CN206164359U - ACDC converting circuit and control module thereof - Google Patents
ACDC converting circuit and control module thereof Download PDFInfo
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- CN206164359U CN206164359U CN201621046353.6U CN201621046353U CN206164359U CN 206164359 U CN206164359 U CN 206164359U CN 201621046353 U CN201621046353 U CN 201621046353U CN 206164359 U CN206164359 U CN 206164359U
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Abstract
The utility model discloses a ACDC converting circuit and control module thereof, in the main switch pipe was in the turn -on time under the on -state, whether the inductive current that current detection circuit detected among the ACDC converting circuit was greater than first threshold value: if deny, then the biggest shutoff time choice circuit sets up the biggest turn -off time of main switch pipe into T1, if then the biggest shutoff time choice circuit sets up the biggest turn -off time of main switch pipe into T2, the counter was counted for T2's number of times the main switch the biggest turn -off time of pipe, reached N, then ACDC converting circuit entering short -circuit protection state when the counting value. The utility model discloses not only can guarantee very fast system start -up speed, output current is little when ensureing system's short circuit moreover, and system reliability is high, has solved the contradiction of start -up and short circuit well.
Description
Technical field
The utility model belongs to AC/DC circuit design technical fields, and in particular to a kind of AC/DC change-over circuits and its
Control module.
Background technology
In single-stage exchange input, the AC/DC change-over circuits of direct current output, because input is line voltage, there is power frequency
Ripple, output needs bulky capacitor to filter the ripple, to obtain DC voltage or DC current.
When system (i.e. AC/DC change-over circuits) starts, output voltage is 0, because output capacitance is big, needs certain hour
Output voltage is set to rise to certain value.And the starting time of system is then more short better, it is desirable on startup, output is inputed to
The dutycycle of main metal-oxide-semiconductor wishes as big as possible in energy as much as possible, i.e. circuit.
And in system output short-circuit, output voltage is also close 0, in order to reduce output current during short circuit, it is desirable to defeated
Enter to energy as few as possible is exported, i.e., the dutycycle of main metal-oxide-semiconductor wishes as little as possible.On startup, on output voltage needs
Certain value is raised to, system just can distinguish startup and short circuit by sampling and outputting voltage, so as to carry out different process.Institute
So that on startup when output voltage does not also rise to certain value, system cannot judge short circuit and startup, therefore short-circuit protection and open
The dynamic requirement to system is again contradiction.
Existing solution is that, when output voltage is less than certain value, with less duty cycle, general setting is led
The turn-off time of metal-oxide-semiconductor is more than 100us, it is ensured that in short-circuit protection, output current is less than certain value to system.So way exists
During startup, output voltage is risen to before certain value, and the rising of output voltage is very slow, certainly will have impact on the speed of startup.
The content of the invention
Based on above-mentioned, the utility model provides a kind of AC/DC change-over circuits and its control module, not only can ensure compared with
Fast system toggle speed, and guarantee that output current is little during system short-circuit, system reliability is high, solve well startup and
The contradiction of short circuit.
A kind of control module of AC/DC change-over circuits, including：Timing circuit, current detection circuit, maximum turn-off time choosing
Select circuit and counter；
The timing circuit carries out timing to the ON time of main switch, in the case where main switch is in the conduction state
In one ON time, whether the inductive current in the current detection circuit detection AC/DC change-over circuits is more than first threshold：If
No, then the maximum turn-off time of main switch is set to T1 by the maximum turn-off time selection circuit；If so, the then maximum
The maximum turn-off time of main switch is set to T2 by turn-off time selection circuit；
The counter is counted to the main switch maximum turn-off time for the number of times of T2, when count value reaches n times, then
AC/DC change-over circuits enter short-circuit protection state；Wherein, T1 and T2 are default time value and T2 ＞ T1, N are more than 1
Natural number.
Further, the AC/DC change-over circuits also include zero cross detection circuit；When the zero cross detection circuit is detected
When inductive current is 0, or when AC/DC change-over circuits are entered under short-circuit protection state status or the input power down of AC/DC change-over circuits
In the case of, then the count value is reset.
Further, when the maximum turn-off time of main switch being T1, the zero cross detection circuit detects inductance electricity
Flow for 0, then reset the count value.
Further, the counter is counted to the main switch maximum turn-off time for the number of times of T2, is implemented
For：It is 0 that counter initializes the count value, and in the conduction state for either switch cycle main switch lower first turns on
In time, if current detection circuit detects the inductive current in AC/DC change-over circuits and is more than first threshold, during maximum shut-off
Between selection circuit the maximum turn-off time of main switch is set to into T2, the count value of counter adds 1.
A kind of AC/DC change-over circuits, including above-mentioned control module.
Based on above-mentioned technical proposal, the utility model not only can ensure system toggle speed faster, and guarantee be
Output current is little during system short circuit, and system reliability is high, and the contradiction started with short circuit is solved well.
Description of the drawings
Fig. 1 (a) is the structural representation of inverse-excitation type AC/DC change-over circuits.
Fig. 1 (b) is the structural representation of voltage-dropping type AC/DC change-over circuits.
The waveform diagram of metal-oxide-semiconductor Continuity signal BON and inductive current based on Fig. 2.
Fig. 3 (a) is the first implementation process diagram of the utility model AC/DC change-over circuit control methods.
Fig. 3 (b) corresponds to the control circuit of Fig. 3 (a) implementing procedures and realizes structural representation.
Fig. 4 (a) is second implementation process diagram of the utility model AC/DC change-over circuit control methods.
Fig. 4 (b) corresponds to the control circuit of Fig. 4 (a) implementing procedures and realizes structural representation.
Fig. 5 (a) is the third implementation process diagram of the utility model AC/DC change-over circuit control methods.
Fig. 5 (b) corresponds to the control circuit of Fig. 5 (a) implementing procedures and realizes structural representation.
Specific embodiment
In order to more specifically describe the utility model, below in conjunction with the accompanying drawings and specific embodiment is to of the present utility model
Technical scheme is described in detail.
The utility model AC/DC change-over circuit control methods, when main metal-oxide-semiconductor is turned on, in the first ON time (time
Minimum ON time less than or equal to main MOS) in, whether the inductive current in system is judged more than first threshold, if not big
In the threshold value, then by the main metal-oxide-semiconductor maximum turn-off time be set to T1 (it is shorter for the time relative T2, generally tens
us)；If inductive current is more than certain threshold value in the first ON time, the maximum turn-off time of main metal-oxide-semiconductor is set to
T2 (time is long with respect to for T1, generally hundreds of us)；The main metal-oxide-semiconductor maximum turn-off time is counted for the number of times of T2
Number, when count value reaches n times, then system judges that current state is short-circuit condition, and system enters short-circuit protection state.This practicality is new
Type control method is applicable to conventional single-stage AC/DC circuit, flyback (FLYBACK) circuit or such as Fig. 1 as shown in Fig. 1 (a)
Step-down (BUCK) circuit shown in (b).
Fig. 2 is the oscillogram of main metal-oxide-semiconductor Continuity signal BON and inductive current when output voltage low (starting or short circuit).
In BUCK and BUCK/BOOST circuits, the slope that inductive current declines is directly proportional to output voltage；In FLYBACK circuits,
The slope that inductive current declines is directly proportional to n*Vout, and wherein n is the turn ratio of transformer primary secondary, and Vout is output voltage.
Because on startup output voltage is low, therefore inductive current descending slope is little, and inductive current now cannot drop to
0, in continuous conduction mode (CCM).When main metal-oxide-semiconductor maximum the turn-off time be T1 when, due to inductive current descending slope it is little, electricity
Inducing current peak value more and more higher；After several switch periods, then the first ON time internal inductance current peak can be reached big
In the condition of certain threshold value, then the maximum turn-off time be adjusted to T2, because the T2 times are much larger than T1, inductive current can be reduced to
Than relatively low value, so as to avoid inductive current peak too high.
If during starting state, because the maximum turn-off time is the switch periods of T1, from input the energy of output is transferred to
Amount is more, and output voltage can be raised rapidly.After output voltage is raised, then inductive current descending slope becomes big, and inductive current can
0 is descended to, normal working condition can be entered.If during short-circuit condition, because output voltage is low, inductive current is always
0 can not be dropped to, therefore the counting to T2 can not be cleared always, after counting down to N number of, then system enters short-circuit protection shape
State, further reduces from the energy for being input to output transmission, reduces output current during short-circuit protection.
Embodiment 1
As shown in Fig. 3 (a), the present embodiment AC/DC change-over circuit control method flow processs are：When main metal-oxide-semiconductor is turned on, one
Determine in ON time, whether judge inductive current more than certain threshold value, if not being more than the threshold value, by main metal-oxide-semiconductor most high point
Disconnected set of time is T1；If inductive current is more than certain threshold value in certain ON time, by the maximum shut-off of main metal-oxide-semiconductor
Set of time is T2 and makes its number of times plus 1；The system counts main metal-oxide-semiconductor maximum turn-off time is the number of times of T2, when inductive current is arrived
0, then it is the counting of T2 to remove to the maximum turn-off time, is not otherwise reset；Counting when system to the maximum turn-off time for T2 reaches
To after n times, then system judges that current state is short-circuit condition, and system enters short-circuit protection state.
The circuit realiration structure of present embodiment shown in Fig. 3 (b), it includes：Timing circuit U10, current detection circuit
U11, maximum turn-off time selection circuit U13, zero cross detection circuit U14, counter U19 and door U12, OR gate U15 and two
Rest-set flip-flop U18 and U21.When main metal-oxide-semiconductor turns on certain ON time, timing circuit U10 is output as height, and timing circuit
The output of U10 is connected to an input with door U12, current detection circuit U11 detection inductive currents, when inductive current is more than
Certain value, then its be output as height, otherwise it is output as low, and its output is connected to another input and RS with door U12
The clear terminal R of trigger U18.When current detection circuit U11 is output as high, then output end Q of rest-set flip-flop U18 is touched for 0, RS
The output end for sending out device U18 is connected to the grid of main metal-oxide-semiconductor, that is, produce the cut-off signals of main metal-oxide-semiconductor.When timing circuit U10 and electricity
The output of current detection circuit U11 is all height, and the output with door U12 is also height, is otherwise output as with door U12 low.With door U12's
Output is connected to the setting end S of rest-set flip-flop U21, and main metal-oxide-semiconductor drives rising edge signal to be connected to the clear terminal of rest-set flip-flop U21
Output end Q of R, rest-set flip-flop U21 is connected to the input of maximum turn-off time selection circuit U13.It is main when main metal-oxide-semiconductor is turned on
Metal-oxide-semiconductor drives rising edge signal to reset the output of rest-set flip-flop U21；When height is output as with door U12, then rest-set flip-flop U21
Output be set to height, be otherwise always held at low level.When the input of maximum turn-off time selection circuit U13 is high, then
The maximum turn-off time is T2；When the input of maximum turn-off time selection circuit U13 is low, then the maximum turn-off time is T1.When
When the main metal-oxide-semiconductor turn-off time reaches the maximum turn-off time that maximum turn-off time selection circuit U13 is arranged, maximum turn-off time choosing
Select circuit U 13 and be output as height, otherwise it is output as low.And the output end of maximum turn-off time selection circuit U13 be connected to or
One input of door U15.Zero cross detection circuit U14 detections inductive current whether zero passage, when inductive current zero passage, then its is defeated
Go out for height, otherwise it is output as low.The output of zero cross detection circuit U14 is connected to another input and counting of OR gate U15
The input of device U19.When the output of maximum turn-off time selection circuit U13 or zero cross detection circuit U14 wherein has one for height,
Then OR gate U15 is output as height, and the output of OR gate U15 is connected to the setting end S of rest-set flip-flop U18, the output of rest-set flip-flop U18
End Q is height, and the output of rest-set flip-flop U18 is connected to the grid of main metal-oxide-semiconductor, that is, produces the Continuity signal of main metal-oxide-semiconductor.When zero passage inspection
Slowdown monitoring circuit U14 is output as height, then counter U19 is counted and is cleared, and is not otherwise reset, and it is maximum that counter U19 adds up main metal-oxide-semiconductor
Turn-off time is the number of times of T2, after the counting of counter U19 reaches n times, is then output as height.The output of counter U19 connects
The input of short-circuit protection circuit U20 is connected to, when the input of short-circuit protection circuit U20 is high, short-circuit protection circuit U20 is then right
System carries out short-circuit protection, does not otherwise carry out short-circuit protection.
Embodiment 2
As shown in Fig. 4 (a), the present embodiment AC/DC change-over circuit control method flow processs are：When main metal-oxide-semiconductor is turned on, one
Determine in ON time, whether judge inductive current more than certain threshold value, if not being more than the threshold value, by main metal-oxide-semiconductor most high point
Disconnected set of time is T1；If inductive current is more than certain threshold value in certain ON time, by the maximum shut-off of main metal-oxide-semiconductor
Set of time is T2 and makes its number of times plus 1；T1 is set to when the main metal-oxide-semiconductor maximum turn-off time and inductive current drops to 0, then clearly
Except being the counting of T2 to the maximum turn-off time, otherwise do not reset；Counting when system to the maximum turn-off time for T2 reaches n times
Afterwards, then system judges that current state is short-circuit condition, and system enters short-circuit protection state.
The circuit realiration structure of present embodiment shown in Fig. 4 (b), it includes：Timing circuit U10, current detection circuit
U11, maximum turn-off time selection circuit U13, zero cross detection circuit U14, counter U19, two and door U12 and U17, OR gate
U15, phase inverter U16 and two rest-set flip-flops U18 and U21.When main metal-oxide-semiconductor turns on certain ON time, timing circuit U10
Height is output as, and the output of timing circuit U10 is connected to an input with door U12, current detection circuit U11 detection electricity
Inducing current, when inductive current is more than certain value, then it is output as height, and otherwise it is output as low, and its output is connected to and door
Another input of U12 and the clear terminal R of rest-set flip-flop U18.When current detection circuit U11 is output as high, then RS triggerings
Output end Q of device U18 is 0, and the output end of rest-set flip-flop U18 is connected to the grid of main metal-oxide-semiconductor, that is, produce the shut-off of main metal-oxide-semiconductor
Signal.When the output of timing circuit U10 and current detection circuit U11 is all height, the output with door U12 is also height, otherwise with door
U12 is output as low.With the setting end S that the output of door U12 is connected to rest-set flip-flop U21, main metal-oxide-semiconductor driving rising edge signal company
The clear terminal R of rest-set flip-flop U21 is connected to, output end Q of rest-set flip-flop U21 is connected to maximum turn-off time selection circuit U13's
Input.When main metal-oxide-semiconductor is turned on, main metal-oxide-semiconductor drives rising edge signal to reset the output of rest-set flip-flop U21；When with door U12's
Height is output as, then the output of rest-set flip-flop U21 is set to height, is otherwise always held at low level.Select when the maximum turn-off time
When the input of circuit U 13 is high, then the maximum turn-off time is T2；When the input of maximum turn-off time selection circuit U13 is low,
Then the maximum turn-off time is T1.The maximum shut-off that maximum turn-off time selection circuit U13 is arranged is reached when the main metal-oxide-semiconductor turn-off time
During the time, maximum turn-off time selection circuit U13 is output as height, and otherwise it is output as low.And the maximum turn-off time selects electricity
The output end of road U13 is connected to an input of OR gate U15.Zero cross detection circuit U14 detections inductive current whether zero passage, when
During inductive current zero passage, then it is output as height, and otherwise it is output as low.The output of zero cross detection circuit U14 is connected to OR gate U15
Another input and an input with door U17.When maximum turn-off time selection circuit U13 or zero cross detection circuit
The output of U14 wherein has one for height, then OR gate U15 is output as height, and the output of OR gate U15 is connected to rest-set flip-flop U18's
End S is set, and output end Q of rest-set flip-flop U18 is height, and the output of rest-set flip-flop U18 is connected to the grid of main metal-oxide-semiconductor, that is, produces
The Continuity signal of main metal-oxide-semiconductor.The output of rest-set flip-flop U21 is connected to another input with door U17 through phase inverter U16,
With the input that the output end of door U17 is connected to counter U19, it produces the mode of the reset signal of counter U19 and implements
Example 1 is different.In certain ON time, system inductance electric current be not more than certain value, then be output as with door U12 it is low, then
The output of rest-set flip-flop U21 is also always low, and after phase inverter U16, phase inverter U16 is output as the output of rest-set flip-flop U21
Height, and inductive current zero passage, i.e. zero cross detection circuit U14 are output as height, then be output as height with door U17, by counter
U19 resets, and does not otherwise reset, and counter U19 adds up number of times of the main metal-oxide-semiconductor maximum turn-off time for T2.When the meter of counter U19
Number is reached after n times, then be output as height.The output of counter U19 is connected to the input of short-circuit protection circuit U20, works as short circuit
When the input of protection circuit U20 is high, short-circuit protection circuit U20 then carries out short-circuit protection to system, does not otherwise carry out short-circuit guarantor
Shield.
Embodiment 3
As shown in Fig. 5 (a), the present embodiment AC/DC change-over circuit control method flow processs are：When main metal-oxide-semiconductor is turned on, one
Determine in ON time, whether judge inductive current more than certain threshold value, if not being more than the threshold value, by main metal-oxide-semiconductor most high point
Disconnected set of time is T1；If inductive current is more than certain threshold value in certain ON time, by the maximum shut-off of main metal-oxide-semiconductor
Set of time is T2 and makes its number of times plus 1；After system reaches n times to the maximum turn-off time for the counting of T2, then system judges
Current state is short-circuit condition, and system enters short-circuit protection state；When system enters short-circuit protection state or input power down, then
Remove to the maximum turn-off time for T2 counting.
The circuit realiration structure of present embodiment shown in Fig. 5 (b), it includes：Timing circuit U10, current detection circuit
U11, maximum turn-off time selection circuit U13, zero cross detection circuit U14, counter U19 and door U12, OR gate U15 and two
Rest-set flip-flop U18 and U21.When main metal-oxide-semiconductor turns on certain ON time, timing circuit U10 is output as height, and timing circuit
The output of U10 is connected to an input with door U12, current detection circuit U11 detection inductive currents, when inductive current is more than
Certain value, then its be output as height, otherwise it is output as low, and its output is connected to another input and RS with door U12
The clear terminal R of trigger U18.When current detection circuit U11 is output as high, then output end Q of rest-set flip-flop U18 is touched for 0, RS
The output end for sending out device U18 is connected to the grid of main metal-oxide-semiconductor, that is, produce the cut-off signals of main metal-oxide-semiconductor.When timing circuit U10 and electricity
The output of current detection circuit U11 is all height, and the output with door U12 is also height, is otherwise output as with door U12 low.With door U12's
Output is connected to the setting end S of rest-set flip-flop U21, and main metal-oxide-semiconductor drives rising edge signal to be connected to the clear terminal of rest-set flip-flop U21
Output end Q of R, rest-set flip-flop U21 is connected to the input of maximum turn-off time selection circuit U13.It is main when main metal-oxide-semiconductor is turned on
Metal-oxide-semiconductor drives rising edge signal to reset the output of rest-set flip-flop U21；When height is output as with door U12, then rest-set flip-flop U21
Output be set to height, be otherwise always held at low level.When the input of maximum turn-off time selection circuit U13 is high, then
The maximum turn-off time is T2；When the input of maximum turn-off time selection circuit U13 is low, then the maximum turn-off time is T1.When
When the main metal-oxide-semiconductor turn-off time reaches the maximum turn-off time that maximum turn-off time selection circuit U13 is arranged, maximum turn-off time choosing
Select circuit U 13 and be output as height, otherwise it is output as low.And the output end of maximum turn-off time selection circuit U13 be connected to or
One input of door U15.Zero cross detection circuit U14 detections inductive current whether zero passage, when inductive current zero passage, then its is defeated
Go out for height, otherwise it is output as low.The output of zero cross detection circuit U14 is connected to another input of OR gate U15.Work as maximum
The output of turn-off time selection circuit U13 or zero cross detection circuit U14 wherein has one, and for height, then OR gate U15 is output as height,
The output of OR gate U15 is connected to the setting end S of rest-set flip-flop U18, and output end Q of rest-set flip-flop U18 is height, rest-set flip-flop U18
Output be connected to the grid of main metal-oxide-semiconductor, that is, produce the Continuity signal of main metal-oxide-semiconductor.The input and short-circuit protection of counter U19
Circuit U 20 connects, i.e., the reset signal of counter U19 is directly produced by short-circuit protection circuit U20, that is, when system enters short
Road is protected or is input into power down (i.e. system cut-off is restarted) just to count to counter U19 and is zeroed out, and does not otherwise reset, counter
U19 adds up the number of times that the main metal-oxide-semiconductor maximum turn-off time is T2, after the counting of counter U19 reaches n times, is then output as height.
The output of counter U19 is connected to the input of short-circuit protection circuit U20, short when the input of short-circuit protection circuit U20 is high
Road protection circuit U20 then carries out short-circuit protection to system, does not otherwise carry out short-circuit protection.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using this practicality
It is new.Person skilled in the art obviously easily can make various modifications to above-described embodiment, and here is illustrated
General Principle be applied in other embodiment without through performing creative labour.Therefore, the utility model is not limited to above-mentioned
Embodiment, those skilled in the art should according to announcement of the present utility model, the improvement made for the utility model and modification
Should be within protection domain of the present utility model.
Claims (5)
1. a kind of control module of AC/DC change-over circuits, it is characterised in that include：Timing circuit, current detection circuit, maximum
Turn-off time selection circuit and counter；
The timing circuit carries out timing to the ON time of main switch, and first in the case where main switch is in the conduction state is led
In the logical time, whether the inductive current in the current detection circuit detection AC/DC change-over circuits is more than first threshold：If it is not,
Then the maximum turn-off time of main switch is set to T1 by the maximum turn-off time selection circuit；If so, the then most high point
The maximum turn-off time of main switch is set to T2 by disconnected time selection circuit；
The counter is counted to the main switch maximum turn-off time for the number of times of T2, when count value reaches n times, then AC/
DC change-over circuits enter short-circuit protection state；Wherein, T1 and T2 are default time value and T2 ＞ T1, N are the nature more than 1
Number.
2. control module according to claim 1, it is characterised in that：Also include zero cross detection circuit；When zero passage inspection
Slowdown monitoring circuit detect inductive current for 0 when, when AC/DC change-over circuits enter short-circuit protection state status under or AC/DC conversion
Under circuit input power-down conditions, then the count value is reset.
3. control module according to claim 1, it is characterised in that：Also include zero cross detection circuit；When main switch
When the maximum turn-off time is T1, it is 0 that the zero cross detection circuit detects inductive current, then reset the count value.
4. control module according to claim 1, it is characterised in that：First ON time is less than or equal to main switch
Minimum ON time.
5. a kind of AC/DC change-over circuits, it is characterised in that include the control mould as described in Claims 1 to 4 any claim
Block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621046353.6U CN206164359U (en) | 2016-09-09 | 2016-09-09 | ACDC converting circuit and control module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621046353.6U CN206164359U (en) | 2016-09-09 | 2016-09-09 | ACDC converting circuit and control module thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206164359U true CN206164359U (en) | 2017-05-10 |
Family
ID=58651541
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621046353.6U Expired - Fee Related CN206164359U (en) | 2016-09-09 | 2016-09-09 | ACDC converting circuit and control module thereof |
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| CN (1) | CN206164359U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230249A (en) * | 2016-09-09 | 2016-12-14 | 杰华特微电子（杭州）有限公司 | The control method of a kind of AC/DC change-over circuit and control module |
| CN110661405A (en) * | 2019-09-29 | 2020-01-07 | 苏州浪潮智能科技有限公司 | Load protection circuit |
| CN112051883A (en) * | 2020-08-06 | 2020-12-08 | 苏州浪潮智能科技有限公司 | Chip control method for realizing quick current response |
-
2016
- 2016-09-09 CN CN201621046353.6U patent/CN206164359U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230249A (en) * | 2016-09-09 | 2016-12-14 | 杰华特微电子（杭州）有限公司 | The control method of a kind of AC/DC change-over circuit and control module |
| CN106230249B (en) * | 2016-09-09 | 2018-12-14 | 杰华特微电子（杭州）有限公司 | A kind of control method and control module of AC/DC conversion circuit |
| CN110661405A (en) * | 2019-09-29 | 2020-01-07 | 苏州浪潮智能科技有限公司 | Load protection circuit |
| CN110661405B (en) * | 2019-09-29 | 2021-06-29 | 苏州浪潮智能科技有限公司 | Load protection circuit |
| CN112051883A (en) * | 2020-08-06 | 2020-12-08 | 苏州浪潮智能科技有限公司 | Chip control method for realizing quick current response |
| CN112051883B (en) * | 2020-08-06 | 2022-11-29 | 苏州浪潮智能科技有限公司 | Chip control method for realizing quick current response |
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