Hybrid analog/digital point-of-load controller

Patent metadata

Field	Value
Publication number	US-8947148-B2
Application number	US-201414162297-A
Country	US
Kind code	B2
Filing date	Jan 23, 2014
Priority date	Mar 15, 2013
Publication date	Feb 3, 2015
Grant date	Feb 3, 2015

Abstract

In one example, there is disclosed a hybrid analog-digital point-of-load controller (ADPOL) for use in a power supply. The ADPOL is configured to respond to transient current loads. In the presence of moderate current transients, power is clocked by a digital power core, which may be programmatically configured to adjust pulse width in response to the transient. In the presence of larger current transients, control may be passed to an analog transient compensator, which includes high-speed circuitry selecting between a very high-duty-cycle clock and a very low-duty-cycle clock, which will drive the transient back to the digital control domain.

First claim

What is claimed is:

1. A hybrid analog-digital point-of-load controller for regulating an output voltage comprising:
a programmable digital power core (DPC) configured to sense the output voltage, compare the output voltage to a reference voltage, and provide a DPC clock output;
an analog transient compensator (ATC) configured to sense the output voltage, and comprising:
a clock generator configured to generate a high-duty-cycle clock and a low-duty-cycle clock; and
a first s…

Assignees

• Analog Devices Technology

Inventors

• Atout Kareem

Classifications

• H03K3/011 Primary

  Electricity · mapped topic

• H02M3/157 Primary

  Electricity · mapped topic

• H02M1/008

  Electricity · mapped topic