基于A3120和A316组成逆变驱动电路
2009-03-14 20:29阅读：
云洋电子：www.sjzyunyang.com
我们经常在不同品牌的变频器、伺服器里见到由A3120和A316组成的逆变驱动电路。下面是本人根据某品牌变频器的IGBT驱动电路实物画出的电子线路图，以供兴趣者参考。
我们先来认识光耦：A3120 （ HCPL-3120 ）
Technical Data
• 2.0 A Minimum Peak Output Current
• 15 kV/ms Minimum Common Mode Rejection (CMR) at VCM = 1500
V
• 0.5 V Maximum Low Level Output Voltage (VOL) Eliminates Need for
Negative Gate Drive
• ICC = 5 mA Maximum Supply Current
• Under Voltage Lock-Out Protection (UVLO) with Hysteresis
• Wide Operating VCC Range: 15 to 30 Volts
• 500 ns Maximum Switching Speeds
• Industrial Temperature Range: -40°C to 100°C
• Safety Approval UL Recognized - 2500 V rms for 1 minute per
UL1577 CSA Approval VDE 0884 Approved with VIORM = 630 V peak
(Option 060 only)
• Industrial Inverters
• Switch Mode Power Supplies (SMPS)
Description
The HCPL-3120 consists of a GaAsP LED 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
ideallysuited for directly driving IGBTs with ratings up to 1200
V/100 A. For IGBTs with higher ratings, the HCPL-3120 can be used
to drive a discrete power stage which drives the IGBT gate.
Functional Diagram
Applications
• Isolated IGBT/MOSFET Gate Drive
• AC and Brushless DC Motor Drives
我们再来介绍A316J（HCPL-316J）
Technical Data
• Drive IGBTs up to IC = 150 A, VCE = 1200 V
• Optically Isolated, FAULT Status Feedback
• SO-16 Package
• CMOS/TTL Compatible
• 500 ns Max. Switching Speeds
• “Soft” IGBT Turn-off
• Integrated Fail-Safe IGBT Protection
– Desat (VCE) Detection
– Under Voltage Lock-Out
Protection (UVLO) with Hysterisis
• User Configurable: Inverting, Non-inverting, Auto-Reset,
Auto-Shutdown
• Wide Operating VCC Range: 15 to 30 Volts
• -40°C to +100°C Operating Temperature Range
• 15 kV/μs Min. Common Mode Rejection (CMR) at VCM = 1500 V
• Regulatory Approvals: UL, CSA, IEC/EN/DIN EN 60747- 5-2 (891
Vpeak Working Voltage)
Fault Protected IGBT Gate Drive
Typical Desaturation Protected Gate Drive Circuit,
Non-Inverting
Recommended Application Circuit
