An output voltage regulator device and method
A technology of output voltage and regulating devices, which is applied in the direction of output power conversion devices, regulating electric variables, control/regulating systems, etc., and can solve problems such as overshoot or overfall
Inactive Publication Date: 2019-02-19
HUAWEI TECH CO LTD
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[0005] The embodiment of the present application provides an output voltage regulation device and method, which are used to realize rapid voltage regulation and solve the problem of overshoot or overdrop in the process of output voltage regulation
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[0023] Embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.
[0024] The basic idea of the voltage regulation scheme in the embodiment of the present application is to add a voltage regulation circuit to the output voltage regulation device, and to fix the reference voltage V in the control circuit REF On the basis of constant, change the feedback voltage V in the control circuit through the voltage regulation circuit FB node current to achieve fast regulation of the output voltage V O , In this way, not only can the rapid adjustment of the output voltage be realized, but also the phenomenon of overshoot, over-drop or glitch in the process of output voltage adjustment can be suppressed, and the time from adjustment to stable voltage can be effectively shortened.
[0025] The embodiment of the present application can be applied to fast voltage regulation equipment related to DC to DC Converter (DC to DC Conve...
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The present application relates to the field of power management, and discloses an output voltage regulating device and method, which are used to realize rapid voltage regulation and suppress the phenomenon of overshoot or overshoot during output voltage regulation. The device includes a voltage regulation circuit, a control circuit, a power stage circuit, a filter network and a feedback network. The input end of the feedback network is connected to the output end of the filter network for collecting the output voltage VO of the filter network. The output end of the feedback network is connected to the control network. The feedback voltage node of the circuit is connected to output the feedback voltage to the feedback voltage node of the control circuit, and the output end of the voltage regulation circuit is connected between the output end of the feedback network and the feedback voltage node of the control circuit, and is used to adjust the voltage of the feedback voltage node. Current I; the output end of the control circuit is connected to the input end of the power stage circuit, and is used to adjust the output duty cycle of the filter network according to the current I of the feedback voltage node, and the filter network is used to filter the output duty cycle. The output voltage VO.
Description
technical field [0001] The embodiments of the present application relate to the field of power management, and in particular to an output voltage regulating device and method. Background technique [0002] In recent years, consumer electronic products such as smartphones and tablet computers have shown a trend of rapid development. Power Management IC (PMIC) is a power device used to manage the host system of consumer electronic products. PMIC has a high degree of integration , high conversion efficiency, low cost and other advantages. The integrated voltage modulator (Intergraded voltage regulator, IVR) is an important part of the PMIC. With the rapid upgrading of consumer electronic products, the requirements for IVR performance are getting higher and higher. In order to save system power consumption, it is necessary to adjust the output voltage of the IVR in real time, dynamically and quickly according to the load of the subsequent stage. [0003] In the prior art, the ...
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IPC IPC(8): G05F1/56
CPCG05F1/561H02M3/157H02M1/0025G05F1/575
Inventor 汪家轲陈亮邹鹏
Owner HUAWEI TECH CO LTD