15
CPWR-AN17, Rev -, 05-2016
Copyright © 2016 Cree, Inc. All rights reserved.
The information in this document is subject to change without notice.
Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.
ring or spade style connector with 1/4” width and a 10-32 screw. The control signals are
all contained on connector J10. The definition of J10 for each pin is shown in Table 3.
1
2
PWR IN (+12V)
3
4
COMMON
5
6
HIGH SIDE POWER GOOD, 5V=POWER GOOD, OV=POWER BAD
7
8
HIGH SIDE FAULT, 5V=NO FAULT, 0V=DESAT FAULT
9
10
HIGH SIDE RESET, PULL DOWN TO COMMON TO RESET FAULT
11
12
HIGH SIDE PWM INPUT, 5V=SWITCH ON, 0V=SWITCH OFF
13
14
LOW SIDE POWER GOOD, 5V=POWER GOOD, OV=POWER BAD
15
16
LOW SIDE FAULT, 5V=NO FAULT, 0V=DESAT FAULT
17
18
LOW SIDE RESET, PULL DOWN TO COMMON TO RESET FAULT
19
20
LOW SIDE PWM INPUT, 5V=SWITCH ON, 0V=SWITCH OFF
COMMON
Table 3. Pin definitions for connector J10
The heatsink fan is powered by 12VDC. The 12V fan can be powered from the same 12V
power supply that is powering the evaluation board.
5.
Switching loss measurement
This board is ideal for making double pulsed clamped inductive load switching measurements.
Figure 11 shows how the board should be connected to make the switching measurements.
Gate
Drive
J10
Q1
Q2
CON1
CON2
CON3,
CON4
HV
DC
L
C
BULK
J9
Current viewing
resistor
Figure 11. Clamped Inductive Switching Measurement Circuit
A precision current viewing resistor will be needed so that the current though Q1 can be measured.
There are provisions (J9) on the board for installing a through-hole current viewing resistor. The
board comes with a jumper in place. This jumper must be removed when adding a current viewing
resistor. T&M Research makes a viewing resistor (part #SDN-414-01) (Figure 12) that can be used
with this board. The resistor has a resistance of 10milliohms and therefore works with most
