1CGD15FB45P Rev -
Six Channel SiC MOSFET Driver
Gate Driver for 1200V SiC MOSFET Power Module
Features
6 output channels
Isolated power supply
Direct mount low inductance design
Short circuit protection
Over temperature protection
Under voltage protection
For use with Cree Module
45mm, 6-pak modules.
Applications
6-pak Driver for 1.2kV, SiC MOSFET modules
DC Bus voltage up to 900VDC
Absolute Maximum Ratings
Symbol Parameter Value Unit Test Conditions
Note
Vs
Power Supply Voltage
16
V
Vs ramp rate >50V/sec
ViH
Input signal voltage HIGH
5
V
ViL
Input signal voltage LOW
0
V
IO.pk
Output peak current
9
A
IO.avg.ma
x
Ouput average current 2 A
FMax Max. Switching frequency 150 kHz Vg=+20/-5, Rg = 10
VDS
Max. Drain to source
voltage
1200
V
Visol
Input to output isolation
voltage
±1200
V
Top
Operating temperature
-25 to 70
ºC
Tstg
Storage temperature
-40 to 85
ºC
Characteristics
Symbol Parameter
Value
Unit Test Conditions Notes
Min
Typ
Max
VS Supply voltage 13.0 15.0 16.0 V
Vi Input signal voltage on/off 5/0 V
ISO Supply current (no load)
Supply current (switching)
330
420
mA
70C
830
1000
70C, 150khz
ViT+
Input threshold voltage HIGH
3.5
V
ViT-
Input threshold voltage LOW
1.5
V
Tdon
Turn on propogation delay
210
280
nS
Tdoff
Turn off propogation delay
225
295
nS
Terr
Pulse width for resetting fault
800
nS
W
Weight
300
g
MTBF Mean time between failure 1.5 10
6
h
Part Number Package Marking
CGD15FB45P PCBA CGD15FB45P Rev2
2CGD15FB45P Rev -
Driver Overview
Block Diagram
Note: Default gate resistor for Rg is 10 for gate ON and OFF. The user can control the gate turn ON and OFF
speed by changing Rg to a lower value and gain better MOSFET switching efficiency. The user can also control the
Gate turn-ON and OFF speed independently by populating Rg.off and D1. Cs is made up of 3x 2.2nF, 1.2kV film
capacitors.
3CGD15FB45P Rev -
X1 – 26 pos Signal connector (FCI p/n# 71918-126LF)
Fault Handling
Each of the six gate drive channels is protected by a desaturation circuit. In the event of a short circuit,
the voltage across the MOSFET (VDS) rises until it hits a threshold which causes the desaturation circuit
to drive all six gate drive channels to their off state. Pin 17 of the 26 pin main signal connector toggles
high when a desaturation event occurs. There will also be a red LED (L1-L6) illuminated for the gate
drive channel(s) that activated the desaturation protection. Once the fault is cleared, the circuit can be
reset with the onboard reset button or remotely by pulling pin 13 of the 26 pin ribbon connector to
common.
There is an overtemperature protection circuit that turns off all the gates in the event an overtemperature
is detected. The overtemperature circuit reads the value of the six pack module’s onboard NTC. When
the NTC reaches a value corresponding to 115C, the overtemperature circuit is activated and all six gate
drive channels are driven to their low state. Pin 19 of the 26 pin ribbon connector is toggled high when an
overtemperature fault occurs.
1
PWM_Upper_A (5V Logic)
2
COMMON
3
PWM_Lower_A (5V Logic)
4
5
PWM_Upper_B (5V Logic)
6
7
PWM_Lower_B (5V Logic)
8
9
PWM_Upper_C (5V Logic)
10
11
PWM_Lower_C (5V Logic)
12
13
/RST (normally hi)
14
15
RDY (normally hi)
16
17
DESAT FAULT (normally low)
18
19
OVER_TEMP_FLT (normally low)
20
21
PWR In (Vs)
22
23
24
25
26
LED Status Indicators
L1
RED led, illuminated when
Phase A upper switch has a
desat fault.
L2
RED led, illuminated when
Phase A lower switch has a
desat fault.
L3
RED led, illuminated when
Phase B upper switch has a
desat fault.
L4
RED led, illuminated when
Phase B lower switch has a
desat fault.
L5
RED led, illuminated when
Phase C upper switch has a
desat fault.
L6
RED led, illuminated when
Phase C lower switch has a
desat fault.
L7
GREEN led, illuminated when
power is present and all faults
are clear.
L8
RED led, illuminated when there
is an over temp fault.
4CGD15FB45P Rev -
Typical Application
5CGD15FB45P Rev -
Mechanical Instructions
Designed to directly mount to Cree 45 mm style power modules, the 6-ch gate driver also has several
other mounting holes to secure the assembly.
Attach the gate driver board to the power module via the 4x Module screw holes (see diagram below)
using the recommended hardware in Table 1. Then solder the 28x solder pins via the solder pin holes to
electrically connect the driver board to the power module. The solder must not exceed 260ºC and the
solder per pin must not exceed 10 seconds. The solder joints should be in accordance with IPC A 610
Rev D (or later) – Class 3 to ensure an optimal connection between the module and gate driver board.
The module plus driver board assembly must be further supported by securing the assembly to standoffs
via the 9x Mounting holes shown in the figure below.
Table 1 Hardware List
Ref
Description
Hardware
Locations
Torque
Module
screw holes
2.5mm clearance holes for mounting
screws to secure the module to the
printed circuit board assembly.
M2.5 x 4mm 4x 0.5 Nm
Mounting
holes
4.3mm clearance holes for screws to
secure the circuit assembly to stand-
offs for additional support.
6-32 x 5/6” Zinc Plated pan head
screw /w internal tooth washer. 9x 0.9 Nm
Access holes
10mm clearance hole to provide
access to the screw that secure the
module to the heatsink.
n/a 2x n/a
Solder pin
holes
1.6mm plated holes for solder pins
from power module.
Solder pins from power module 28x n/a
Power
terminals
5mm holes to secure power cables. * 7x
* Power terminal holes are sized to accept a PENN broaching nut (#P-KFS2-032). A 10-32, 6mm screw with a
captured lock washer should be used with this broaching nut.
6
This product has not been designed or tested for use in, and is not intended for use in, applications implanted into the human body
nor in applications in which failure of the product could lead to death, personal injury or property damage, including but not limited
to equipment used in the operation of nuclear facilities, life-support machines, cardiac debrillators or similar emergency medical
equipment, aircraft navigation or communication or control systems, air trafc control systems, or weapons systems.
Copyright © 2014 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree and the
Cree logo are registered trademarks and Z-REC and Z-FET are trademarks of Cree, Inc.
6CGD15FB45P Rev -
Cree, Inc.
4600 Silicon Drive
Durham, NC 27703
USA Tel: +1.919.313.5300
Fax: +1.919.313.5451
www.cree.com/power
Mechanical Drawing (units in Inches)
