A low latency power adapter

Abstract

This utility model discloses a low-latency power adapter, relating to the field of power adapter technology. Its main technical solution includes: the input terminal of a switching power supply module is connected to the output terminal of a rectifier module; the input terminal of a filter module is connected to the output terminal of the rectifier module; the input terminal of a transformer module is connected to the output terminal of the filter module, and the transformer module is also connected to the switching power supply module; wherein, the output terminal of the transformer module is used to output the target voltage. On the one hand, this aims to enable the power adapter to respond to load changes in a short time and provide a stable output voltage, suitable for latency-sensitive applications. On the other hand, by employing efficient switching power supply technology and optimized filtering circuits, it aims to reduce energy loss and improve power conversion efficiency. Furthermore, through a feedback control mechanism, voltage fluctuations can be effectively suppressed, aiming to ensure the stability and reliability of the output voltage.

Description

Technical Field

[0001] This utility model relates to the field of power adapter technology, and specifically to a low-latency power adapter. Background Technology

[0002] A power adapter is a power conversion device for small portable electronic devices and appliances. It typically consists of a casing, transformer, inductor, capacitor, control IC, PCB board, and other components. Its working principle is to convert AC input to DC output. Based on the connection method, it can be divided into wall-mounted and desktop types. It is widely used in security cameras, set-top boxes, routers, LED strips, massagers, and other devices.

[0003] Existing power adapters provide stable DC output through step-down transformers, rectification, filtering, and voltage regulation. However, the adjustment time is relatively long when the load changes rapidly, making it difficult to meet the fast response requirements of modern electronic devices. Utility Model Content

[0004] The purpose of this invention is to provide a low-latency power adapter, which solves the problem that existing power adapters have long adjustment times when the load changes rapidly, making it difficult to meet the fast response requirements of modern electronic devices.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A low-latency power adapter includes a rectifier module, a switching power supply module, a filter module, and a transformer module. The rectifier module is used to connect to an input power supply. The input terminal of the switching power supply module is connected to the output terminal of the rectifier module. The input terminal of the filter module is connected to the output terminal of the rectifier module. The input terminal of the transformer module is connected to the output terminal of the filter module, and the transformer module is also connected to the switching power supply module. The output terminal of the transformer module is used to output a target voltage.

[0007] A further technical solution is as follows: the rectifier module includes a rectifier BD1 and a fuse F1; one end of the fuse F1 is used to connect to the L terminal of the input power supply; pin 3 of the rectifier BD1 is connected to the other end of the fuse F1; pin 4 of the rectifier BD1 is grounded; pin 1 of the rectifier BD1 is used to connect to the N terminal of the input power supply; pin 2 of the rectifier BD1 is connected to both the input terminal of the switching power supply module and the input terminal of the filter module.

[0008] A further technical solution is as follows: the filtering module includes inductor L1, inductor L2, electrolytic capacitor CE1, and electrolytic capacitor CE2; one end of inductor L1 and the positive terminal of electrolytic capacitor CE1 are both connected to pin 2 of rectifier BD1; the negative terminal of electrolytic capacitor CE1 and one end of inductor L2 are both grounded; the other end of inductor L1 is connected to the positive terminal of electrolytic capacitor CE2 and the input terminal of transformer module; the negative terminal of electrolytic capacitor CE2 and the other end of inductor L2 are both grounded.

[0009] A further technical solution is as follows: The switching power supply module includes a switching power supply chip U1, resistors R1, R11, R12, R4, electrolytic capacitor CE3, diode D3, capacitor C4, resistors R5, R6, R7, and R8; the switching power supply chip U1 is OBGZ53_SOP-7; one end of resistor R1 is connected to pin 2 of rectifier BD1; one end of resistor R11 is connected to the other end of resistor R1; the other end of resistor R11 is connected to one end of resistor R4, the positive terminal of electrolytic capacitor CE3, and one end of resistor R12; the negative terminal of electrolytic capacitor CE3 and one end of capacitor C4 are both grounded; the other end of resistor R4 and the other end of capacitor C4 are connected to pin 1 of the switching power supply chip U1. The circuit is as follows: The resistor R12 is connected to the negative terminal of the diode D3; the diode D3 is connected to one end of the resistor R5 and the transformer module; the other end of the resistor R5 is connected to pin 2 of the switching power supply chip U1, one end of the resistor R6, one end of the resistor R3, and one end of the capacitor C5; the other end of the resistor R6 is connected to the transformer module, the other end of the resistor R3, the other end of the capacitor C5, one end of the resistor R7, and one end of the resistor R8, and the other end of the resistor R6 is grounded; the other ends of the resistors R7 and R8 are both connected to pin 4 of the switching power supply chip U1; pin 8 of the switching power supply chip U1 is grounded; pins 5 and 6 of the switching power supply chip U1 are both connected to the transformer module.

[0010] A further technical solution is as follows: The transformer module includes a transformer T1, a capacitor C1, a resistor R9, a resistor R2, a diode D2, a capacitor C2, a diode D1, a capacitor C3, a resistor R10, an electrolytic capacitor CE4, a resistor R13, and an electrolytic capacitor CE5; the transformer T1 includes a first transformer section T1A and a second transformer section T1B; one end of capacitor C1, one end of resistor R9, one end of capacitor C2, and pin 7 of the first transformer section T1A are all connected to the other end of inductor L1; the other end of resistor R9 and the other end of capacitor C1 are all connected to one end of resistor R2; the other end of resistor R2 is connected to the negative terminal of diode D2; the positive terminal of diode D2 is connected to pin 5 and pin 6 of the switching power supply chip U1, pin 6 of the first transformer section T1A, and the... The other end of capacitor C2 is connected to the first transformer section T1A; pin 5 of the first transformer section T1A is connected to the positive terminal of diode D1 and one end of capacitor C3; the other end of capacitor C3 is connected to one end of resistor R10; the negative terminal of diode D1 is connected to the other end of resistor R10, the positive terminal of electrolytic capacitor CE4, one end of resistor R13, and the positive terminal of electrolytic capacitor CE5, and the negative terminal of diode D1 is used as the positive terminal of the output target voltage; pin 4 of the first transformer section T1A, the negative terminal of electrolytic capacitor CE4, the other end of resistor R13, and the negative terminal of electrolytic capacitor CE5 are all grounded, and the first transformer section T1A is used as the negative terminal of the output target voltage; pin 3 of the second transformer section T1B is connected to the positive terminal of diode D3; pin 1 of the second transformer section T1B is connected to the other end of resistor R6.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] On the one hand, the goal is to enable the power adapter to respond quickly to load changes and provide a stable output voltage, making it suitable for latency-sensitive applications. On the other hand, it employs efficient switching power supply technology and optimized filtering circuits to reduce energy loss and improve power conversion efficiency. Furthermore, a feedback control mechanism effectively suppresses voltage fluctuations, aiming to ensure output voltage stability and reliability. Attached Figure Description

[0013] Figure 1 This is an electrical block diagram of a low-latency power adapter in this embodiment;

[0014] Figure 2 This is a circuit topology diagram of a low-latency power adapter in this embodiment.

[0015] The attached diagram shows the markings and corresponding component names:

[0016] 100 - Rectifier module; 200 - Switching power supply module; 300 - Filter module; 400 - Transformer module. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Example 1: This example provides a low-latency power adapter, including a rectifier module 100, a switching power supply module 200, a filter module 300, and a transformer module 400. The rectifier module 100 is used to connect to the input power supply; the input terminal of the switching power supply module 200 is connected to the output terminal of the rectifier module 100; the input terminal of the filter module 300 is connected to the output terminal of the rectifier module 100; the input terminal of the transformer module 400 is connected to the output terminal of the filter module 300, and the transformer module 400 is connected to the switching power supply module 200; wherein, the output terminal of the transformer module 400 is used to output the target voltage.

[0019] In this embodiment, the rectifier module 100 includes a rectifier BD1 and a fuse F1; one end of the fuse F1 is connected to the L terminal of the input power supply; pin 3 of the rectifier BD1 is connected to the other end of the fuse F1; pin 4 of the rectifier BD1 is grounded; pin 1 of the rectifier BD1 is connected to the N terminal of the input power supply; pin 2 of the rectifier BD1 is connected to both the input terminal of the switching power supply module 200 and the input terminal of the filter module 300.

[0020] In this embodiment, the filter module 300 includes inductor L1, inductor L2, electrolytic capacitor CE1, and electrolytic capacitor CE2; one end of inductor L1 and the positive terminal of electrolytic capacitor CE1 are connected to pin 2 of rectifier BD1; the negative terminal of electrolytic capacitor CE1 and one end of inductor L2 are grounded; the other end of inductor L1 is connected to the positive terminal of electrolytic capacitor CE2 and the input terminal of transformer module 400; the negative terminal of electrolytic capacitor CE2 and the other end of inductor L2 are grounded.

[0021] In this embodiment, the switching power supply module 200 includes a switching power supply chip U1, resistors R1, R11, R12, R4, an electrolytic capacitor CE3, a diode D3, a capacitor C4, resistors R5, R6, R7, and R8; the switching power supply chip U1 is an OBGZ53_SOP-7; one end of resistor R1 is connected to pin 2 of the rectifier BD1; one end of resistor R11 is connected to the other end of resistor R1; the other end of resistor R11 is connected to one end of resistor R4, the positive terminal of electrolytic capacitor CE3, and one end of resistor R12; the negative terminal of electrolytic capacitor CE3 and one end of capacitor C4 are both grounded; the other end of resistor R4 and the other end of capacitor C4 are connected to pin 1 of the switching power supply chip U1. The other end of resistor R12 is connected to the negative terminal of diode D3; the positive terminal of diode D3 is connected to one end of resistor R5 and transformer module 400; the other end of resistor R5 is connected to pin 2 of switching power supply chip U1, one end of resistor R6, one end of resistor R3, and one end of capacitor C5; the other end of resistor R6 is connected to transformer module 400, the other end of resistor R3, the other end of capacitor C5, one end of resistor R7, and one end of resistor R8, and the other end of resistor R6 is grounded; the other ends of resistor R7 and resistor R8 are both connected to pin 4 of switching power supply chip U1; pin 8 of switching power supply chip U1 is grounded; pins 5 and 6 of switching power supply chip U1 are both connected to transformer module 400.

[0022] In this embodiment, the transformer module 400 includes a transformer T1, a capacitor C1, a resistor R9, a resistor R2, a diode D2, a capacitor C2, a diode D1, a capacitor C3, a resistor R10, an electrolytic capacitor CE4, a resistor R13, and an electrolytic capacitor CE5; the transformer T1 includes a first transformer section T1A and a second transformer section T1B; one end of capacitor C1, one end of resistor R9, one end of capacitor C2, and pin 7 of the first transformer section T1A are all connected to the other end of inductor L1; the other end of resistor R9 and the other end of capacitor C1 are all connected to one end of resistor R2; the other end of resistor R2 is connected to the negative terminal of diode D2; the positive terminal of diode D2 is connected to pin 5 and pin 6 of the switching power supply chip U1, pin 6 of the first transformer section T1A, and the capacitor... The other end of C2 is connected to all terminals; pin 5 of the first transformer section T1A is connected to the positive terminal of diode D1 and one end of capacitor C3; the other end of capacitor C3 is connected to one end of resistor R10; the negative terminal of diode D1 is connected to the other end of resistor R10, the positive terminal of electrolytic capacitor CE4, one end of resistor R13, and the positive terminal of electrolytic capacitor CE5, and the negative terminal of diode D1 is used as the positive terminal of the output target voltage; pin 4 of the first transformer section T1A, the negative terminal of electrolytic capacitor CE4, the other end of resistor R13, and the negative terminal of electrolytic capacitor CE5 are all grounded, and the first transformer section T1A is used as the negative terminal of the output target voltage; pin 3 of the second transformer section T1B is connected to the positive terminal of diode D3; pin 1 of the second transformer section T1B is connected to the other end of resistor R6.

[0023] The working principle of a low-latency power adapter in this embodiment is as follows:

[0024] The input power supply adopts an AC voltage of 100V-240V.

[0025] The input power enters the circuit through fuse F1, which is used for overcurrent protection.

[0026] Rectifier BD1 converts the input power into pulsating DC power.

[0027] Inductor L1, inductor L2, electrolytic capacitor CE1, and electrolytic capacitor CE2 form a π-type filter to smooth the pulsating DC after rectification and reduce voltage ripple.

[0028] The switching power supply chip U1 (OBGZ53_SOP-7) serves as the core control element, stabilizing the output voltage by adjusting the switching frequency and duty cycle.

[0029] Resistors R1 and R11 are connected in series to pin 2 of rectifier BD1 to provide the startup voltage for switching power supply chip U1.

[0030] Resistor R4, capacitor C4 and electrolytic capacitor CE3 form an RC network to provide bias voltage to pin 1 of the switching power supply chip U1.

[0031] Diode D3, resistors R5, R6, R3, capacitor C5, resistors R7 and R8 form a feedback and control loop to adjust the operating state of the switching power supply chip U1 to stabilize the output voltage.

[0032] Pin 5 and pin 6 of the switching power supply chip U1 are connected to pin 6 of the first transformer section T1A of the transformer T1 to drive the transformer.

[0033] Transformer T1 includes a first transformer section T1A and a second transformer section T1B, which realize voltage transformation and electrical isolation.

[0034] Pin 7 of the first transformer section T1A is connected to the filtered DC power as the input to the primary winding.

[0035] Pin 6 of the first transformer section T1A is connected to pins 5 and 6 of the switching power supply chip U1 to receive the switching signal output by the switching power supply chip U1.

[0036] Pin 5 of the first transformer section T1A forms the output circuit of the secondary winding through components such as diode D1, capacitor C3, resistor R10, electrolytic capacitor CE4, resistor R13, and electrolytic capacitor CE5, ultimately outputting the target voltage.

[0037] Pin 3 of the second transformer section T1B is connected to the positive terminal of diode D3, serving as an auxiliary winding to provide operating voltage for the switching power supply chip U1.

[0038] Pin 1 of the second transformer section T1B is connected to the other end of resistor R6, forming a feedback loop.

[0039] When in use, the input power is rectified into pulsating DC power by fuse F1 and rectifier BD1.

[0040] The pulsating DC current is transformed into a smoother DC current by passing through a filter composed of inductor L1, electrolytic capacitor CE1, inductor L2, and electrolytic capacitor CE2.

[0041] The smoothed DC power is supplied to the switching power supply chip U1, and the switching power supply chip U1 generates a high-frequency pulse signal to drive the transformer T1.

[0042] Transformer T1 transforms the voltage according to the turns ratio, and the voltage is rectified and filtered by components such as diode D1 and capacitor C3 to finally output a stable target voltage. On one hand, this aims to enable the power adapter to respond to load changes quickly and provide a stable output voltage, suitable for delay-sensitive applications. On the other hand, the use of efficient switching power supply technology and optimized filtering circuits aims to reduce energy loss and improve power conversion efficiency. Furthermore, a feedback control mechanism effectively suppresses voltage fluctuations, aiming to ensure output voltage stability and reliability.

[0043] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A low latency power adapter, characterized by, include: A rectifier module (100) is used to connect to an input power supply; A switching power supply module (200) is provided, wherein the input terminal of the switching power supply module (200) is connected to the output terminal of the rectifier module (100); A filter module (300) is provided, the input of which is connected to the output of the rectifier module (100). A transformer module (400) is provided, the input terminal of which is connected to the output terminal of the filter module (300), and the transformer module (400) is also connected to the switching power supply module (200). The output terminal of the transformer module (400) is used to output the target voltage.

2. The power adapter according to claim 1, characterized in that: The rectifier module (100) includes a rectifier BD1 and a fuse F1; One end of the fuse F1 is used to connect to the L terminal of the input power supply; Pin 3 of the rectifier BD1 is connected to the other end of the fuse F1; Pin 4 of the rectifier BD1 is grounded; Pin 1 of the rectifier BD1 is used to connect to the N terminal of the input power supply; Pin 2 of the rectifier BD1 is connected to the input terminal of the switching power supply module (200) and the input terminal of the filter module (300).

3. The power adapter according to claim 2, characterized in that: The filtering module (300) includes inductor L1, inductor L2, electrolytic capacitor CE1, and electrolytic capacitor CE2; One end of the inductor L1 and the positive terminal of the electrolytic capacitor CE1 are both connected to pin 2 of the rectifier BD1. The negative terminal of the electrolytic capacitor CE1 and one end of the inductor L2 are both grounded; The other end of the inductor L1 is connected to the positive terminal of the electrolytic capacitor CE2 and the input terminal of the transformer module (400); The negative terminal of the electrolytic capacitor CE2 and the other end of the inductor L2 are both grounded.

4. The power adapter according to claim 3, characterized in that: The switching power supply module (200) includes a switching power supply chip U1, resistors R1, R11, R12, R4, electrolytic capacitor CE3, diode D3, capacitor C4, resistors R5, R6, R3, capacitor C5, R7, and R8. The switching power supply chip U1 is OBGZ53_SOP-7; One end of the resistor R1 is connected to pin 2 of the rectifier BD1; One end of the resistor R11 is connected to the other end of the resistor R1; The other end of resistor R11 is connected to one end of resistor R4, the positive terminal of electrolytic capacitor CE3, and one end of resistor R12. The negative terminal of the electrolytic capacitor CE3 and one end of the capacitor C4 are both grounded. The other end of resistor R4 and the other end of capacitor C4 are connected to pin 1 of the switching power supply chip U1. The other end of the resistor R12 is connected to the negative terminal of the diode D3; The positive terminal of the diode D3 is connected to one end of the resistor R5 and the transformer module (400); The other end of resistor R5 is connected to pin 2 of the switching power supply chip U1, one end of resistor R6, one end of resistor R3, and one end of capacitor C5. The other end of resistor R6 is connected to the transformer module (400), the other end of resistor R3, the other end of capacitor C5, one end of resistor R7, and one end of resistor R8, and the other end of resistor R6 is grounded. The other end of resistor R7 and the other end of resistor R8 are both connected to pin 4 of the switching power supply chip U1. Pin 8 of the switching power supply chip U1 is grounded; Pin 5 and pin 6 of the switching power supply chip U1 are both connected to the transformer module (400).

5. The power adapter according to claim 4, characterized in that: The transformer module (400) includes a transformer T1, a capacitor C1, a resistor R9, a resistor R2, a diode D2, a capacitor C2, a diode D1, a capacitor C3, a resistor R10, an electrolytic capacitor CE4, a resistor R13, and an electrolytic capacitor CE5. The transformer T1 includes a first transformer section T1A and a second transformer section T1B; One end of capacitor C1, one end of resistor R9, one end of capacitor C2, and pin 7 of the first transformer section T1A are all connected to the other end of inductor L1. The other end of resistor R9 and the other end of capacitor C1 are both connected to one end of resistor R2. The other end of the resistor R2 is connected to the negative terminal of the diode D2; The positive terminal of the diode D2 is connected to pin 5 of the switching power supply chip U1, pin 6 of the switching power supply chip U1, pin 6 of the first transformer section T1A, and the other end of the capacitor C2. Pin 5 of the first transformer section T1A is connected to the positive terminal of diode D1 and one end of capacitor C3. The other end of the capacitor C3 is connected to one end of the resistor R10; The negative terminal of the diode D1 is connected to the other end of the resistor R10, the positive terminal of the electrolytic capacitor CE4, one end of the resistor R13, and the positive terminal of the electrolytic capacitor CE5. The negative terminal of the diode D1 is used as the positive terminal of the output target voltage. Pin 4 of the first transformer section T1A, the negative terminal of electrolytic capacitor CE4, the other end of resistor R13, and the negative terminal of electrolytic capacitor CE5 are all grounded, and the first transformer section T1A is used to output the negative terminal of the target voltage. Pin 3 of the second transformer section T1B is connected to the positive terminal of the diode D3; Pin 1 of the second transformer section T1B is connected to the other end of the resistor R6.

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