Boost circuit capable of simply rectifying conducted radiation

Abstract

The utility model discloses a simple boosted circuit capable of rectifying conduction radiation, which comprises an input filtering module, a rectification filtering module, a chip power supply module and a chip and transformer boosting module which are connected in sequence, and a rectification conduction module is connected between the rectification filtering module and the chip and transformer boosting module. The chip and transformer boosting module is connected with a rectification radiation module, the positive electrode of the polar capacitor EC2 and the positive electrode of the polar capacitor EC3 are connected with an output positive electrode HV, one end of the capacitor C2 is grounded, and the other end of the capacitor C2 is connected with the positive electrode of the polar capacitor EC2 and the positive electrode of the polar capacitor EC3 through the capacitor C3. According to the utility model, the capacitor C3 is simply bridged to rectify conduction, a chip capacitor with lower cost can be used, and a plug-in or a chip magnetic bead B1 is simply connected in series in front of the diode D6 and the positive poles of the polar capacitors EC2 and EC3 after boosting and rectification of the circuit to rectify radiation, so that the efficiency is not influenced, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of circuits, in particular to a boost circuit for simply rectifying conducted radiation. Background Art

[0002] In the process of powering the lamp, it is usually necessary to rectify the conduction and radiation to achieve a stable lighting effect. The conventional method of rectifying conduction is to add an X capacitor or an I-shaped inductor to rectify the conduction, but the cost is relatively high, or to connect a chip capacitor to the ground at the D pin of the boost MOS tube Q1 to rectify the conduction, but the efficiency is reduced and the temperature of the MOS tube will increase. The conventional method of rectifying radiation is to add a common mode or inductor to rectify the radiation, but the circuit is complex and the cost is relatively high, or to connect a chip capacitor to the ground at the D pin of the boost MOS tube Q1 to rectify the radiation, but the efficiency is reduced and the temperature of the MOS tube will increase. Therefore, in order to avoid the shortcomings of the prior art, it is necessary to improve the prior art. Utility Model Content

[0003] The utility model aims to overcome the shortcomings and deficiencies in the prior art and provide a simple boost circuit for rectifying conducted radiation.

[0004] The utility model is realized by the following technical solutions:

[0005] A simple boost circuit for rectifying conduction and radiation, comprising an input filter module, a rectifier filter module, a chip power supply module and a chip and transformer boost module connected in sequence, a rectification conduction module connected between the rectifier filter module and the chip and transformer boost module, a rectification radiation module connected to the chip and transformer boost module, the rectifier filter module comprising a capacitor C1 and a capacitor C2, the chip and transformer boost module comprising a chip U1, a polarity capacitor EC2 and a polarity capacitor EC3, the rectification conduction module comprising a capacitor C3 and a diode D5, the rectification radiation module comprising a magnetic Bead B1, the positive electrode of the polarity capacitor EC2 and the positive electrode of the polarity capacitor EC3 are connected to the output positive electrode HV, one end of the capacitor C2 is grounded, the other end of the capacitor C2 is connected to the positive electrode of the polarity capacitor EC2 and the positive electrode of the polarity capacitor EC3 through the capacitor C3, the other end of the capacitor C2 is connected to the positive electrode of the polarity capacitor EC2 and the positive electrode of the polarity capacitor EC3, the negative electrode of the diode D5 is connected to the positive electrode of the polarity capacitor EC2 and the positive electrode of the polarity capacitor EC3, the positive electrode of the polarity capacitor EC2 and the positive electrode of the polarity capacitor EC3 are connected to the magnetic bead B1.

[0006] Furthermore, the input filter module includes a safety capacitor CX1, an inductor LF1, a safety capacitor CX2, a resistor RX1, a resistor RX2 and an inductor LF2 in sequence, the two ends of the safety capacitor CX1 are respectively connected to the input positive electrode and the input negative electrode of the inductor LF1, the two ends of the safety capacitor CX2 are respectively connected to the output positive electrode and the output negative electrode of the inductor LF1, the resistor RX1 is connected in series with the resistor RX2 and then connected in parallel with the safety capacitor CX2, and the two ends of the safety capacitor CX2 are respectively connected to the input positive electrode and the input negative electrode of the inductor LF2.

[0007] Furthermore, the rectification and filtering module also includes a rectifier bridge BD1, a resistor R1 and an inductor L1. The output negative electrode of the rectifier bridge BD1 is grounded through the capacitor C1, the output positive electrode of the rectifier bridge BD1 is connected to the capacitor C3 through the inductor L1, the inductor L1 is connected in parallel with the resistor R1, and the output positive electrode of the rectifier bridge BD1 is grounded through the inductor L1 and the capacitor C2.

[0008] Furthermore, the chip and transformer boost module also includes 2-8 main windings of the transformer group T1, MOS tube Q1 and diode D6.

[0009] Furthermore, the chip power supply module includes 4-6 secondary windings of the transformer group T1, capacitor C4, resistor R4, resistor R5, transistor Q2, diode D7, diode D8, capacitor C5, capacitor C11 and polarity capacitor EC1.

[0010] Furthermore, the D end of the MOS tube Q1 is connected to the anode of the diode D6, the cathode of the diode D6 is connected to the FB pin of the chip U1 through the magnetic bead B1, the resistor R12, the resistor R13 and the resistor R14, the FB pin of the chip U1 is grounded through the resistor R15, and the G end of the MOS tube Q1 is connected to the GATE pin of the chip U1 through the resistor R8 and the resistor R9.

[0011] Further, the positive electrode of the polar capacitor EC2 is connected to the positive electrode of the polar capacitor EC3, and the negative electrode of the polar capacitor EC2 is connected to the negative electrode of the polar capacitor EC3.

[0012] Furthermore, the VCC pin of the chip U1 is connected to the output positive electrode of the rectifier bridge BD1 through the resistor R3, the resistor R2 and the inductor L1.

[0013] Furthermore, the S end of the MOS tube Q1 is connected to the CS pin of the chip U1 through the resistor R11, the G end of the MOS tube Q1 is connected to the CS pin of the chip U1 through the resistors R10 and R11, the G end of the MOS tube Q1 is connected to the CS pin of the chip U1 through the resistor R10, the resistor RS1 and the capacitor C7, the resistor RS1 is connected in parallel with the resistor RS3, and the CS pin of the chip U1 is grounded through the capacitor C7.

[0014] Furthermore, the model of the chip U1 is BP2628.

[0015] Compared with the prior art, the utility model simply connects a capacitor C3 between the positive electrode of the capacitor C2 before the boost and the positive electrode of the polar capacitor EC2 after the boost to rectify the conduction, uses low-cost chip capacitors, does not affect the efficiency, has low cost, and has a simple circuit. A plug-in or chip bead B1 is simply connected in series between the diode D6 after the circuit boost rectification and the positive electrode of the polar capacitor EC2 to rectify the radiation, which does not affect the efficiency, has low cost, has a simple circuit, does not affect the normal operation of the MOS tube Q1, and has a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The utility model is a circuit schematic diagram of a boost circuit for simply rectifying conducted radiation.

[0018] In the figure: A-input filter module; B-rectifier filter module; C-chip power supply module; D-chip and transformer boost module; E-rectifier conduction module; F-rectifier radiation module. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1The utility model is a simple conduction and radiation rectification boost circuit, comprising an input filter module A, a rectifier filter module B, a chip power supply module C and a chip and transformer boost module D connected in sequence, a rectification conduction module E is connected between the rectifier filter module B and the chip and transformer boost module D, the chip and transformer boost module D is connected to a rectification radiation module F, the rectifier filter module B includes capacitors C1 and C2, the chip and transformer boost module C includes a chip U1, polarity capacitors EC2 and EC3, the rectification conduction module E includes capacitors C1 and C2, the chip and transformer boost module C includes a chip U1, polarity capacitors EC2 and EC3, and the rectification conduction module E includes capacitors C1 and C2. Capacitor C3 and diode D5, the radiation rectification module F includes a magnetic bead B1, the positive pole of the polarity capacitor EC2 is connected to the output positive pole HV, one end of the capacitor C2 is grounded, the other end of the capacitor C2 is connected to the positive pole of the polarity capacitor EC2 and the positive pole of the polarity capacitor EC3 through the capacitor C3, the other end of the capacitor C2 is connected to the positive pole of the polarity capacitor EC2 and the positive pole of the polarity capacitor EC3, the negative pole of the diode D5 is connected to the positive pole of the polarity capacitor EC2 and the positive pole of the polarity capacitor EC3, and the positive pole of the polarity capacitor EC2 and the positive pole of the polarity capacitor EC3 are connected to the magnetic bead B1. By simply connecting a capacitor C3 between the positive electrode of the capacitor C2 before the boost and the positive electrode of the polar capacitor EC2 after the boost to rectify the conduction, using low-cost chip capacitors, it does not affect the efficiency, the cost is low, and the circuit is simple. A plug-in or chip bead B1 is simply connected in series between the diode D6 after the circuit boost rectification and the positive electrode of the polar capacitor EC2 to rectify the radiation, which does not affect the efficiency, the cost is low, the circuit is simple, and does not affect the normal operation of the MOS tube Q1, and the use effect is good

[0021] The input filter module A includes a safety capacitor CX1, an inductor LF1, a safety capacitor CX2, a resistor RX1, a resistor RX2 and an inductor LF2 in sequence. The two ends of the safety capacitor CX1 are respectively connected to the input positive electrode and the input negative electrode of the inductor LF1, and the two ends of the safety capacitor CX2 are respectively connected to the output positive electrode and the output negative electrode of the inductor LF1. The resistor RX1 and the resistor RX2 are connected in series and then connected in parallel with the safety capacitor CX2. The two ends of the safety capacitor CX2 are respectively connected to the input positive electrode and the input negative electrode of the inductor LF2 to filter the high-voltage AC input.

[0022] The rectifier and filter module B also includes a rectifier bridge BD1, a resistor R1 and an inductor L1. The output negative electrode of the rectifier bridge BD1 is grounded through the capacitor C1, and the output positive electrode of the rectifier bridge BD1 is connected to the capacitor C3 through the inductor L1. The inductor L1 and the resistor R1 are connected in parallel. The output positive electrode of the rectifier bridge BD1 is grounded through the inductor L1 and the capacitor C2 to rectify and filter the high-voltage alternating current.

[0023] The chip and transformer boost module D also includes the 2-8 main windings of the transformer group T1, the MOS tube Q1 and the diode D6, which boost and convert the rectified electricity to supply the rear electrode or the corresponding load.

[0024] The chip power supply module C includes the 4-6 secondary windings of the transformer group T1, the capacitor C4, the resistor R4, the resistor R5, the transistor Q2, the diode D7, the diode D8, the capacitor C5, the capacitor C11 and the polarity capacitor EC1. The power is supplied to the VCC pin of the chip U1 through the capacitor C4, the resistor R4, the resistor R5, the diode D8 and the transistor Q2. The diode D7 is used for freewheeling to strengthen the power supply. The capacitor C5, the capacitor C11 and the polarity capacitor EC1 are used for filtering.

[0025] The D end of the MOS tube Q1 is connected to the positive electrode of the diode D6, and the negative electrode of the diode D6 is connected to the FB pin of the chip U1 through the magnetic bead B1, the resistor R12, the resistor R13 and the resistor R14. The FB pin of the chip U1 is grounded through the resistor R15, and the G end of the MOS tube Q1 is connected to the GATE pin of the chip U1 through the resistor R8 and the resistor R9. The resistor R12, the resistor R13, the resistor R14 and the resistor R15 are used to divide the voltage and feed it back to the FB pin of the chip U1 to adjust the boost voltage. At the same time, the GATE pin of the chip U1 is used to adjust the duty cycle of the MOS tube Q1 through the resistor R8 and the resistor R9, so as to achieve the desired boost voltage.

[0026] The positive electrode of polar capacitor EC2 is connected to the positive electrode of polar capacitor EC3, and the negative electrode of polar capacitor EC2 is connected to the negative electrode of polar capacitor EC3. When starting, polar capacitor EC2 and polar capacitor EC3 are quickly charged and started through diode D5.

[0027] The VCC pin of chip U1 is connected to the output positive pole of rectifier bridge BD1 through resistor R3, resistor R2 and inductor L1. The rectifier and filter module quickly supplies power to chip U1 for startup. The 4-6 secondary windings of transformer group T1 provide continuous and low-power power supply through capacitor C4, resistor R5, diode D8, MOS tube Q2, capacitor C11 and other components to improve work efficiency.

[0028] The S end of the MOS tube Q1 is connected to the CS pin of the chip U1 through the resistor R11, the G end of the MOS tube Q1 is connected to the CS pin of the chip U1 through the resistors R10 and R11, the G end of the MOS tube Q1 is connected to the CS pin of the chip U1 through the resistor R10, the resistor RS1 and the capacitor C7, the resistor RS1 is connected in parallel with the resistor RS3, the CS pin of the chip U1 is grounded through the capacitor C7, the current is detected in time, and the working accuracy and stability of the MOS tube Q1 are improved.

[0029] As a specific implementation, the model of chip U1 is BP2628.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A simple boost circuit for rectifying conducted radiation, characterized in that: The invention comprises an input filter module, a rectifier filter module, a chip power supply module and a chip and transformer boost module connected in sequence, a rectification conduction module is connected between the rectifier filter module and the chip and transformer boost module, a rectification radiation module is connected to the chip and transformer boost module, the rectifier filter module comprises a capacitor C1 and a capacitor C2, the chip and transformer boost module comprises a chip U1, a polarity capacitor EC2 and a polarity capacitor EC3, the rectification conduction module comprises a capacitor C3 and a diode D5, the rectification radiation module comprises a magnetic bead B1, the polarity The positive electrode of capacitor EC2 and the positive electrode of polarity capacitor EC3 are connected to the output positive electrode HV, one end of the capacitor C2 is grounded, the other end of the capacitor C2 is connected to the positive electrode of the polarity capacitor EC2 and the positive electrode of the polarity capacitor EC3 through the capacitor C3, the other end of the capacitor C2 is connected to the positive electrode of the polarity capacitor EC2 and the positive electrode of the polarity capacitor EC3, the negative electrode of the diode D5 is connected to the positive electrode of the polarity capacitor EC2 and the positive electrode of the polarity capacitor EC3, and the positive electrodes of the polarity capacitor EC2 and the polarity capacitor EC3 are connected to the magnetic bead B1.

2. The simple boost circuit for rectifying conducted radiation according to claim 1, characterized in that: The input filter module includes a safety capacitor CX1, an inductor LF1, a safety capacitor CX2, a resistor RX1, a resistor RX2 and an inductor LF2 in sequence. The two ends of the safety capacitor CX1 are respectively connected to the input positive electrode and the input negative electrode of the inductor LF1, and the two ends of the safety capacitor CX2 are respectively connected to the output positive electrode and the output negative electrode of the inductor LF1. The resistor RX1 is connected in series with the resistor RX2 and then connected in parallel with the safety capacitor CX2. The two ends of the safety capacitor CX2 are respectively connected to the input positive electrode and the input negative electrode of the inductor LF2.

3. The simple boost circuit for rectifying conducted radiation according to claim 1, characterized in that: The rectification and filtering module also includes a rectifier bridge BD1, a resistor R1 and an inductor L1. The output negative electrode of the rectifier bridge BD1 is grounded through the capacitor C1, the output positive electrode of the rectifier bridge BD1 is connected to the capacitor C3 through the inductor L1, the inductor L1 is connected in parallel with the resistor R1, and the output positive electrode of the rectifier bridge BD1 is grounded through the inductor L1 and the capacitor C2.

4. The simple conduction radiation rectification boost circuit according to claim 1, characterized in that: The chip and transformer boost module also includes 2-8 main windings of the transformer group T1, MOS tube Q1 and diode D6.

5. The simple boost circuit for rectifying conducted radiation according to claim 1, characterized in that: The chip power supply module includes 4-6 secondary windings of the transformer group T1, capacitor C4, resistor R4, resistor R5, transistor Q2, diode D7, diode D8, capacitor C5, capacitor C11 and polarity capacitor EC1.

6. The simple boost circuit for rectifying conducted radiation according to claim 4, characterized in that: The D end of the MOS tube Q1 is connected to the anode of the diode D6, the cathode of the diode D6 is connected to the FB pin of the chip U1 through the magnetic bead B1, the resistor R12, the resistor R13 and the resistor R14, the FB pin of the chip U1 is grounded through the resistor R15, and the G end of the MOS tube Q1 is connected to the GATE pin of the chip U1 through the resistor R8 and the resistor R9.

7. The simple boost circuit for rectifying conducted radiation according to claim 1, characterized in that: The positive electrode of the polar capacitor EC2 is connected to the positive electrode of the polar capacitor EC3, and the negative electrode of the polar capacitor EC2 is connected to the negative electrode of the polar capacitor EC3.

8. The simple boost circuit for rectifying conducted radiation according to claim 3, characterized in that: The VCC pin of the chip U1 is connected to the positive output electrode of the rectifier bridge BD1 through the resistor R3, the resistor R2 and the inductor L1.

9. The simple boost circuit for rectifying conducted radiation according to claim 4, characterized in that: The S end of the MOS tube Q1 is connected to the CS pin of the chip U1 through the resistor R11, the G end of the MOS tube Q1 is connected to the CS pin of the chip U1 through the resistors R10 and R11, the G end of the MOS tube Q1 is connected to the CS pin of the chip U1 through the resistor R10, the resistor RS1 and the capacitor C7, the resistor RS1 is connected in parallel with the resistor RS3, and the CS pin of the chip U1 is grounded through the capacitor C7.

10. The simple boost circuit for rectifying conducted radiation according to claim 1, characterized in that: The model of the chip U1 is BP2628.

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