Avago Technologies ACPL-224-500E - Manual (Page 52)

AV02-4387EN 49 Avago Technologies
Isolated Integrated Gate Driver for IGBT/MOSFET
Motor Control Applications
Description
The HCPL-3120 drives the IGBTs or
MOSFETs directly in this circuit and
provides full regulatory approved
isolation between the power and
control circuits. The output power
supply can be derived from rail to rail
supply by using a bootstrap circuit
illustrated in the “Inverter Design
using Gate Drive and Current Sense
Optocoupler” section. The value of
Rg in the above circuit is chosen to
control the peak gate charge and
discharge current as well as the
output power dissipation.
Performance of Circuit
• Peak output current of 2.0A im-
proves driving efficiency.
• Superior common mode tran-
sient noise immunity: 15 kV/ µs@
Vcm = 1500 V.
• Low Icc current and wide Vcc
range: 15 V - 30 V over -40°C to
100°C.
• Low V
OL
of 0.5 V eliminates the
need for negative Supply Voltage
(Vee).
• World wide regulatory approval.
• Fast under voltage lockout re-
sponse: 0.6 µs.
Alternative Avago Parts
1) HCPL-3150 0.5 Amp Isolated IGBT
Gate Driver
2) HCPL-3140 0.4 amp Isolated IGBT
Gate driver
3) HCPL-314J 0.4 Amp Dual IGBT
Gate Driver
4) HCPL-315J 0.5 Amp Dual IGBT
Gate Driver
5) HCPL-316J 2.0 Amp Isolated
Gate Driver with Integrated
Desaturation Detection and
Feedback.
1
2
CONTROL
INPUT
8
Rg
7
Q1
6
* RECOMMENDED SUPPLY VOLTAGES
5
3
4
+
–
+
–
74XXX
OPEN
COLLECTOR
+5 V
270 Ω
HCPL-3120
Vcc *
V EE
*
OPTIONAL
0.1 µF
Q2
A
+HVDC
–HVDC
3-PHASE
AC
SINGLE SUPPLY Vcc = +18V V EE = 0V
DUAL SUPPLY Vcc = +15V V EE = -5V
Rg =
V
CC
– V
EE
– V
OL
I
ON