CN110611302A - Protection circuit of power supply module - Google Patents
Protection circuit of power supply module Download PDFInfo
- Publication number
- CN110611302A CN110611302A CN201910985116.8A CN201910985116A CN110611302A CN 110611302 A CN110611302 A CN 110611302A CN 201910985116 A CN201910985116 A CN 201910985116A CN 110611302 A CN110611302 A CN 110611302A
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- 230000001360 synchronised effect Effects 0.000 claims abstract description 34
- 230000010354 integration Effects 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 description 43
- 238000010586 diagram Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
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Abstract
The invention relates to the technical field of power protection, and provides a protection circuit of a power supply module, which comprises a surge protection circuit, an APFC circuit, an LLC circuit, a synchronous rectification circuit and an overvoltage protection circuit, wherein the surge protection circuit, the APFC circuit, the LLC circuit and the synchronous rectification circuit are sequentially connected, and the overvoltage protection circuit is connected with the LLC circuit. When the power supply has a fault or the output overvoltage phenomenon is caused by improper operation of a user, the power supply protection circuit provided by the invention protects the power supply to prevent the damage to the rear-stage electric equipment.
Description
Technical Field
The invention relates to the technical field of power supply protection, in particular to a protection circuit of a power supply module.
Background
In a power supply system, the most likely faults are short circuits, overloads, grounds, lightning strikes, and the like, and in order to ensure that the power supply system can operate safely and reliably, a protection circuit must be installed to prevent damage to equipment in the subsequent connection work when a fault occurs. Among them, there are many reasons for generating overvoltage in the circuit, such as turning off of the switching device, turning on and off of the power switch, etc. Due to the existence of parasitic inductance in the circuit, voltage spikes can be generated by sudden changes of current caused by various reasons, so that overvoltage is caused, and when the terminal voltage exceeds a certain value, the resistance is sharply reduced, so that transient overvoltage is suppressed.
Disclosure of Invention
The invention aims to provide a protection circuit of a power supply module, which effectively avoids the damage of the subsequent equipment caused by the fault of a power supply circuit.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
the protection circuit of the power supply module comprises a surge protection circuit, an APFC circuit, an LLC circuit, a synchronous rectification circuit and an overvoltage protection circuit, wherein the surge protection circuit, the APFC circuit, the LLC circuit and the synchronous rectification circuit are sequentially connected, and the overvoltage protection circuit is connected with the LLC circuit.
Furthermore, the surge protection circuit comprises a primary lightning protection circuit, a secondary lightning protection circuit, an MEI circuit and a discharge tube, wherein the primary lightning protection circuit, the secondary lightning protection circuit and the MEI circuit are sequentially connected, and the discharge tube is connected between the primary lightning protection circuit and the MEI circuit; the primary lightning protection circuit is connected with alternating current.
Furthermore, the APFC circuit comprises a booster circuit, a power supply chip and an integration circuit connected with the power supply chip, wherein the booster circuit is connected with the surge protection circuit, and the power supply chip and the integration circuit are respectively connected with the booster circuit.
Further, the model of the power supply chip is L6561.
Furthermore, the LLC circuit includes a primary input circuit, a power resonance circuit, and a double-transformer circuit, which are connected in sequence, wherein the primary input circuit is connected to the APFC circuit; the double-transformation circuit comprises a transformer T3, the secondary side of the transformer T3 comprises a first secondary side and a second secondary side, and the first secondary side and the second secondary side are connected in parallel.
Further, the power supply resonance circuit comprises a power supply resonance chip, and the model of the power supply resonance chip is MCZ5211 ST.
Furthermore, the synchronous rectification circuit comprises a first rectification circuit and a second rectification circuit which are connected with each other, and the first rectification circuit and the second rectification circuit are respectively connected with the LLC circuit.
Further, the first rectification circuit comprises a first synchronous rectification chip, and the model of the first synchronous rectification chip is TEA1792 TS; the second rectifying circuit comprises a second synchronous rectifying chip, and the model of the second synchronous rectifying chip is TEA1792 TS.
Furthermore, the overvoltage protection circuit comprises a drive protection circuit and a power supply drive circuit connected with the drive protection circuit, and the drive protection circuit is connected with the LLC circuit.
Furthermore, the power driving circuit comprises a power driving chip, and the model of the power driving chip is TSM 1014.
Compared with the prior art, the invention has the beneficial effects that:
(1) when the power supply has a fault or the output overvoltage phenomenon is caused by improper operation of a user, the power supply protection circuit provided by the invention protects the power supply to prevent the damage of the rear-stage electric equipment;
(2) the surge protection circuit can provide safety protection for various electronic equipment, instruments and meters and communication lines, and can conduct and shunt in a very short time when peak current or voltage is suddenly generated in loops of the equipment and the instruments or the communication lines due to external interference, so that damage of surge to the equipment is avoided. The MEI circuit is an electromagnetic compatibility circuit, is used for resisting electromagnetic interference, and can absorb the electromagnetic interference and convert the electromagnetic interference into heat to be consumed;
(3) the special power transistor M4 and the special power transistor M5 with extremely low on-state resistance are adopted in the synchronous rectification circuit of the invention to replace the traditional diode so as to reduce the rectification loss, greatly improve the efficiency of the synchronous rectification chip and avoid the four-region voltage caused by Schottky barrier voltage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a block diagram of the modules of the present invention;
fig. 2 is a schematic diagram of a surge protection circuit of the present invention;
FIG. 3 is a schematic diagram of an APFC circuit of the present invention;
FIG. 4 is a schematic diagram of an LLC circuit of the invention;
FIG. 5 is a schematic diagram of a synchronous rectifier circuit of the present invention;
fig. 6 is a schematic diagram of an overvoltage protection circuit of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Also, in the description of the present invention, the terms "first", "second", and the like are used for distinguishing between descriptions and not necessarily for describing a relative importance or implying any actual relationship or order between such entities or operations.
Example 1:
the protection circuit of the power supply module comprises a surge protection circuit, an APFC circuit, an LLC circuit, a synchronous rectification circuit and an overvoltage protection circuit, wherein the surge protection circuit, the APFC circuit, the LLC circuit and the synchronous rectification circuit are sequentially connected, and the overvoltage protection circuit is connected with the LLC circuit. When the power supply has a fault or the output overvoltage phenomenon is caused by improper operation of a user, the power supply protection circuit provided by the invention protects the power supply to prevent the damage to the rear-stage electric equipment.
Furthermore, as shown in fig. 2, the surge protection circuit includes a primary lightning protection circuit, a secondary lightning protection circuit, an MEI circuit, and a discharge tube, the primary lightning protection circuit, the secondary lightning protection circuit, and the MEI circuit are connected in sequence, the discharge tube is connected between the primary lightning protection circuit and the MEI circuit, and the primary lightning protection circuit is connected to the alternating current. A surge condition occurs when the input voltage exceeds the instantaneous overvoltage of the normal operating voltage, a surge being a sharp pulse that occurs in only a few millionths of a second and can be caused by: heavy equipment, short circuit, power switching or large-scale engine, etc., and the surge protection circuit in the embodiment can effectively absorb sudden huge energy so as to protect the equipment connected at the later stage from being damaged. On the other hand, the surge protection circuit can also provide safety protection for various electronic equipment, instruments and meters and communication lines, and when spike current or voltage is suddenly generated in loops of the equipment and the instruments or the communication lines due to external interference, the surge protection circuit can conduct and shunt in a very short time, so that damage of surge to the equipment is avoided. The MEI circuit is an electromagnetic compatibility circuit and is used for resisting electromagnetic interference, and the MEI circuit can absorb the electromagnetic interference and convert the electromagnetic interference into heat to be consumed.
As shown in fig. 2, the surge protection circuit includes a resistor R1-a resistor R3, a capacitor C1-a capacitor C3, a sliding resistor RL 1-a sliding resistor RL3, a fuse F1, a current transformer HL1, a current transformer HL2, an AC chip, an inductor L1, and a discharge tube GDT; 220V alternating current is connected to one end of the fuse F1, the other end of the fuse F1 is connected with one end of a sliding resistor RL1, one end of a sliding resistor RL2, one end of a resistor R1 and a current transformer HL1 respectively, the other end of the resistor R1 is connected with a resistor R2 and a resistor R3 in series, and the other end of the sliding resistor RL1 is connected with the other end of the resistor R3 and the current transformer HL1 respectively; the capacitor C2 is connected with the capacitor C3 in series and then connected with the current transformer HL1, the capacitor C1 and the current transformer HL2 in parallel, the current transformer HL2 is connected with the input end of the AC chip, and the input end of the AC chip is connected with the inductor L1 and then serves as the output end of the surge protection circuit; discharge tube GDT one end is connected one-level lightning protection circuit, and the MEI circuit is connected to the other end.
It should be noted that the discharge tube GDT is a ceramic gas discharge tube and is connected in parallel in the surge protection circuit, when the circuit normally works, the discharge tube GDT is in a high resistance state, and when overvoltage occurs, the inert gas inside is broken down, so that most of energy is released, and the discharge tube GDT is recovered to be normal, thereby playing a role of protecting the circuit.
Furthermore, as shown in fig. 3, the APFC circuit includes a voltage boost circuit, a power chip, and an integrated circuit connected to the power chip, the voltage boost circuit is connected to the surge protection circuit, and the power chip and the integrated circuit are respectively connected to the voltage boost circuit; the model of the power supply chip is L6561.
As shown in fig. 3, the APFC circuit includes a resistor R4 to a resistor R19, a capacitor C4 to a capacitor C10, a sliding resistor RL4, a diode D1 to a diode D3, a boost inductor HL3, a transistor M1, and a power chip; the output end of the surge protection circuit is respectively connected with one end of a resistor R4, the anode of a diode D1 and a boost inductor HL3, a resistor R4 is sequentially connected with a resistor R5 and a resistor R6 in series, the other end of the resistor R6 is respectively connected with a resistor R16, a capacitor C9 and an MULT pin of a power chip, and the other end of the resistor R16 and the other end of the capacitor C9 are both grounded; the boosting inductor HL3 is also connected with the anode of the diode D2, one end of the resistor R7 and the drain of the transistor M1, the cathode of the diode D1 is connected with the sliding resistor RL4, the cathode of the diode D2 is connected with one end of the sliding resistor RL4, and the other end of the sliding resistor RL4 is respectively connected with one end of the capacitor C5 and one end of the resistor R8 and serves as the output end of the APFC circuit; the COMP pin of the power supply chip is respectively connected with one end of a resistor R9 and one end of a capacitor C8, the other end of a resistor R9 is connected with one end of a capacitor C7, a resistor R8 is sequentially connected with a resistor R10 and a resistor R11 in series, the INV pin of the power supply chip is respectively connected with the other end of the capacitor C7, the other end of the capacitor C8, the other end of a resistor R11, one end of the resistor R12 and one end of the resistor R13, and the other end of the resistor R12 and the other end of the resistor R13 are both grounded; the GD pin of the power chip is connected to one end of a resistor R14 and one end of a resistor R15, the other end of a resistor R15 is connected to the cathode of a diode D3, the other end of a resistor R14 is connected to the anode of a diode D3, one end of a resistor R17, and the gate of a transistor M1, the CS pin of the power chip is connected to one end of a capacitor C10 and one end of a resistor R18, the other end of the capacitor C10 is grounded, the source of the transistor M1 is connected to the other end of the resistor R17, the other end of the resistor R18, and one end of the resistor R19, and the other end of the resistor R19 is grounded.
It should be noted that after normal operation, the input voltage of the APFC circuit is greater than the output voltage of the AC chip, and the diode D1 is kept in the off state all the time after the completion of startup, so the diode D1 can select a slow recovery tube, but the diode D2 is in the high-frequency switching state, so the diode D2 should select a fast recovery tube, generally, the reverse recovery speed of the diode and the peak current of forward conduction are mutually limited, and the forward conduction current that the slow recovery tube can bear is greatly increased, so a large surge current passes through the diode D1, thereby protecting the diode D5 from over-current burnout and preventing too large current from flowing through the diode D5.
The MULT pin of the power chip L6561 is the input end of an internal multiplier, and in the APFC circuit, the input voltage is input from the MULT pin after being divided by a resistor R4, a resistor R5 and a resistor R6; a GD pin of the power chip L6561 is a gate drive output end and is an output end of a gate drive pulse of the transistor M1, and the transistor M1 is controlled to be switched on and off by outputting a pulse voltage; the ZCD pin of the power supply chip L6561 is a zero current detection input end and a current detection output end on the boost inductor HL3, when the boost circuit works in a critical conduction mode, the current of the boost inductor HL3 is detected, and once the current drops to a zero value, the transistor M1 is turned on to enter the next pulse period.
Furthermore, as shown in fig. 4, the LLC circuit includes a primary input circuit, a power resonance circuit, and a double-transformer circuit, which are connected in sequence, where the primary input circuit is connected to the APFC circuit; the double-transformation circuit comprises a transformer T3, the secondary side of the transformer T3 comprises a first secondary side and a second secondary side, and the first secondary side and the second secondary side are connected in parallel; the power supply resonance circuit comprises a power supply resonance chip, and the model of the power supply resonance chip is MCZ5211 ST. The LLC circuit realizes the output voltage constancy by adjusting the frequency through the power supply resonance chip.
As shown in fig. 4, the LLC circuit includes a resistor R20-a resistor R40, a capacitor C10-a capacitor C11-a capacitor C19, a diode D4-a diode D11, a sliding resistor RL5, a power resonance chip, a transistor M2, a transistor M3, and a double-transformer T3; an HVG pin of the power resonance chip is connected with one end of a resistor R34, the other end of the resistor R34 is connected with one end of a resistor R35 and the cathode of a diode D8, the other end of the resistor R35 is connected with the anode of a diode D8, one end of a resistor R36 and the gate of a transistor M2, and the drain of the transistor M2 is connected with the output end of the APFC circuit and the cathode of a diode D10; an OUT pin of the power supply resonance chip is respectively connected with one end of a capacitor C18 and one end of a resistor R37, and the other end of a capacitor C18 is connected with a VBOOT pin of the power supply resonance chip; the source electrode of the transistor M2 is respectively connected with one end of the resistor R36, the other end of the resistor R37, the drain electrode of the transistor M3 and the primary side 1 pin of the double-transformer T3; the LVG pin of the power supply resonance chip is connected with one end of a resistor R40, the other end of a resistor R40 is respectively connected with one end of a resistor R39 and the cathode of a diode D9, the other end of a resistor R39 is respectively connected with the other end of a diode D9, one end of a resistor R38 and the grid of a transistor M3, and the source of the transistor M3 is respectively connected with the other end of a resistor R38, the anode of the diode D11 and the primary side 2 pin of the double-transformer; and secondary sides of the double transformers are connected in parallel and then serve as output ends of the LLC circuit.
Furthermore, as shown in fig. 5, the synchronous rectification circuit includes a first rectification circuit and a second rectification circuit connected to each other, and the first rectification circuit and the second rectification circuit are respectively connected to the LLC circuit; the first rectifying circuit comprises a first synchronous rectifying chip, and the model of the first synchronous rectifying chip is TEA1792 TS; the second rectifying circuit comprises a second synchronous rectifying chip, and the model of the second synchronous rectifying chip is TEA1792 TS. The synchronous rectification circuit adopts the special power transistor M4 and the special transistor M5 with extremely low on-state resistance to replace the traditional diode so as to reduce the rectification loss, greatly improve the efficiency of the synchronous rectification chip and avoid the four-region voltage caused by Schottky barrier voltage.
As shown in fig. 5, the synchronous rectification circuit includes a resistor R41-a resistor R46, a resistor R65, a resistor R66, a capacitor C20-a capacitor C23, a diode D12, a diode D13, a transistor M4, a transistor M5, a first synchronous rectification chip, and a second synchronous rectification chip; a secondary side 3 pin of the double-transformer T3 is respectively connected with one end of a resistor R65, one end of a capacitor C22 and a drain of a transistor M4, the other end of the capacitor C22 is connected with one end of a resistor R66, the other end of a resistor R65 is connected with an SRSENCE pin of a first synchronous rectification chip, a gate of the transistor M4 is respectively connected with one end of the resistor R41, one end of a resistor R42 and an anode of a diode D12, a source of the transistor M4 is respectively connected with the other end of the resistor R66 and the other end of the resistor R41, and a cathode of the diode D12 and the other end of the resistor R42 are respectively connected with a DRIVER pin of the first synchronous rectification chip; a secondary side 6 pin of the double-transformer T3 is connected to one end of a resistor R45, one end of a capacitor C23, and a drain of the transistor M5, the other end of the resistor R45 is connected to a SRSENCE pin of the second synchronous rectification chip, the other end of the capacitor C23 is connected to one end of a resistor R46, the other end of the resistor R46 is connected to a source of the transistor M5 and one end of a resistor R44, the other end of the resistor R44 is connected to a gate of the transistor M5, one end of the resistor R43, and an anode of the diode D13, and the other end of the resistor R43 and a cathode of the diode D13 are connected to a DRIVER pin of the second synchronous rectification chip.
Furthermore, as shown in fig. 6, the overvoltage protection circuit includes a driving protection circuit, and a power driving circuit connected to the driving protection circuit, where the driving protection circuit is connected to the LLC circuit; the power driving circuit comprises a power driving chip, and the model of the power driving chip is TSM 1014. The output end of the drive protection circuit outputs 30-36V voltage.
As shown in fig. 6, the overvoltage protection circuit includes a resistor R49-a resistor R64, a capacitor C24-a capacitor C33, a diode D14-a diode D18, a sliding resistor RL6, a sliding resistor RL7, a current transformer HL4, a power driving chip, and an optical coupler; the output end of the LLC circuit is respectively connected with a cathode of a diode D12 and a capacitor C24, the capacitor C24, the capacitor C25, the capacitor C26, a resistor R49, a resistor R50, a resistor R51, a capacitor C27, a current transformer HL4, a resistor R54 and a capacitor C28 are sequentially connected in parallel, the resistor R52 is connected between a resistor R51 and the capacitor C27, and the resistor R53 is connected in parallel with a resistor R52; the anode of the diode D14 is connected with the cathode of the diode D15, the anode of the diode D15 is connected with one end of a resistor R48, the other end of the resistor R48 is connected with a resistor R47 and an optical coupler respectively, the optical coupler is also connected with one end of a resistor R55, the anode of the diode D16, the anode of the diode D17 and one end of a capacitor C31 respectively, the other end of the resistor R55 is connected with a VCC pin of a power driving chip, the cathode of the diode D16 is connected with a Ccout pin of the power driving chip and one end of a capacitor C34 respectively, and the other end of the capacitor C34 is connected with a Cc-pin of the power driving chip and one end of a resistor R61 respectively; the cathode of the diode D17 is connected with a Cvout pin of the power driving chip and one end of a resistor R60 respectively, the other end of the resistor R60 is connected with one end of a capacitor C33, the other end of the capacitor C33 is connected with a Cv-pin of the power driving chip, one end of a resistor R63 and one end of a resistor R56 respectively, the other end of the resistor R56 is connected with a current transformer HL4, and a capacitor C32 is connected with the resistor R56 in parallel; the other end of the resistor R63 is respectively connected with the sliding resistor RL7 and the resistor R64; the other end of the resistor R61 is connected with the anode of the diode D18, the cathode of the diode D18 is connected with the Cc + pin of the power driving chip, the Cc + pin of the power driving chip is also connected with one end of the resistor R59, one end of the sliding resistor RL6 and one end of the resistor R58, the other end of the resistor R59 is grounded, the other end of the sliding resistor RL6 is connected with the other end of the resistor R58 and one end of the resistor R57, and the other end of the resistor R57 is connected with the capacitor C29 and the Verf pin of the power driving chip.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A protection circuit of a power supply module is characterized in that: the surge protection circuit, the APFC circuit, the LLC circuit and the synchronous rectification circuit are connected in sequence, and the overvoltage protection circuit is connected with the LLC circuit.
2. The protection circuit of a power supply module according to claim 1, wherein: the surge protection circuit comprises a primary lightning protection circuit, a secondary lightning protection circuit, an MEI circuit and a discharge tube, wherein the primary lightning protection circuit, the secondary lightning protection circuit and the MEI circuit are sequentially connected, and the discharge tube is connected between the primary lightning protection circuit and the MEI circuit;
the primary lightning protection circuit is connected with alternating current.
3. The protection circuit of a power supply module according to claim 1, wherein: the APFC circuit comprises a booster circuit, a power chip and an integration circuit connected with the power chip, the booster circuit is connected with the surge protection circuit, and the power chip and the integration circuit are respectively connected with the booster circuit.
4. The protection circuit of a power supply module according to claim 2, wherein: the model of the power supply chip is L6561.
5. The protection circuit of a power supply module according to claim 1, wherein: the LLC circuit comprises a primary input circuit, a power supply resonance circuit and a double-transformation circuit which are sequentially connected, wherein the primary input circuit is connected with the APFC circuit;
the double-transformation circuit comprises a transformer T3, the secondary side of the transformer T3 comprises a first secondary side and a second secondary side, and the first secondary side and the second secondary side are connected in parallel.
6. The protection circuit of the power supply module according to claim 5, wherein: the power supply resonance circuit comprises a power supply resonance chip, and the model of the power supply resonance chip is MCZ5211 ST.
7. The protection circuit of a power supply module according to claim 1, wherein: the synchronous rectification circuit comprises a first rectification circuit and a second rectification circuit which are connected with each other, and the first rectification circuit and the second rectification circuit are respectively connected with the LLC circuit.
8. The protection circuit of the power supply module according to claim 7, wherein: the first rectifying circuit comprises a first synchronous rectifying chip, and the model of the first synchronous rectifying chip is TEA1792 TS; the second rectifying circuit comprises a second synchronous rectifying chip, and the model of the second synchronous rectifying chip is TEA1792 TS.
9. The protection circuit of a power supply module according to claim 1, wherein: the overvoltage protection circuit comprises a drive protection circuit and a power supply drive circuit connected with the drive protection circuit, and the drive protection circuit is connected with the LLC circuit.
10. The protection circuit of a power supply module according to claim 9, wherein: the power driving circuit comprises a power driving chip, and the model of the power driving chip is TSM 1014.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910985116.8A CN110611302A (en) | 2019-10-16 | 2019-10-16 | Protection circuit of power supply module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910985116.8A CN110611302A (en) | 2019-10-16 | 2019-10-16 | Protection circuit of power supply module |
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| CN110611302A true CN110611302A (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910985116.8A Pending CN110611302A (en) | 2019-10-16 | 2019-10-16 | Protection circuit of power supply module |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5621625A (en) * | 1994-08-25 | 1997-04-15 | Samsung Electronics Co., Ltd. | Surge protection circuit for a switching mode power supply |
| KR19990003562U (en) * | 1997-06-30 | 1999-01-25 | 배순훈 | Inrush Current Prevention Circuit in Monitor Power Supply Circuit |
| CN108347172A (en) * | 2018-03-07 | 2018-07-31 | 山东超越数控电子股份有限公司 | A kind of isolation DC-DC power module meeting GJB181 standards |
| CN210517786U (en) * | 2019-10-16 | 2020-05-12 | 内蒙古龙图电气有限公司 | Power supply protection circuit |
-
2019
- 2019-10-16 CN CN201910985116.8A patent/CN110611302A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5621625A (en) * | 1994-08-25 | 1997-04-15 | Samsung Electronics Co., Ltd. | Surge protection circuit for a switching mode power supply |
| KR19990003562U (en) * | 1997-06-30 | 1999-01-25 | 배순훈 | Inrush Current Prevention Circuit in Monitor Power Supply Circuit |
| CN108347172A (en) * | 2018-03-07 | 2018-07-31 | 山东超越数控电子股份有限公司 | A kind of isolation DC-DC power module meeting GJB181 standards |
| CN210517786U (en) * | 2019-10-16 | 2020-05-12 | 内蒙古龙图电气有限公司 | Power supply protection circuit |
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