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Voltage regulator having auto mode optimization for load profiles

A technology of voltage regulators and operating modes, which is applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., and can solve the problems of low efficiency of switching voltage regulators, etc.

Inactive Publication Date: 2018-03-27
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at lower loads, the efficiency of the switching voltage regulator may become smaller because the quiescent current of the circuit including the switching voltage regulator itself is a significant contributor to system losses

Method used

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  • Voltage regulator having auto mode optimization for load profiles
  • Voltage regulator having auto mode optimization for load profiles
  • Voltage regulator having auto mode optimization for load profiles

Examples

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Embodiment Construction

[0019] In the following description, for purposes of explanation, numerous examples and specific details are set forth in order to provide a thorough understanding of the present disclosure. However, it will be apparent to those skilled in the art that the present disclosure, as expressed in the claims, may include some or all of the features of these examples, alone or in combination with other features described below, and may also include features described herein Modifications and equivalents of and concepts.

[0020] figure 1 is shown according to the present disclosure configured to generate a regulated output voltage V at the output 110 out A high-level block diagram of a voltage regulator 100 to drive a load 12 . Voltage regulator 100 may include feedback / control stage 102 and output stage 104 . Feedback signal V can be provided from output 110 feedback And through the error amplifier 106 it is compared with the reference voltage V ref A comparison is made to gen...

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Abstract

Disclosed is a voltage regulator circuit configured to selectively operate the voltage regulator circuit in a first mode of operation and a second mode of operation. The voltage regulator can change operation of the voltage regulator circuit between the first mode of operation to the second mode of operation in response to a change in a sensed load condition of the voltage regulator circuit. The voltage regulator can change operation from the second mode of operation to the first mode of operation in response to the sensed load condition changing from the second load condition to the first load condition, but only when the sensed load condition has not changed in a given direction between the first load condition and the second load condition for at least a predetermined period of time T.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Patent Application No. 14 / 792,404, filed July 06, 2015, the entire contents of which are incorporated herein by reference in their entirety. Background technique [0003] Unless indicated to the contrary, the foregoing is not admitted to be prior art to the claims described herein and should not be interpreted as such. [0004] A voltage regulator provides a relatively constant DC output voltage, using circuitry to continuously maintain the output voltage at a given value regardless of changes in load current or input voltage. Linear voltage regulators operate by using a voltage-controlled current source to force a fixed voltage at the output terminals of the linear regulator. A switching voltage regulator uses two power switches to transfer energy from an input to an output via an inductor and a bulk capacitor. [0005] Switching voltage regulators are generally more efficient t...

Claims

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Application Information

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IPC IPC(8): H02M3/156
CPCH02M3/156Y02B70/10H02M1/0032H02M3/158
Inventor H·F·科尔勒托G·P·李M·H·科斯基T·萨顿
Owner QUALCOMM INC
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