阅读说明：本技术 电源管理系统和电子设备 (Power management system and electronic device ) 是由 范团宝 孙宁波 时小山 王易 于 2020-03-23 设计创作，主要内容包括：本申请实施例提供了一种电源管理系统和电子设备,电源管理系统包直流-直流DC-DC转换电路、第一控制电路、补电电路、输入端口和输出端口；其中,输入端口用于接收输入电压；输出端口用于向负载提供输出电压；DC-DC转换电路,用于通过输入端口向输出端口充电以调节输出电压；第一控制电路,用于通过输出端口获取输出电压的第二反馈电压,基于第二反馈电压以及第二参考信号,生成第一控制信号,并向补电电路提供第一控制信号；补电电路,基于第一控制信号从输入端口向输出端口充电以补充调节输出电压。本申请所示的电源管理系统,可以在负载耗电激增时,快速响应负载以为其供电,有利于提高电子设备稳定性和电子设备的续航能力。(The embodiment of the application provides a power management system and electronic equipment, wherein the power management system comprises a direct current-direct current (DC-DC) conversion circuit, a first control circuit, a circuit supplementing circuit, an input port and an output port; the input port is used for receiving an input voltage; the output port is used for providing output voltage for a load; a DC-DC conversion circuit for charging the output port through the input port to regulate the output voltage; the first control circuit is used for acquiring a second feedback voltage of the output voltage through the output port, generating a first control signal based on the second feedback voltage and a second reference signal, and providing the first control signal for the power compensation circuit; and the power supplementing circuit is used for charging from the input port to the output port based on the first control signal so as to supplement and regulate the output voltage. The power management system disclosed by the application can rapidly respond to the load to supply power to the load when the power consumption of the load is increased rapidly, and is favorable for improving the stability of the electronic equipment and the cruising ability of the electronic equipment.)

A power management system is characterized by comprising a direct current-direct current (DC-DC) conversion circuit, a first control circuit, a compensation circuit, an input port and an output port; wherein the content of the first and second substances,

the input port is used for receiving an input voltage;

the output port is connected to a load and used for providing output voltage for the load;

the DC-DC conversion circuit is connected between the input port and the output port, and is used for acquiring a first feedback voltage reflecting the output voltage through the output port, and charging the output port through the input port to regulate the output voltage based on the first feedback voltage and a first reference signal;

the first control circuit is connected between the output port and the power supply circuit, and is used for acquiring a second feedback voltage of the output voltage through the output port, generating a first control signal based on the second feedback voltage and a second reference signal, and providing the first control signal to the power supply circuit;

the power supplementing circuit is connected between the input port and the output port and used for charging the output port from the input port based on the first control signal so as to supplement and regulate the output voltage.

The power management system of claim 1, wherein the first control circuit comprises a comparator for comparing the second feedback voltage with the second reference signal to obtain the first control signal.

The power management system of claim 2, wherein the comparator is a hysteresis comparator.

The power management system of claim 3, wherein the second reference signal comprises a plurality of threshold signals for hysteresis comparisons by the hysteresis comparator.

The power management system of any of claims 1-4, wherein the DC-DC conversion circuit comprises a second control circuit and at least one first power stage circuit;

the second control circuit is used for acquiring a first feedback voltage reflecting the output voltage through the output port and generating at least one second control signal based on the first feedback voltage and the first reference signal;

each of the at least one first power stage circuit comprises a first transistor, a second transistor, and an inductor, a first pole of the first transistor is connected to the input port, a second pole of the first transistor is connected to a first pole of the second transistor, a second pole of the second transistor is connected to a common ground, one end of the inductor is connected to a second pole of the first transistor, and the other end of the inductor is connected to the output port;

the first transistor is used for charging the output port from the input port through the inductor based on a second control signal corresponding to the first power stage circuit in the at least one second control signal;

the second transistor is used for charging the output port through the inductor based on the second control signal corresponding to the first power stage circuit.

The power management system of any of claims 1-5, wherein the complementary circuit comprises a third transistor;

a control electrode of the third transistor is configured to receive the first control signal, a first electrode of the third transistor is coupled to the input port, a second electrode of the third transistor is coupled to the output port, and the third transistor is configured to charge from the input port to the output port based on the first control signal.

The power management system according to any one of claims 1 to 5, wherein the complementary circuit comprises a third transistor, a fourth transistor and a capacitor;

a control electrode of the third transistor and a control electrode of the fourth transistor are respectively used for receiving the first control signal, a first electrode of the third transistor is connected to a second electrode of the fourth transistor, a second electrode of the third transistor is connected to the output port, and a first electrode of the fourth transistor is connected to the input port;

a first pole of the capacitor is connected to a first pole of the third transistor, and a second pole of the capacitor is connected to a common ground;

the fourth transistor is used for charging the capacitor from the input port based on the first control signal;

the third transistor is used for charging the output port from the capacitor based on the first control signal.

The power management system of claim 5, wherein the first transistor in a second power stage circuit of the at least one first power stage circuit is multiplexed by the second power stage circuit and the complementary circuit;

the first transistor in the second power stage circuit is specifically configured to charge the output port from the input port through the inductor based on the first control signal and the second control signal corresponding to the second power stage circuit.

The power management system of claim 8, wherein the second control circuit is further configured to: obtaining the first control signal, and generating a third control signal based on the first control signal and the second control signal corresponding to the second power stage circuit;

the first transistor in the second power stage circuit is specifically configured to charge the output port from the input port through the inductor based on the third control signal.

The power management system of claim 5, 8 or 9, wherein the second control circuit comprises an error amplifier, a signal modulator, and at least one driver;

the error amplifier amplifies an error between the first feedback voltage and the first reference signal to obtain an amplified signal;

the signal modulator is used for receiving the amplified signal and generating the at least one modulated signal;

each of the at least one driver is configured to receive the modulation signal and generate one of the at least one second control signal.

The power management system of any of claims 1-10, further comprising a reference signal conditioning circuit coupled between the first control circuit and the DC-DC conversion circuit;

the reference signal conditioning circuit is to: and adjusting the size of the first reference signal based on the first control signal, and providing the adjusted first reference signal to the DC-DC conversion circuit.

An electronic device comprising a power management system according to any one of claims 1-11.