CN204906191U - Digital chip switching power supply of drive MOS pipe that stand -by power consumption is little - Google Patents
Digital chip switching power supply of drive MOS pipe that stand -by power consumption is little Download PDFInfo
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- CN204906191U CN204906191U CN201520743438.9U CN201520743438U CN204906191U CN 204906191 U CN204906191 U CN 204906191U CN 201520743438 U CN201520743438 U CN 201520743438U CN 204906191 U CN204906191 U CN 204906191U
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- resistance
- pwm chip
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- metal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a digital chip switching power supply of drive MOS pipe that stand -by power consumption is little, including bridge heap, transformer, it still includes: a MOS pipe, the 2nd MOS pipe, PWM chip, wherein PWM chip model is G5199, the output that the bridge is piled is connected with the one end of first resistance and first electric capacity respectively, the other end ground connection of first electric capacity, the other end of first resistance passes through second resistance and is connected with the drain electrode of the 2nd MOS pipe, the source electrode of the 2nd MOS pipe and the VDD pin connection of PWM chip, the grid of the 2nd MOS pipe and the ASU pin connection of PWM chip, the initiating terminal of the vice limit of transformer winding is connected with the anode of first diode, the negative pole of first diode and the source electrode of the 2nd MOS pipe, the one end of second electric capacity is connected respectively, the end end of the vice limit of transformer winding and the other end of second electric capacity be ground connection respectively. The utility model discloses a switching power supply can realize the advantage that ultralow pick -up current, high quick dynamic load response, stand -by power consumption hang down.
Description
[technical field]
The utility model relates to the digit chip Switching Power Supply of the little driven MOS pipe of a kind of stand-by power consumption.
[background technology]
In prior art, Switching Power Supply mostly uses analog chip, and analog chip efficiency is low, stand-by power consumption is high, current precision is low.For this reason, a kind of ultralow starting current, high dynamic load response fast, digit chip Switching Power Supply that stand-by power consumption is low is needed.
[utility model content]
The utility model provides the digit chip Switching Power Supply of the little driven MOS pipe of a kind of stand-by power consumption, and its ultralow starting current, high dynamic load response fast, stand-by power consumption are low.
The technical solution of the utility model is:
A digit chip Switching Power Supply for the driven MOS pipe that stand-by power consumption is little, comprise bridge heap, transformer, it also comprises: the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, PWM chip; Wherein PWM chip model is G5199;
The output of bridge heap is connected with one end of the first resistance and the first electric capacity respectively, the other end ground connection of the first electric capacity; The other end of the first resistance is connected with the drain electrode of the second metal-oxide-semiconductor by the second resistance, the source electrode of the second metal-oxide-semiconductor is connected with the VDD pin of PWM chip, the grid of the second metal-oxide-semiconductor is connected with the ASU pin of PWM chip, the initiating terminal of transformer secondary winding is connected with the anode of the first diode, the negative pole of the first diode is connected respectively with one end of the source electrode of the second metal-oxide-semiconductor, the second electric capacity, the end end of transformer secondary winding and the other end of the second electric capacity ground connection respectively;
The SD pin of PWM chip is by thermistor ground connection, the Multi pin of PWM chip is by the 4th grounding through resistance, the GND pin ground connection of PWM chip, the DRV pin of PWM chip is connected with the grid of the first metal-oxide-semiconductor, the drain electrode of the first metal-oxide-semiconductor is connected with the initiating terminal of transformer primary side, the source electrode of the first metal-oxide-semiconductor is by the 3rd grounding through resistance, the initiating terminal of transformer secondary winding is successively by the 6th resistance, 7th grounding through resistance, 3rd electric capacity is connected to the two ends of the 7th resistance, the CS pin of PWM chip is connected between the source electrode of the first metal-oxide-semiconductor and the 3rd resistance, the VS pin of PWM chip is connected between the 6th resistance and the 7th resistance.
Digit chip Switching Power Supply of the present utility model, adopt digital PWM chip G5199, when not having load or load is less, the power consumption making the first resistance and the second resistance by disconnecting the second metal-oxide-semiconductor is zero, reaches the advantage that stand-by power consumption is low; Digital PWM chip G5199 is worth as detecting by the partial pressure value between the 6th resistance and the 7th resistance, controls driving first metal-oxide-semiconductor, realizes the advantage of ultralow starting current, high dynamic load response fast.
[accompanying drawing explanation]
Fig. 1 is the circuit theory diagrams of the utility model Switching Power Supply.
[embodiment]
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and the embodiments, the utility model is further elaborated.Should be appreciated that embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Below in conjunction with accompanying drawing, one detailed elaboration is done to specific embodiment of the utility model.
Please refer to Fig. 1, the digit chip Switching Power Supply of the driven MOS pipe that a kind of stand-by power consumption of the present utility model is little, comprise bridge heap BD1, transformer T1, it also comprises: the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, PWM chip; Wherein PWM chip model is G5199, and for available chip can be purchased in market, concrete manufacturer is global Semiconductor Co., Ltd, English GLOBALSEMICONDUCTORLIMITED by name;
The output of bridge heap BD1 is connected with one end of the first resistance R1 and the first electric capacity C1 respectively, the other end ground connection of the first electric capacity C1; The other end of the first resistance R1 is connected with the drain electrode of the second metal-oxide-semiconductor Q2 by the second resistance R2, the source electrode of the second metal-oxide-semiconductor Q2 is connected with the VDD pin of PWM chip, the grid of the second metal-oxide-semiconductor Q2 is connected with the ASU pin of PWM chip, the initiating terminal of transformer T1 vice-side winding is connected with the anode of the first diode D1, the negative pole of the first diode D1 is connected respectively with one end of the source electrode of the second metal-oxide-semiconductor Q2, the second electric capacity C2, the end end of transformer T1 vice-side winding and the other end of the second electric capacity C2 ground connection respectively;
The SD pin of PWM chip is by thermistor R5 ground connection, the Multi pin of PWM chip is by the 4th resistance R4 ground connection, the GND pin ground connection of PWM chip, the DRV pin of PWM chip is connected with the grid of the first metal-oxide-semiconductor Q1, the drain electrode of the first metal-oxide-semiconductor Q1 is connected with the initiating terminal on the former limit of transformer T1, the source electrode of the first metal-oxide-semiconductor Q1 is by the 3rd resistance R3 ground connection, the initiating terminal of transformer T1 vice-side winding is successively by the 6th resistance R6, 7th resistance R7 ground connection, 3rd electric capacity C3 is connected to the two ends of the 7th resistance R7, the CS pin of PWM chip is connected between the source electrode of the first metal-oxide-semiconductor Q1 and the 3rd resistance R3, the VS pin of PWM chip is connected between the 6th resistance R6 and the 7th resistance R7.
Digit chip Switching Power Supply of the present utility model, adopt digital PWM chip G5199, when not having load or load is less, the power consumption making the first resistance and the second resistance by disconnecting the second metal-oxide-semiconductor is zero, reaches the advantage that stand-by power consumption is low; Digital PWM chip G5199 is worth as detecting by the partial pressure value between the 6th resistance and the 7th resistance, controls driving first metal-oxide-semiconductor, realizes the advantage of ultralow starting current, high dynamic load response fast.
Above-described the utility model execution mode, does not form the restriction to the utility model protection range.Any do within spirit of the present utility model and principle amendment, equivalent to replace and improvement etc., all should be included within claims of the present utility model.
Claims (1)
1. a digit chip Switching Power Supply for the driven MOS pipe that stand-by power consumption is little, comprises bridge heap, transformer, it is characterized in that, also comprise: the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, PWM chip; Wherein PWM chip model is G5199;
The output of bridge heap is connected with one end of the first resistance and the first electric capacity respectively, the other end ground connection of the first electric capacity; The other end of the first resistance is connected with the drain electrode of the second metal-oxide-semiconductor by the second resistance, the source electrode of the second metal-oxide-semiconductor is connected with the VDD pin of PWM chip, the grid of the second metal-oxide-semiconductor is connected with the ASU pin of PWM chip, the initiating terminal of transformer secondary winding is connected with the anode of the first diode, the negative pole of the first diode is connected respectively with one end of the source electrode of the second metal-oxide-semiconductor, the second electric capacity, the end end of transformer secondary winding and the other end of the second electric capacity ground connection respectively;
The SD pin of PWM chip is by thermistor ground connection, the Multi pin of PWM chip is by the 4th grounding through resistance, the GND pin ground connection of PWM chip, the DRV pin of PWM chip is connected with the grid of the first metal-oxide-semiconductor, the drain electrode of the first metal-oxide-semiconductor is connected with the initiating terminal of transformer primary side, the source electrode of the first metal-oxide-semiconductor is by the 3rd grounding through resistance, the initiating terminal of transformer secondary winding is successively by the 6th resistance, 7th grounding through resistance, 3rd electric capacity is connected to the two ends of the 7th resistance, the CS pin of PWM chip is connected between the source electrode of the first metal-oxide-semiconductor and the 3rd resistance, the VS pin of PWM chip is connected between the 6th resistance and the 7th resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520743438.9U CN204906191U (en) | 2015-09-23 | 2015-09-23 | Digital chip switching power supply of drive MOS pipe that stand -by power consumption is little |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520743438.9U CN204906191U (en) | 2015-09-23 | 2015-09-23 | Digital chip switching power supply of drive MOS pipe that stand -by power consumption is little |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204906191U true CN204906191U (en) | 2015-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520743438.9U Expired - Fee Related CN204906191U (en) | 2015-09-23 | 2015-09-23 | Digital chip switching power supply of drive MOS pipe that stand -by power consumption is little |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204906191U (en) |
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2015
- 2015-09-23 CN CN201520743438.9U patent/CN204906191U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20200923 |