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0.4 Amp Output Current IGBT
Gate Drive Optocoupler
Technical Data
HCPL-T251
Features
• Supply Current
(ICC): 11 mA (Max.)
• Supply Voltage
(VCC): 10-30 V
• Output Current
(IO): ± 0.4 A (Min.)
• Switching Time
(tPLH/tPHL): 1 µs (Max.)
• Isolation Voltage
(VISO): 3750 Vrms (Min.)
• UL 577 Recognized:
File No. E55361
• CSA Approved
• 10 kV/µs Minimum Common
Mode Rejection (CMR) at
Vcm = 600 V
• Creepage Distance: 7.4 mm.
Clearance: 7.1 mm.
Applications
• IGBT/MOSFET Gate Drive
• AC/Brushless DC Motor
Drives
• Industrial Inverters
• Switch Mode Power
Supplies
Description
The HCPL-T251 contains GaAsP
LED. The LED is optically
coupled to an integrated circuit
with a power output stage. This
optocoupler is ideally suited for
driving power IGBTs and
MOSFETs used in motor control
inverter applications. The high
operating voltage range of the
output stage provides the drive
voltages required by gate
controlled devices. The voltage
and current supplied by this
optocoupler makes it ideally
suited for directly driving small
or medium power IGBTs.
Ordering Information
Specify Part Number followed by
Option Number.
Functional Diagram
N/C 1
ANODE 2
CATHODE 3
N/C 4
SHIELD
8 VCC
7 VO
6 VO
5 VEE
Truth Table
LED Vout
OFF LOW
ON HIGH
Example:
HCPL-T251 #XXXX
No Option = Standard DIP Package, 50 per tube.
300 = Gull Wing Surface Mount Option,
50 per tube.
500 = Tape and Reel Packaging Option,
1000 per reel.
XXXE = Lead Free Option.
Remarks: The notation “#” is used for existing products, while (new)
products launched since 15th July 2001 and lead free option will use “-”
A 0.1 µF bypass capacitor must be connected between pins 5 and 8.
CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component
to prevent damage and/or degradation which may be induced by ESD.
