X0116715 Rev.1.0
Page 3
Jan.12.21
ISL73033SLHEV1Z User Manual
1. Functional Description
The ISL73033SLHEV1Z evaluation board evaluates the performance of the ISL73033SLH. The driver operates
with a supply voltage from 4.5V to 13.2V and has both inverting (INB) and non-inverting (IN) inputs to satisfy
requirements for inverting and non-inverting logic drives with a single device.
The ISL73003SLHEV1Z evaluation board is configured as a common-source open drain 100V current sense load
switch with three on board 2512 sized 220m
Ω
resistors in parallel (73.3m
Ω
).
1.1
Quick Start Guide
1. Apply 4.5V to 13.2V across VDD (TP1) and SOURCE (TP2). Check for 4.5V on VDRV (P1).
2. Apply up to 80V across PVIN (BA1) and SOURCE (BA2).
3. Apply a 0V to 5V logic signal on IN (TP3) or INB (TP5). With 0V on IN, the drain of GaN FET is open; with 0V
on INB, the drain of GaN FET is shorted to source. With 5V on IN, the drain of GaN FET is shorted to source;
with 5V on INB, the drain of GaN FET is open.
Note:
Normally only IN input is used. There is a 0
Ω
resistor on R
2
that shorts INB to VSS. To use the INB input,
depopulate R
2
and place a 0
Ω
resistor on R
1
to short IN to VDD.
4. When the drain is shorted to source, the only current limiting established from PVIN to SOURCE are the three
0.22
Ω
2512 SMD resistors in parallel on R
3
through R
5
. Further current limiting may be necessary external to
the board.
