Invention Grant
- Patent Title: Multi-phase power block for a switching regulator for use with a single-phase PWM controller
- Patent Title (中): 用于单相PWM控制器的开关稳压器的多相功率块
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Application No.: US13434708Application Date: 2012-03-29
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Publication No.: US08878501B2Publication Date: 2014-11-04
- Inventor: Nitin Kalje , Mansour Izadinia
- Applicant: Nitin Kalje , Mansour Izadinia
- Applicant Address: US CA San Jose
- Assignee: Micrel, Inc.
- Current Assignee: Micrel, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Van Pelt, Yi & James LLP
- Main IPC: G05F1/59
- IPC: G05F1/59 ; H02J1/10 ; H02M3/158

Abstract:
A multi-phase power block for a switching regulator includes a phase control circuit, N power cells and a current sharing control circuit. The phase control circuit is configured to receive a single phase PWM clock signal and generate N clock signals in N phases. Each of the N power cells includes a pair of power switches, gate drivers, a control circuit receiving one of the N clock signals and generating gate drive signals for the gate drivers, and an inductor. The current sharing control circuit is configured to assess the inductor current at the inductor of the N power cells and to generate duty cycle control signals for the N power cells. The duty cycle control signals are applied to the control circuits to adjust the duty cycle of one or more clock signals supplied to the power cells to balance a current loading among the N power cells.
Public/Granted literature
- US20130057239A1 Multi-Phase Power Block For a Switching Regulator for use with a Single-Phase PWM Controller Public/Granted day:2013-03-07
Information query
IPC分类: