CN115756133A - Output power supply circuit and electronic equipment that intelligence switches - Google Patents
Output power supply circuit and electronic equipment that intelligence switches Download PDFInfo
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- CN115756133A CN115756133A CN202211370322.6A CN202211370322A CN115756133A CN 115756133 A CN115756133 A CN 115756133A CN 202211370322 A CN202211370322 A CN 202211370322A CN 115756133 A CN115756133 A CN 115756133A
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Abstract
The invention provides an output power supply circuit and electronic equipment capable of being switched intelligently, which comprises: the device comprises a voltage regulating loop, a power switch, a USB connector and an access detection loop; the input end of the voltage regulating loop is used for connecting a power supply, the output end of the voltage regulating loop is electrically connected with the input end of the power switch, the output end of the power switch is electrically connected with the input end of the USB connector, the control end of the access detection loop is electrically connected with the grounding end of the USB connector, the input end of the access detection loop is electrically connected with the power supply, the first output end of the access detection loop is electrically connected with the enabling end of the power switch, the second output end of the access detection loop is electrically connected with the enabling end of the voltage regulating loop, the USB connector is used for connecting electric equipment, and the problem that the existing equipment cannot be automatically charged when the USB electric equipment is accessed, cannot be automatically supplied to the USB electric equipment without starting a system and cannot generate energy loss when the USB electric equipment is pulled out after being fully charged is solved.
Description
Technical Field
The invention relates to the field of electronic power, in particular to an intelligent switching output power supply circuit and electronic equipment.
Background
The intelligent mobile terminal is popularized like a mobile phone and various handheld or mobile electronic devices, the experience requirement on charging use scenes is improved,
in a conventional notebook computer or complete machine system, either the above similar devices cannot be supported by the charging function after shutdown in the battery only mode (or the peripheral devices can be charged only after startup is needed, so that most of the battery energy is consumed by the startup operation of the machine), or an extra expensive scheme is required to support the charging function of the above similar devices after shutdown in the battery only mode, and when the to-be-charged device is not connected in the battery only shutdown mode, the notebook computer or complete machine system also has the phenomenon of loss and energy consumption.
In view of this, the present application is presented.
Disclosure of Invention
The invention discloses an intelligently switched output power supply circuit and electronic equipment, and aims to solve the problems that the existing notebook computer or complete machine system cannot supply power to USB electric equipment in a battery only shutdown mode, or the notebook computer or complete machine system battery only is in a shutdown mode, power supply is realized only after the USB electric equipment needs to be started up again for power supply, but extra unnecessary energy loss is caused, or the system can supply power to the USB equipment at any time after being shut down in a battery on l y power supply mode, but continuous energy loss is caused because an independent embedded controller of a mainboard is still electrified after the system is shut down.
A first embodiment of the present invention provides an intelligently switched output power supply circuit, including: the device comprises an enabling loop, a voltage regulating loop, a power switch, a USB connector and an access detection loop;
the input end of the voltage regulating loop is used for connecting a power supply, the output end of the voltage regulating loop is electrically connected with the input end of the power switch, the output end of the power switch is electrically connected with the input end of the USB connector, the control end of the access detection loop is electrically connected with the grounding end of the USB connector, the input end of the access detection loop is electrically connected with the power supply, the first output end of the access detection loop is electrically connected with the enabling end of the power switch, the second output end of the access detection loop is electrically connected with the enabling end of the voltage regulating loop, the USB connector is used for connecting electric equipment, the output end of the enabling loop is electrically connected with the enabling end of the voltage regulating loop, and the input end of the enabling loop is electrically connected with the output end of the controller;
the access detection circuit is configured to enable a control end of the power consumption equipment to be grounded when the power consumption equipment is accessed to the USB connector, and can control the voltage regulating circuit and the power switch to be in a working state so that the power supply charges the power consumption equipment;
the access detection loop is configured to control the voltage regulation loop and the power switch to be in an off state when the powered device is removed from the USB connector.
Preferably, the access detection loop comprises a voltage division circuit and a control circuit;
wherein, bleeder circuit's control end with the earthing terminal electrical connection of USB connector, bleeder circuit's input with power electrical connection, bleeder circuit's output with switch's enable end control circuit's control end electrical connection, control circuit's input with power electrical connection, control circuit's output with the enable end electrical connection in pressure regulating loop.
Preferably, the voltage dividing circuit is configured to provide a first voltage value to the power switch when the electric device is not connected, wherein the first voltage value can turn off the control circuit.
Preferably, the voltage dividing circuit is configured to provide a second voltage value to the power switch when the electrical device is switched in, where the second voltage value can be used to turn on the control circuit and can make the power switch in an operating state.
Preferably, the voltage dividing circuit includes a first resistor and a second resistor;
the first end of the first resistor is electrically connected with the power supply, the second end of the first resistor is grounded through the second resistor, the second end of the first resistor is electrically connected with the grounding end of the USB connector, the second end of the first resistor is electrically connected with the enabling end of the USB connector, and the second end of the first resistor is electrically connected with the control end of the control circuit.
Preferably, the control circuit includes: the first MOS tube is connected with the first resistor;
wherein, the G utmost point of first MOS pipe with bleeder circuit' S output electrical connection, the power passes through third resistance with the D utmost point electrical connection of first MOS pipe, the S utmost point ground connection of first MOS pipe, the D utmost point of first MOS pipe with the positive electrode electrical connection of first diode, the negative pole of first diode with the enable end electrical connection in pressure regulating return circuit, the negative pole of first diode passes through fourth resistance ground connection.
Preferably, the voltage regulating circuit includes: the voltage regulating circuit comprises a voltage regulating chip, a first capacitor, a second capacitor, a third capacitor, a first inductor, a fifth resistor and a sixth resistor;
wherein, the power with the input electrical connection of pressure regulating chip, the power passes through first electric capacity ground connection, the output of pressure regulating chip passes through the second electric capacity with the first end electrical connection of first inductance, the control foot of pressure regulating chip with the first end electrical connection of first inductance, the second end of first inductance passes through the fifth resistance with the feedback end electrical connection of pressure regulating chip, the feedback end of pressure regulating chip passes through sixth resistance ground connection, the second end of first inductance with switch's input electrical connection, the second end of first inductance passes through third electric capacity ground connection.
Preferably, the enabling circuit comprises: a second diode;
the anode of the second diode is electrically connected with the output end of the controller, and the cathode of the second diode is electrically connected with the enable end of the voltage regulating chip
A second embodiment of the present invention provides an electronic apparatus, including: the power supply, the controller and the output power supply circuit with intelligent switching are characterized in that the power supply is electrically connected with the input end of the voltage regulating loop and the input end of the access detection loop, and the output end of the controller is electrically connected with the input end of the enabling loop.
Based on the intelligently switched output power supply circuit and the electronic equipment provided by the invention, the voltage regulating loop is configured to regulate the power supply voltage to the voltage for charging the electric equipment, when the electric equipment is connected to the USB connector, the access detection loop outputs a control signal to the voltage regulating loop and the power switch to enable the electric equipment to be in a working state, so that the voltage regulating loop charges the electric equipment, when the electric equipment is removed from the USB connector, the access detection loop outputs a control signal to the voltage regulating loop and the power switch to enable the electric equipment to be in a turn-off state, so that the problem that the circuit consumes energy is avoided, the problem that the existing notebook computer or complete computer system cannot supply power to the USB electric equipment in a battery on y turn-off mode or the problem that the notebook computer or complete computer system can supply power to the USB electric equipment at any time and bring extra unnecessary energy loss after the USB electric equipment needs to be turned on again in a turn-off mode or the notebook computer or complete computer system battery on y is in a power supply mode, so that the system can supply power to the USB equipment at any time after the power from a power supply mode, but the problem that the embedded type independent energy loss of a mainboard is still caused by the power loss of the embedded controller after the system is still caused.
Drawings
Fig. 1 is a diagram illustrating an intelligently switched output power supply circuit according to a first embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, as 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 obtained by a person skilled in the art without inventive efforts based on the embodiments of the present invention, are within the scope of protection of the present invention.
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
The invention discloses an intelligently switched output power supply circuit and electronic equipment, and aims to solve the problems that the existing notebook computer, computer or complete machine system cannot supply power to USB electric equipment in a battery on ly shutdown mode, or the notebook computer, computer or complete machine system battery on ly is in a shutdown mode, power supply is realized only after the USB electric equipment needs to be started up again for power supply, and extra unnecessary energy loss is caused, or the system can supply power to the USB equipment at any time after being shut down in a power supply mode with the battery on ly, but continuous energy loss is caused by the fact that a mainboard independent embedded controller is still electrified after the system is shut down.
A first embodiment of the present invention provides an intelligently switched output power supply circuit, including: the device comprises an enabling loop, a voltage regulating loop 2, a power switch 3, a USB connector 4 and an access detection loop 1;
the input end of the voltage regulating loop 2 is used for connecting a power supply, the output end of the voltage regulating loop 2 is electrically connected with the input end of the power switch 3, the output end of the power switch 3 is electrically connected with the input end of the USB connector 4, the control end of the access detection loop 1 is electrically connected with the grounding end of the USB connector 4, the input end of the access detection loop 1 is electrically connected with the power supply, the first output end of the access detection loop 1 is electrically connected with the enabling end of the power switch 3, the second output end of the access detection loop 1 is electrically connected with the enabling end of the voltage regulating loop 2, the USB connector 4 is used for connecting electric equipment, the output end of the enabling loop is electrically connected with the enabling end of the voltage regulating loop, and the input end of the enabling loop is electrically connected with the output end of the controller;
the access detection circuit 1 is configured such that when the electrical equipment is accessed to the USB connector 4, a control terminal thereof is grounded, and the voltage regulation circuit 2 and the power switch 3 can be controlled to be in an operating state, so that the power supply charges the electrical equipment;
the access detection loop 1 is configured to control the voltage regulation loop 2 and the power switch 3 to be in an off state when the powered device is removed from the USB connector 4.
It should be noted that, the inventor found that, in some complete machines or notebook computers, a battery on ly mode is configured, that is, when the device is shut down, the device cannot supply power to the USB electric device, or because the battery on y of the notebook computer or the complete machine system is already in the shutdown mode, the power supply is realized only after the USB device needs to be powered on again, but an extra unnecessary energy loss problem is caused, or the system can supply power to the USB device at any time after the system is shut down from the battery on ly power supply mode, but the problem of continuous energy loss is caused by the fact that the independent embedded controller of the motherboard is still electrified after the system is shut down.
In this embodiment, the voltage regulation loop 2 is configured to regulate the supply voltage to a voltage for charging the consumer, wherein, the voltage regulating loop 2 can be a voltage boosting circuit, a voltage reducing circuit or a voltage reducing and boosting design, which may be configured according to actual situations, in this embodiment, when the electric device is connected to the USB connector 4, the access detection circuit 1 is sensed by the grounding terminal of the USB connector 4 (wherein, the grounding Pi n defined by the USB connector in this embodiment is not the grounding terminal in this embodiment, only the access detection circuit is accessed, and when the USB power device is accessed, the grounding electrical connection terminal is equivalent to the grounding electrical connection terminal after being connected by the shells of the male and female sockets), and outputs control signals to the voltage regulating loop 2 and the power switch 3 to enable the voltage regulating loop 2 to be in a working state, so that the voltage regulating loop 2 charges the electric equipment, when the power equipment is removed from the USB connector 4, the access detection circuit 1 outputs a control signal to the voltage regulation circuit 2 and the power switch 3 to enable the power equipment to be in an off state, energy consumption of the circuit is avoided, and the problem that power supply cannot be supplied to the USB power equipment for power supply of the existing notebook computer or complete machine system in a battery on l y off mode, or power supply is realized only after the USB power equipment needs to be powered on again because the battery on l y of the notebook computer or complete machine system is already in the off mode, but extra unnecessary energy loss is caused is solved, or the system can supply power to the USB equipment at any time after being powered off in a battery on l y power supply mode, but continuous energy loss is caused by the fact that a mainboard independent embedded controller is still electrified after the system is powered off.
It should be noted that, for the current-limiting control power switch 3 device with an external output of 5V in the conventional notebook computer or the complete computer of the circuit system, the design requirements of the standard USB2.0/USB3.0 are 5v0.5a/5v0.9a respectively due to different specification types or different design requirements, and the differentiated design may require an output specification of 5v1.5a or even higher. The power switch 3 outputs an effective enab e signal to the outside, and a low effective logic level control device is selected. According to design requirements, a high-effective logic level control device can be selected, and corresponding changes can be made to the corresponding circuit design.
It should be noted that the USB connector 4 is a USB2.0 or USB3.0 connector, and is herein ingeniously modified and differentiated based on the conventional design. Pi n4 of the USB connector 4 is usually directly connected to the PCBA motherboard network in the notebook or computer or circuit system complete design. In this embodiment, the connection to the ground network is discarded, and the access detection loop 1 is connected separately as an indication signal for accessing or removing an external USB device.
In a possible embodiment of the invention, the access detection loop 1 comprises a voltage division circuit 12 and a control circuit 11;
wherein, bleeder circuit 12's control end with USB connector 4's earthing terminal electrical connection, bleeder circuit 12's input with power electrical connection, bleeder circuit 12's output with switch 3's enable end the control end electrical connection of control circuit 11, control circuit 11's input with power electrical connection, control circuit 11's output with voltage regulation return circuit 2's enable end electrical connection.
The voltage divider circuit 12 is configured to provide a first voltage value to the power switch 3 when the electric device is not connected, where the first voltage value can turn off the control circuit 11.
It should be noted that, in this embodiment, the low level of the enable end of the power switch 3 is valid, that is, when the power-consuming device is not connected, the device P i n4 of the USB connector 4 is not directly connected to the ground, at this time, the voltage output by the voltage dividing circuit can make the enable end of the USB connector 4 in a high level state, and can make the control circuit 11 be turned on, so that the voltage regulating circuit 2 cannot receive a high level signal and is in an off state, where the high level of the voltage regulating chip of the voltage regulating circuit 2 is valid.
The voltage dividing circuit 12 is configured to provide a second voltage value to the power switch 3 when the electrical device is switched in, where the second voltage value can be used to turn on the control circuit 11 and can enable the power switch 3 to be in an operating state.
In this embodiment, when the electrical device is connected, the device P i n4 of the USB connector 4 is connected to the ground through the electrical device, and at this time, the enable terminal of the power switch 3 is pulled down to be in the working state, and the control loop is turned off, and the voltage regulating loop 2 is in the high level state when receiving the high level signal.
In one possible embodiment of the present invention, the voltage divider circuit 12 includes a first resistor R1, and a second resistor R2;
wherein, first resistance R1's first end with power electrical connection, first resistance R1's second end passes through second resistance R2 ground connection, first resistance R1's second end with USB connector 4's earthing terminal electrical connection, first resistance R1's second end with USB connector 4's enable end electrical connection, first resistance R1's second end with control circuit 11's control end electrical connection.
It should be noted that, the first resistor R1 and the second resistor R2 are voltage dividing resistors preset to divide a signal connected to the USB connector 4pi n4, where R1=10 × R2, and are configured to determine that the Gate voltage of the first MOS transistor Q1 in the control circuit 11 is: vgq2= + Vi n _ sys 10/11.
In one possible embodiment of the present invention, the control circuit 11 comprises: the transistor comprises a third resistor R3, a first MOS transistor Q1, a fourth resistor R4 and a first diode D1;
wherein, first MOS pipe Q1 ' S G utmost point with bleeder circuit 12 ' S output electrical connection, the power passes through third resistance R3 with first MOS pipe Q1 ' S D utmost point electrical connection, first MOS pipe Q1 ' S S utmost point ground connection, first MOS pipe Q1 ' S D utmost point with first diode D1 ' S anodal electrical connection, first diode D1 ' S negative pole with voltage regulation return circuit 2 ' S the end electrical connection that enables, first diode D1 ' S negative pole passes through fourth resistance R4 ground connection.
It should be noted that, when an external electric device (external USB charging demand device) is connected, the first MOS transistor Q1 is turned off, the enable end of the voltage regulating circuit 2 receives a high level signal, and starts to operate, and when the external electric device (external USB charging demand device) is removed, the first MOS transistor Q1 is turned on again, the enable end of the voltage regulating circuit 2 receives a low level signal, and the voltage regulating circuit 2 is turned off, so that energy consumption is reduced.
In one possible embodiment of the invention, the voltage regulation loop 2 comprises: the voltage regulating circuit comprises a voltage regulating chip, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first inductor L1, a fifth resistor R5 and a sixth resistor R6;
wherein, the power with the input electrical connection of pressure regulating chip, the power passes through first electric capacity C1 ground connection, the output of pressure regulating chip passes through second electric capacity C2 with first inductance L1's first end electrical connection, the control foot of pressure regulating chip with first inductance L1's first end electrical connection, first inductance L1's second end passes through fifth resistance R5 with the feedback end electrical connection of pressure regulating chip, the feedback end of pressure regulating chip passes through sixth resistance R6 ground connection, first inductance L1's second end with switch 3's input electrical connection, first inductance L1's second end passes through third electric capacity C3 ground connection.
It should be noted that the first capacitor C1 is an input filter energy storage capacitor, and the first inductor L1 and the third capacitor C3 are output filter energy storage functional devices.
The working principle of the scheme is briefly described as follows:
a) When the USB connector 4 is not connected to the corresponding USB charging demand device, the USB connector 4pi n4 is not directly connected to the ground, and the voltage values at this time are:
vgq2= + Vi n _ sys 10/11, the voltage level value is ensured to be larger than the level voltage value of the effective shutdown non-working enabling control signal, meanwhile, the D-level voltage value of the signal after the phase inversion processing through the first MOS tube Q1 is ensured to be smaller than the minimum input high effective level voltage value of the voltage regulating chip power supply enabling control signal, and the voltage regulating chip and other device function modules are in a shutdown zero power consumption state.
b) When the external USB charging requirement device is connected to the USB connector 4, the notebook computer or the circuit system complete machine design has Pi n4 of the USB connector 4 connected to the ground through the externally connected USB peripheral and the connector Pi n4 of the charging device, so as to pull down the voltage value at this time: vgq2 is close to or equal to 0V, so that the corresponding output effective control enab signals of the voltage regulating chip/power switch 3 are all in an asserted state, and 5V power supply voltage is normally output to the USB connector 4 for charging external equipment.
c) The repeated cycle switching of a) -b-a-8230, 8230can meet the design requirement of automatically switching the intelligent control output circuit of the USB connector 4 to supply power to the USB equipment without switching the whole computer of a notebook computer or a circuit system to a starting-up or normal working mode.
In one possible embodiment of the invention, the enabling loop comprises: a second diode D2;
the positive pole of the second diode D2 is electrically connected with the output end of the controller, and the negative pole of the second diode D2 is electrically connected with the enabling end of the voltage regulating chip.
It should be noted that, under the condition that the electronic device is turned on, if there is no USB plug but the system still needs the voltage regulating chip to work normally (other functional modules of the system also need to get UA 5), the voltage regulating chip may be activated by the second diode.
A second embodiment of the present invention provides an electronic device, including: the power supply and the output power supply circuit capable of intelligent switching are characterized in that the power supply is electrically connected with the input end of the voltage regulating circuit and the input end of the access detection circuit.
Based on the intelligently switched output power supply circuit and the electronic equipment provided by the invention, the voltage regulating circuit is configured to regulate the power supply voltage to the voltage for charging the electric equipment, when the electric equipment is connected to the USB connector, the access detection circuit outputs a control signal to the voltage regulating circuit and the power switch to enable the electric equipment to be in a working state, so that the voltage regulating circuit charges the electric equipment, when the electric equipment is removed from the USB connector, the access detection circuit outputs a control signal to the voltage regulating circuit and the power switch to enable the electric equipment to be in an off state, so that the problem that the circuit consumes energy is avoided, the problem that the power supply cannot be supplied to the USB electric equipment in the battery on l y shutdown mode of the conventional computer or notebook computer or whole computer system is solved, the problem that the power supply is realized only after the USB equipment needs to be powered on again in the shutdown mode, but the extra unnecessary energy loss is caused, or the problem that the embedded type continuous energy controller of the mainboard is still charged due to the power loss after the USB equipment needs to be powered on again after the power supply is powered on.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention.
Claims (9)
1. An intelligently switched output power supply circuit, comprising: the device comprises an enabling loop, a voltage regulating loop, a power switch, a USB connector and an access detection loop;
the input end of the voltage regulating loop is used for connecting a power supply, the output end of the voltage regulating loop is electrically connected with the input end of the power switch, the output end of the power switch is electrically connected with the input end of the USB connector, the control end of the access detection loop is electrically connected with the grounding end of the USB connector, the input end of the access detection loop is electrically connected with the power supply, the first output end of the access detection loop is electrically connected with the enabling end of the power switch, the second output end of the access detection loop is electrically connected with the enabling end of the voltage regulating loop, the USB connector is used for connecting electric equipment, the output end of the enabling loop is electrically connected with the enabling end of the voltage regulating loop, and the input end of the enabling loop is electrically connected with the output end of the controller;
the access detection circuit is configured to control a control end of the power consumption device to be grounded when the power consumption device is accessed to the USB connector, and can control the voltage regulation circuit and the power switch to be in a working state, so that the power supply charges the power consumption device;
the access detection circuit is configured to control the voltage regulation circuit and the power switch to be in an off state when the powered device is removed from the USB connector.
2. The intelligently switched output power supply circuit of claim 1, wherein said access detection loop includes a voltage divider circuit and a control circuit;
wherein, bleeder circuit's control end with the earthing terminal electrical connection of USB connector, bleeder circuit's input with power electrical connection, bleeder circuit's output with switch's enable end control circuit's control end electrical connection, control circuit's input with power electrical connection, control circuit's output with the enable end electrical connection in pressure regulating loop.
3. The intelligently switched output power supply circuit of claim 2, wherein the voltage divider circuit is configured to provide a first voltage value to the power switch when the powered device is not engaged, wherein the first voltage value is capable of turning off the control circuit.
4. The intelligently switched output power supply circuit of claim 3, wherein the voltage divider circuit is configured to provide a second voltage value to the power switch when the powered device is turned on, wherein the second voltage value is usable to turn on the control circuit and to place the power switch in an operational state.
5. An intelligent switching output power supply circuit according to claim 2, 3 or 4, wherein the voltage divider circuit comprises a first resistor and a second resistor;
the first end of the first resistor is electrically connected with the power supply, the second end of the first resistor is grounded through the second resistor, the second end of the first resistor is electrically connected with the grounding end of the USB connector, the second end of the first resistor is electrically connected with the enabling end of the USB connector, and the second end of the first resistor is electrically connected with the control end of the control circuit.
6. An intelligently switched output power supply circuit as claimed in claim 2, characterised in that the control circuit comprises: the first MOS tube is connected with the first resistor;
wherein, the G utmost point of first MOS pipe with bleeder circuit' S output electrical connection, the power passes through third resistance with the D utmost point electrical connection of first MOS pipe, the S utmost point ground connection of first MOS pipe, the D utmost point of first MOS pipe with the positive electrode electrical connection of first diode, the negative pole of first diode with the enable end electrical connection in pressure regulating return circuit, the negative pole of first diode passes through fourth resistance ground connection.
7. The intelligently switched output power supply circuit of claim 1, wherein said voltage regulation loop comprises: the voltage regulating circuit comprises a voltage regulating chip, a first capacitor, a second capacitor, a third capacitor, a first inductor, a fifth resistor and a sixth resistor;
wherein, the power with the input electrical connection of pressure regulating chip, the power passes through first electric capacity ground connection, the output of pressure regulating chip passes through the second electric capacity with the first end electrical connection of first inductance, the control foot of pressure regulating chip with the first end electrical connection of first inductance, the second end of first inductance passes through fifth resistance with the feedback end electrical connection of pressure regulating chip, the feedback end of pressure regulating chip passes through sixth resistance ground connection, the second end of first inductance with switch's input electrical connection, the second end of first inductance passes through third electric capacity ground connection.
8. The intelligently switched output power supply circuit of claim 7 wherein said enable loop comprises: a second diode;
the positive pole of the second diode is electrically connected with the output end of the controller, and the negative pole of the second diode is electrically connected with the enabling end of the voltage regulating chip.
9. An electronic device, comprising: the intelligent switching output power supply circuit comprises a power supply and a controller, wherein the controller is as claimed in any one of claims 1 to 8, the power supply is electrically connected with the input end of the voltage regulating loop and the input end of the access detection loop, and the output end of the controller is electrically connected with the input end of the enabling loop.
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| CN202211370322.6A CN115756133A (en) | 2022-11-03 | 2022-11-03 | Output power supply circuit and electronic equipment that intelligence switches |
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