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Input power supply control circuit

A technology for controlling circuits and input power, applied to electrical components, output power conversion devices, etc., can solve the problems of increasing design complexity and occupying PCB space, so as to reduce occupied PCB space, ensure consistency, and reduce power-on impact The effect of current guarantee

Active Publication Date: 2015-12-30
ZHONGTIAN BROADBAND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an input power control circuit to solve the technical problems of adding an additional power supply module and a CPLD module, occupying PCB space, and increasing the complexity of the design

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 2 As shown, the input power control circuit of the present invention includes a power output module 1, a delay module 2, a power tracking signal generation module 3, a power tracking voltage conversion module 4 and a load chip 5;

[0041] Wherein the power output module 1: used to output the first power supply voltage as the basic power input of the delay module 2, the power tracking signal generation module 3 and the power tracking voltage conversion module 4;

[0042] Delay module 2: used to delay the output of the first power supply voltage by the power supply output module 1;

[0043] Power supply tracking signal generation module 3: used to control the power supply voltage rising slope of the output voltage of the power supply tracking voltage conversion module 4;

[0044]Power tracking voltage conversion module 4: for converting the first power supply voltage into a second power supply voltage according to the rising slope of the output signal of ...

Embodiment 2

[0050] On the basis of Embodiment 1, the power supply tracking voltage conversion module 4 is further specified:

[0051] Such as image 3 As shown, the power tracking voltage conversion module 4 includes a 3.3V to 1.025V power supply unit 41, a 3.3V to 1.035V power supply unit 42 and a 3.3V to 1.055V power supply unit 43;

[0052] The 3.3V power supply output module 1 is respectively connected with a 3.3V to 1.025V power supply unit 41, a 3.3V to 1.035V power supply unit 42 and a 3.3V to 1.055V power supply unit 43;

[0053] The power supply tracking signal generating module 3 is connected with the 3.3V to 1.025V power supply unit 41, the 3.3V to 1.035V power supply unit 42 and the 3.3V to 1.055V power supply unit 43 respectively;

[0054] Specifically, the three power tracking voltage conversion modules are all connected to the same following signal, so that the output voltages of the three power tracking voltage conversion modules have the same rising slope.

Embodiment 3

[0056] On the basis of Embodiment 1, the external power input signals of the power output module are power and return ground signals respectively, a resistor is connected in series between the output terminal of the power output module and the ground terminal, and the power output module outputs the first power supply voltage. The power output module adjusts the output first power voltage according to the first power voltage and the resistance connected to the output end of the power output module and the ground end.

[0057] The specific circuit structure is as Figure 4 As shown, the 3.3V power supply output module 1 is composed of a power supply module U1, a resistor R1, a resistor R2, an electrolytic capacitor C1 and an electrolytic capacitor C2; the Vin+ pin and the Vin- pin of the power module U1 are connected to an external power supply; the power supply The Vout+ pin of the module U1 is respectively connected to the SEN+ pin of the power module U1, the positive pole of...

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PUM

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Abstract

The invention discloses an input power supply control circuit which comprises a power supply output module, a time delay module, a power supply tracking signal generation module, a power supply tracking voltage conversion module and a loading chip, wherein the power supply output module is used for outputting a first power supply voltage; the time delay module is used for delaying outputting the first power supply voltage by the power supply output module; the power supply tracking signal generation module is used for controlling the rising slope of the power supply voltage of the output voltage of the power supply tracking voltage conversion module; the power supply tracking voltage conversion module is used for converting the first power supply voltage into a second power supply voltage according to the rising slope of an output signal of the power supply tracking signal generation module; the loading chip is used for simultaneously receiving the first power supply voltage output in a time delay manner and the converted second power supply voltage to be used as input voltages. With the adoption of the input power supply control circuit, the power supply of the chip is realized without additionally increasing a power module and a CPLD module, the space occupation of the PCB is reduced and the design complexity is reduced.

Description

technical field [0001] The invention relates to an input power control circuit. Background technique [0002] Many existing chips with high power consumption need to supply 4-way power supply: 3.3V, 1.025V, 1.035V and 1.055V; and there are high requirements for the power-on time and power-on sequence of the 4-way power supply, such as figure 1 Shown specifically as follows: [0003] 1. All four power supplies need to be powered on with a ramp, rising from zero voltage to the maximum voltage within 5ms; [0004] 2. The power-on sequence is to power on 3.3V first, and the other three power supplies are powered on at the same time with the same power-on slope. [0005] There are also technical solutions to solve the above technical problems in the prior art. The specific solution is: first select a 3.3V power supply module to generate a 3.3V power supply, and use this 3.3V power supply as a programmable logic device (CPLD, Complex ProgrammableLogicDevice) module, 1.025V power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/36
Inventor 王亦鸾
Owner ZHONGTIAN BROADBAND TECH