Power Electronics / Power Management


Isolated dual-channel gate driver

29 September 2021 Power Electronics / Power Management

onsemi’s NCP51561 is an isolated dual-channel gate driver with 4,5 A and 9 A source and sink peak current respectively. Designed for fast switching to drive power MOSFETs and SiC MOSFET power switches, the device offers short and matched propagation delays.

Two independent 5 kVrms internal galvanic isolation barriers from each input to the corresponding output, and internal functional isolation between the two output drivers, allow a working voltage of up to 1500 V d.c. This driver can be used in any possible configuration of two low-side, two high-side switches or a half-bridge driver with programmable dead time.

An ENA/DIS pin shuts down both outputs simultaneously when set low or high for ENABLE or DISABLE mode respectively. The NCP51561 offers other important protection functions such as independent under-voltage lockout for both gate drivers and a dead time adjustment function.


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