Invention Grant
- Patent Title: Adaptive gate drive circuit with temperature compensation
- Patent Title (中): 具有温度补偿的自适应栅极驱动电路
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Application No.: US13841703Application Date: 2013-03-15
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Publication No.: US08901989B2Publication Date: 2014-12-02
- Inventor: Narendra Singh Mehta , Lennart Karl-Axel Mathe
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Main IPC: H03K17/14
- IPC: H03K17/14 ; H03K17/06

Abstract:
An adaptive gate drive circuit that can generate a gate bias voltage with temperature compensation for a MOSFET is disclosed. The adaptive gate drive circuit may generate the gate bias voltage with variable drive capability to combat higher gate leakage current of the MOSFET at higher temperature. In one design, an apparatus includes a control circuit and a gate drive circuit. The control circuit generates at least one control signal having a variable frequency determined based on a sensed temperature of the MOSFET. For example, a clock divider ratio may be determined based on the sensed temperature of the MOSFET, an input clock signal may be divided based on the clock divider ratio to obtain a variable clock signal, and the control signal(s) may be generated based on the variable clock signal. The gate drive circuit generates a bias voltage for the MOSFET based on the control signal(s).
Public/Granted literature
- US20140028357A1 ADAPTIVE GATE DRIVE CIRCUIT WITH TEMPERATUARE COMPENSATION Public/Granted day:2014-01-30
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