Invention Grant
- Patent Title: Method to properly ramp current sharing
- Patent Title (中): 正确缓存电流共享的方法
-
Application No.: US12505495Application Date: 2009-07-19
-
Publication No.: US08487477B2Publication Date: 2013-07-16
- Inventor: Douglas E. Heineman
- Applicant: Douglas E. Heineman
- Applicant Address: US CA Milpitas
- Assignee: Intersil Americas Inc.
- Current Assignee: Intersil Americas Inc.
- Current Assignee Address: US CA Milpitas
- Agency: Meyertons Hood Kivlin Kowert & Goetzel, P.C.
- Agent Jeffrey C. Hood
- Main IPC: H02J1/00
- IPC: H02J1/00

Abstract:
A distributed power management system may include a communication bus and a plurality of POL (point-of-load) regulators coupled to the communication bus, and configured in a current sharing arrangement in which each POL regulator of the plurality of POL regulators has a respective output stage coupled to a common load and configured to generate a respective output current. Each POL regulator may have a respective phase in the current sharing configuration, and may transmit and receive information over the bus according to a bus communication protocol corresponding to the bus. The plurality of POL regulators may autonomously synchronize, to each other, a start time of their respective output voltage signal ramps by transmitting monitoring information to each other over the communication bus, while each of the POL regulators is ramping a duty cycle of a gate signal controlling a low-side field effect transistor of the output stage of the POL regulator according to a duty cycle of a gate signal controlling a high-side FET of the output stage of the POL regulator.
Public/Granted literature
- US20100013305A1 Method to Properly Ramp Current Sharing Public/Granted day:2010-01-21
Information query