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Anti-deadlock circuit for voltage regulator and associated power system

A voltage regulator and voltage regulation technology, applied in control/regulation systems, data processing power supplies, instruments, etc., can solve problems such as the inability of the voltage regulator to generate the output voltage Vout and the inability of the digital circuit 120 to operate.

Active Publication Date: 2017-05-17
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-deadlock circuit for voltage regulator and associated power system
  • Anti-deadlock circuit for voltage regulator and associated power system
  • Anti-deadlock circuit for voltage regulator and associated power 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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PUM

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Abstract

A power system includes a voltage regulating system and a digital circuit, wherein the voltage regulating system selectively generates an output voltage according to a power down signal, the digital circuit is connected to the voltage regulating system, and when the digital circuit is not operated, the power down signal is activated. After the external voltage source is switched on and before a voltage of the external voltage source reaches a fixed voltage, the voltage regulating system ignores the power down signal and generates the output voltage. After the voltage of the external voltage source reaches the fixed voltage, the voltage regulating system generates the output voltage if the power down signal is inactivated, and the voltage regulating system stops generating the output voltage if the power down signal is activated.

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 Applications(China)
IPC IPC(8): H02M1/36
CPCH02M1/36H02M1/0012G06F1/26G06F1/32G05F1/56
Inventor 陈企扬
Owner FARADAY TECH CORP