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Anti-lock circuit of voltage regulator and its related power supply system

A technology for voltage regulators and power systems, applied in control/regulation systems, data processing power supplies, instruments, etc., can solve problems such as digital circuit 120 being unable to operate, voltage regulators being unable to generate output voltage Vout, etc.

Active Publication Date: 2019-03-12
FARADAY TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if the external voltage source Vcc reaches a stable fixed voltage at the time point t2, the voltage regulator 110 cannot generate the output voltage Vout, and the digital circuit 120 cannot operate, so that the power supply system 100 is in a locked state

Method used

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  • Anti-lock circuit of voltage regulator and its related power supply system
  • Anti-lock circuit of voltage regulator and its related power supply system
  • Anti-lock circuit of voltage regulator and its related power supply system

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Embodiment Construction

[0030] Please refer to figure 2 , which is shown as a schematic diagram of the power system of the present invention. The power system 200 includes a voltage regulator 210, an anti-deadlock circuit (anti-deadlock circuit) 230, and a digital circuit 220. Furthermore, the voltage regulator 210 and The anti-lock circuit 230 constitutes the voltage regulation system 205 .

[0031] The voltage regulator 210 is connected to the external voltage source Vcc, which can generate the output voltage Vout to the voltage supply terminal Vcck of the digital circuit 220, so that the digital circuit 220 receives the output voltage Vout and operates. In addition, the voltage regulator 210 generates a proportional voltage Vp to the anti-lockup circuit 230 . Wherein, there is a fixed proportional relationship between the proportional voltage Vp and the output voltage Vout.

[0032] The anti-lock circuit 230 is connected to an external voltage source Vcc, which receives the proportional voltage...

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Abstract

A power supply system, comprising: a voltage regulation system selectively generating an output voltage according to the power off signal; and a digital circuit connected to the voltage regulation system, wherein when the digital circuit stops operating, the power off signal is actuated; Wherein, when the external voltage source is turned on and changes to a fixed voltage, the voltage regulation system ignores the power-off signal and generates the output voltage; and, after the external voltage source reaches the fixed voltage, before the power-off signal is not turned off During operation, the voltage adjustment system generates the output voltage, and when the power-off signal operates, the voltage adjustment system stops generating the output voltage.

Description

technical field [0001] The present invention relates to a control circuit of a voltage regulator and its related circuit system, and in particular to an anti-deadlock control circuit applied to the voltage regulator and its related power supply system. Background technique [0002] Please refer to Figure 1A , which is a schematic diagram of a power system composed of an existing digital circuit and a voltage regulator. A voltage regulator 110 in the power system 100 is connected to an external voltage source Vcc, and can generate an output voltage Vout to a voltage supply terminal Vcck of a digital circuit (digital circuit) 120 . The digital circuit 120 can operate normally after receiving the output voltage Vout. [0003] In addition, the voltage regulator 110 has an enable terminal EN for receiving a power down signal (power down signal, PD) output by the digital circuit 120 . When the power-off signal PD is inactivated, the voltage regulator 110 is enabled to generate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/36
CPCH02M1/36H02M1/0012G06F1/26G06F1/32G05F1/56
Inventor 陈企扬
Owner FARADAY TECH CORP
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