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发明授权
CN103138541B 驱动变压器隔离自适应驱动电路 有权

驱动变压器隔离自适应驱动电路
摘要：
本发明公开了一种驱动变压器隔离自适应驱动电路，包括：电源、第一场效应管和第二场效应管，第一场效应管的漏极与电源的正极连接，源极与第二场效应管的漏极连接，第二场效应管的源极与电源的负极连接；驱动变压器，设有第一绕组和第二绕组；第一单向正电压快速驱动电路，一端与第一绕组连接，另一端与第一场效应管的栅极连接；第二单向正电压快速驱动电路，一端与第二绕组连接，另一端与第二场效应管的栅极连接；第一自适应死区控制子电路，用于根据第一场效应管的漏极与源极之间的电压Vds输出相应电平至其栅极；第二自适应死区控制子电路，用于根据第二场效应管的Vds输出相应电平至其栅极。
摘要（英）：

A drive transformer isolated-adaptive drive-circuit includes a power supply, a first MOSFET and a second MOSFET, the drain electrode of the first MOSFET coupled with the positive electrode of the power supply, and the source electrode of the first MOSFET coupled with the drain electrode of second MOSFET; the source of the second MOSFET coupled with the negative electrode of the power supply; a drive transformer having a first winding and a second winding; a first fast drive circuit, one end coupled with the first winding, the other end coupled with the first MOSFET; a second fast drive circuit, one end coupled with the second winding, the other end coupled with the second MOSFET; a first adaptive-dead-time control sub-circuit; and a second adaptive-dead-time control sub-circuit.

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