure 6B is a magnetoresistive model of an integrated electronic component according to an embodiment of the present invention during a negative half-cycle.

Claims

1. An integrated electronic component for a converter, comprising: A magnetic core having a first post and a second post spaced apart, wherein the first post and the second post are located on a magnetic flux path; A first primary winding is wound on the first post; a second primary winding is wound on the second post; a first secondary winding is wound on the first post; and a second secondary winding is wound on the second post, wherein the first secondary winding and the second secondary winding are respectively coupled to at least one first rectifier switch and at least one second rectifier switch, wherein the at least one first rectifier switch and the at least one second rectifier switch have different conduction periods; and wherein the first secondary winding and the second secondary winding are configured as secondary windings with different half-cycles.

2. The integrated electronic component as described in claim 1, further comprising: A third column is located on this magnetic flux path; And a first plate and a second plate, wherein the first post and the second post are located between the first plate and the second plate, and a first direction in which the first plate and the second plate are stacked is perpendicular to a second direction in which the first post and the second post are arranged.

3. The integrated electronic component as claimed in claim 2, wherein the third post is located between the first post and the second post, and the first post, the second post and the third post are arranged along the second direction.

4. The integrated electronic component as claimed in claim 2 further includes a fourth post, wherein the first post and the second post are located between the third post and the fourth post, and the first post, the second post, the third post and the fourth post are arranged along the second direction.

5. The integrated electronic component as described in claim 2, wherein: The long axis of the third column extends along a third direction, and the third direction is perpendicular to the first direction and the second direction; and the integrated electronic component further includes at least one window, the exposure direction of the at least one window being parallel to the third direction, and exposing the first primary winding, the second primary winding, the first secondary winding and the second secondary winding.

6. The integrated electronic component as claimed in claim 2, wherein the long axis of the first post and the long axis of the second post extend along a third direction, and the third direction is perpendicular to the first direction and the second direction.

7. The integrated electronic assembly as claimed in claim 2, wherein the first secondary side winding includes two first secondary side sub-windings and the second secondary side winding includes two second secondary side sub-windings.

8. The integrated electronic component as claimed in claim 7, wherein the first secondary side sub-windings are respectively disposed on both sides of the first primary side winding, and the second secondary side sub-windings are respectively disposed on both sides of the second primary side winding.

9. The integrated electronic component as described in claim 7, wherein: The first and second secondary side windings include a top first and second secondary side winding and a bottom first and second secondary side winding, wherein the top first and second secondary side winding is located between the first primary side winding and the first plate, and the bottom first and second secondary side winding is located between the first primary side winding and the second plate; and the second secondary side windings include a top second and second secondary side winding and a bottom second and second secondary side winding, wherein the top second and second secondary side winding is located between the second primary side winding and the first plate, and the bottom second and second secondary side winding is located between the second primary side winding and the second plate.

10. The integrated electronic component as claimed in claim 7, wherein the first and second secondary sub-windings are connected and coupled to an output load circuit through a plurality of first conductive vias, and the second and second secondary sub-windings are connected and coupled to the output load circuit through a plurality of second conductive vias.

11. The integrated electronic component as described in claim 7 further includes a rectifier circuit, wherein: The rectifier circuit includes two first rectifier switches and two second rectifier switches; one of the first rectifier switches is coupled to one of the first secondary sub-windings; the other of the first rectifier switches is coupled to the other of the first secondary sub-windings; one of the second rectifier switches is coupled to one of the second secondary sub-windings; and the other of the second rectifier switches is coupled to the other of the second secondary sub-windings.

12. The integrated electronic component as claimed in claim 11 further includes a resonant circuit, wherein the resonant circuit includes a resonant capacitor, a magnetizing inductor and a resonant inductor connected in series.

13. The integrated electronic component as described in claim 12 further includes: A switching circuit having a first switch and a second switch connected in series, wherein the first switch and the second switch are connected in series through a first node, and the resonant circuit is coupled between the first node and a ground terminal; and an output load circuit coupled to the rectifier circuit and configured to output an output current from the rectifier circuit.

14. The integrated electronic component as described in claim 13, wherein: During a positive half-cycle, the first rectifier switch and the first switch are turned on, and the second switch and the second rectifier switch are turned off; and during a negative half-cycle, the first switch and the first rectifier switch are turned off, and the second switch and the second rectifier switch are turned on.

15. The integrated electronic component as claimed in claim 1 further includes a resonant circuit, wherein the resonant circuit includes a resonant capacitor, a magnetizing inductor and a resonant inductor connected in series, the magnetizing inductor including the first post and the second post, the resonant inductor including the third post, and the first post, the second post and the third post being located on the magnetic flux path.

16. The integrated electronic assembly as claimed in claim 1, wherein the first primary winding and the second primary winding are connected in series with each other.

17. The integrated electronic assembly as claimed in claim 1, wherein the first primary winding and the second primary winding have the same number of turns.

18. A resonant converter circuit, comprising: A power supply; an integrated electronic component as described in claim 1 above; A primary-side circuit is coupled between the power supply and the integrated electronic component; And primary and secondary side circuitry, coupled between the integrated electronic component and a ground terminal.

19. The resonant converter circuit as described in claim 18, wherein: The integrated electronic component further includes a resonant circuit coupled between a first node and the ground terminal, and having a resonant capacitor, a magnetizing inductor and a resonant inductor connected in series; the primary side circuit includes a half-bridge switch, including a first switch and a second switch, wherein the first switch is coupled between the power supply and the first node, and the second switch is coupled between the first node and the ground terminal; The secondary side circuit includes: a rectifier circuit coupled to the first secondary side winding and the second secondary side winding, and having the first rectifier switch and the second rectifier switch; And an output load circuit configured to output an output current; in a positive half-cycle, the first switch and the first rectifier switches are turned on, and the second switch and the second rectifier switches are turned off; and in a negative half-cycle, the first switch and the first rectifier switches are turned off, and the second switch and the second rectifier switches are turned on.

20. The resonant converter circuit as claimed in claim 19, wherein the magnetizing inductor includes the first post and the second post, the resonant inductor includes a third post, and the first post, the second post, and the third post are located on the flux path.

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