ACPL-K34T Datasheet, PDF (1/15 Pages) AVAGO TECHNOLOGIES LIMITED – Automotive 2.5 A Peak High Output Current MOSFET Gate Drive Optocoupler with Rail-to-Rail Output Voltage in Stretched SO8

ACPL-K34T
Automotive 2.5 A Peak High Output Current MOSFET Gate Drive Optocoupler
with Rail-to-Rail Output Voltage in Stretched SO8
Data Sheet
Lead (Pb) Free
RoHS 6 fully
compliant
RoHS 6 fully compliant options available;
-xxxE denotes a lead-free product
Description
Avago's 2.5 Amp Automotive R²Coupler Gate Drive Op-
tocoupler contains an AlGaAs LED, which is optically cou-
pled to an integrated circuit with a power output stage.
The ACPL-K34T features fast propagation delay and tight
timing skew, is ideally designed for driving power MOS-
FETs used in AC-DC and DC-DC converters. The high oper-
ating voltage range of the output stage provides the drive
voltages required by gate controlled devices. The voltage
and high peak output current supplied by this optocou-
pler make it ideally suited for direct driving power MOS-
FETs at high frequency for high efficiency conversion.
Avago R²Coupler isolation products provide reinforced
insulation and reliability that delivers safe signal isolation
critical in automotive and high temperature industrial ap-
plications.
Functional Diagram
ANODE 1
8 VCC
NC 2
CATHODE 3
7 V_OUT
6 NC
NC 4
SHIELD
5 V_EE
Figure 1. ACPL-K34T Functional Diagram
Note: Minimum 1 µF bypass capacitor must be connected between pins
V_CC and V_EE.
Truth Table
LED
V_CC – V_EE
OFF
0 – 20V
V_OUT
LOW
ON
<V_UVLO-
LOW
ON
>V_UVLO+
HIGH
Features
• Qualified to AEC-Q100 Grade 1 Test Guidelines
• Automotive temperature range: -40 °C to 125 °C
• Peak output current: 2.0 A min.
• Rail-to-rail output voltage
• Propagation delay: 110 ns max.
• Dead time distortion: +50 ns/-40 ns
• LED current input drive with hysteresis
• Common Mode Rejection (CMR): 50 kV/µs min. at V_CM
= 1500 V
• Low supply current allow bootstrap half-bridge
topology: I_CC = 3.9 mA max.
• Under Voltage Lock-Out (UVLO) protection with
hysteresis for power MOSFET
• Wide operating V_CC range: 10 V to 20 V
• Safety Approvals:
- UL Recognized 5000 V_RMS for 1 min
- CSA
- IEC/EN/DIN EN 60747-5-5 V_IORM = 1140 V_peak
Applications
• Hybrid Power Train DC/DC Converter
• EV/PHEV Charger
• Automotive Isolated MOSFET Gate Drive
• AC and Brushless DC motor drives
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.