Low power hysteretic buck-boost dc-dc controller

A buck-boost and controller technology, applied in the direction of control/regulation system, output power conversion device, DC power input conversion to DC power output, etc.

Pending Publication Date: 2019-05-07
RENESAS ELECTRONICS AMERICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A further problem arises when trying to accommodate such a range in a hysteretic controller, where the switching frequency needs to be adjusted internally without the use of an external or other clock signal

Method used

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Embodiment Construction

[0027] The present disclosure will now be described in detail with reference to the accompanying drawings, which are given as illustrative embodiments of the invention to enable those skilled in the art to practice the invention and understand its alternatives. It should be noted that the following figures and examples are not intended to limit the scope of the present invention to a single embodiment, but that other implementations are possible by substitution of some or all of the described or illustrated elements. In addition, in the case where some elements of the present invention can be partially or fully implemented using known components, only those necessary for understanding the present invention among such known components will be described, and detailed descriptions of other portions of such known components will be omitted. , so as not to obscure the invention. Embodiments described as implemented in software are not limited thereto, but may include embodiments im...

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Abstract

The present embodiments relate generally to power controllers, and more particularly to synthetic current hysteretic control of a buck-boost DC-DC controller. In one or more embodiments, a controllerincludes PFM-PWM and Buck-Boost transitions with minimal circuitry and power consumption.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application No. 62 / 578,988, filed October 30, 2017, the contents of which are hereby incorporated by reference in their entirety. technical field [0003] The present invention relates generally to power controllers, and more particularly to synthesized current hysteresis control for buck-boost DC-DC controllers. Background technique [0004] Voltage regulators used in some applications, such as IoT products, have very low power consumption requirements. Problems arise when this product has a range of input and output power differences, so a regulator for this product must be able to provide buck, boost, and buck-boost modes. A further problem arises when trying to accommodate such a range in a hysteretic controller, where the switching frequency needs to be adjusted internally without the use of an external or other clock signal. Therefore, solutions to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158H02M3/157
CPCH02M3/1582H02M3/157H02M1/0009H02M1/08H02M1/083H02M1/0025
Inventor 威利姆·弗兰西斯·鲁夫
Owner RENESAS ELECTRONICS AMERICA
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