ON Semiconductor NCP51705SMDGEVB User Manual

NCP51705SMDGEVB
NCP51705 Mini SMD
Evaluation Board
User's Manual
NCP51705 SiC Driver SMD Evaluation
Board for Existing or New PCB Designs
Purpose
This document describes the use and applications for the NCP51705
SiC driver mini SMD EVB. The EVB is designed on a four layer PCB
and includes the NCP51705 driver and all the necessary drive
circuitry. The EVB also includes an on−board digital isolator and the
ability to solder any MOSFET or SiC MOSFET in a TO−247 high
voltage package. The EVB does not include a power stage and is
generic from the point of view that it is not dedicated to any particular
topology. It can be used in any low−side or high−side power switching
application. For bridge configurations two or more of these EVBs can
be configured in a totem pole type drive configuration. The EVB can
be considered as an isolator+driver+TO−247 discrete module.
NCP51705 Description
The NCP51705 driver is designed to primarily drive SiC MOSFET
transistors. To achieve the lowest possible conduction losses, the
driver is capable of delivering the maximum allowable gate voltage to
the SiC MOSFET device. By providing high peak current during
turn−on and turn−off, switching losses are also minimized. For
improved reliability, dv/dt immunity and even faster turn−off, the
NCP51705 can utilize its on−board charge pump to generate a user
selectable negative voltage rail. For full compatibility and to minimize
the complexity of the bias solution in isolated gate drive applications
the NCP51705 also provides an externally accessible 5 V rail to power
the secondary side of digital or high speed optical isolators. The
NCP51705 offers important protection functions such as
under−voltage lockout monitoring for the bias power and thermal
shutdown based on the junction temperature of the driver circuit.
Internal simplify block diagram can be seen in Figure 2. More detailed
information about all blocks could can be found in datasheet.
© Semiconductor Components Industries, LLC, 2018
April, 2019 − Rev. 2
EVAL BOARD USER'S MANUAL
Figure 1. Evaluation Board Photo
1
www.onsemi.com
Publication Order Number:
EVBUM2590/D