Avago公司的ACPL-P343 (W343)是4A输出的 IGBT栅极驱动光耦合器,集成了一个AlGaAs LED, VCC工作电压15V-30V,工作温度-40℃ 到105℃,输出电压轨到轨,CMR大于35 kV/us,符合安全标准UL Recognized 3750/5000 VRMS for 1 min., CSA和IEC/EN/DIN EN 60747-5-2 VIORM = 891/1140 Vpeak.主要用在IGBT/MOSFET栅极驱动,AC和无刷DC马达驱动,再生能源逆变器,工业逆变器和开关电源.本文介绍了ACPL-P343/W343主要特性, 功能方框图,两种推荐的应用电路以及ACPL-P34X/W34X评估板主要特性,电路图和PCB元件布局图.
ACPL-P343 and ACPL-W343: 4.0 Amp Output Current IGBT Gate Drive Optocoupler with Rail-to-Rail Output Voltage in Stretched SO6
The ACPL-P343/W343 contains an AlGaAs LED, which 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 high peak output current supplied by this optocoupler make it ideally suited for direct driving IGBT with ratings up to 1200 V / 200 A. For IGBTs with higher ratings, this optocoupler can be used to drive a discrete power stage which drives the IGBT gate.
The ACPL-P343 and ACPL-W343 have the highest insulation voltage of VIORM = 891 Vpeak and VIORM = 1140 Vpeak respectively in the IEC/EN/DIN EN 60747-5-2.

ACPL-P343/W343主要特性:
4.0 A maximum peak output current
3.0 A minimum peak output current
Rail-to-rail output voltage
200 ns maximum propagation delay
100 ns maximum propagation delay difference
LED current input with hysteresis
35 kV/us minimum Common Mode Rejection (CMR) at VCM = 1500 V
ICC = 3.0 mA maximum supply current
Under Voltage Lock-Out protection (UVLO) with hysteresis
Wide operating VCC Range: 15 to 30 V
Industrial temperature range: -40℃ to 105℃
Safety Approval Pending
– UL Recognized 3750/5000 VRMS for 1 min.
– CSA
– IEC/EN/DIN EN 60747-5-2 VIORM = 891/1140 Vpeak

ACPL-P343/W343应用:
IGBT/MOSFET gate drive
AC and Brushless DC motor drives
Renewable energy inverters
Industrial inverters
Switching power supplies

图1.ACPL-P343/W343功能方框图

图2.ACPL-P343/W343推荐的应用电路图(1)

Recommended application circuit with split resistors LED drive

图3.ACPL-P343/W343推荐的高CMR驱动电路图

ACPL-P34X/W34X评估板
The ACPL-P34X/W34X evaluation board allows a powerinverter designer to easily test the drive, rail-to-rail and speed capability of the ACPL-P343/W343 gate drive optocoupler.
The evaluation board includes two separate gate drive channels (one optocoupler per channel) making it a half-bridge topology for driving directly the gates of high-side and low-side IGBTs of a power inverter (such as single-phase motor inverter or one phase of a 3-phase motor inverter). This evaluation board can also support ACPL-P341/W341 and ACPL-P340/W340.

ACPL-P34X/W34X评估板主要特性:
Half-Bridge topology
Footprints for bootstrap power supply confi guration
Works for IGBT TO-220 / TO-247 type
Able to evaluate the 4 A drive, rail-to-rail and speed performance
Footprints for PCB mounting terminal blocks for wire connections to motor
Split resistors network to achieve high CMR response
Example of good bypass capacitors layout
Supports ACPL-P341/W341 and ACPL-P340/W340

ACPL-P34X/W34X评估板应用:
Isolated IGBT/MOSFET Gate Drive
AC and Brushless DC Motor Drives
Industrial Inverters
Renewable Energy Inverters
Uninterruptible Power Supplies (UPS)

图4.ACPL-P34X/W34X评估板电路图(顶层)

图5.ACPL-P34X/W34X评估板电路图(低层)

图6.ACPL-P34X/W34X评估板PCB元件布局图