原标题：TI TIDA-00366 10kW三相逆变器参考设计

　　TI公司的TIDA-00366是三相逆变器参考设计,采用隔离的双路IGBT栅极驱动器UCC21520,隔离的放大器AMC1301以及MCUTMS320F28027,200-690V AC驱动,额定功率高达10kW.具有较低的成本,和具有过载,短路,接地故障,欠压/过DC总线电压以及IGBT超温等保护功能.本文介绍隔离的放大器AMC1301主要特性,功能框图和应用电路,以及10kW三相逆变器参考设计TIDA-00366主要特性,框图,电路图,材料清单.

　　Reference Design for Reinforced Isolation 3-Phase Inverter with Current, Voltage and Temp Protection (PREVIEW) TIDA-00366

　　The AMC1301 device is a precision, isolated amplifier with an output separated from the input circuitry by an isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced galvanic isolation of up to 7 kVPEAK according to VDE V 0884-10 and UL1577. Used in conjunction with isolated power supplies, this device prevents noise currents on a high common-mode voltage line from entering the local ground and interfering with or damaging sensitive circuitry.

　　The input of the AMC1301 device is optimized for direct connection to shunt resistors or other low voltage-level signal sources. The excellent performance of the device supports accurate current control resulting in system-level power savings and, especially in motor control applications, lower torque ripple. The integrated common-mode overvoltage and missing high-side supply voltage detection features of the AMC1301 device simplify system-level design and diagnostics.

　　The AMC1301 device is fully specified over the extended industrial temperature range of –40℃ to +125℃ and is available in a wide-body 8-pin SOIC (DWV) package.

　　AMC1301主要特性:

　　±250-mV Input Voltage Range Optimized for Current Measurement Using Shunt Resistors

　　Low Offset Error and Drift: ±200 µV at 25℃, ± 3 µV/℃

　　Fixed Gain: 8.2

　　Very Low Gain Error and Drift: ±0.3% at 25℃, ± 50 ppm/℃

　　Very Low Nonlinearity and Drift: 0.03%, 1 ppm/℃

　　3.3-V Operation on High-Side and Low-Side

　　System-Level Diagnostic Features

　　Safety-Related Certifications:

　　7000-VPK Reinforced Isolation per DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12

　　5000-VRMS Isolation for 1 Minute per UL1577

　　CAN/CSA No. 5A-Component Acceptance Service Notice, IEC 60950-1, and IEC 60065 End Equipment Standards

　　Fully Specified Over the Extended Industrial Temperature Range

　　AMC1301应用:

　　Shunt-Resistor-Based Current Sensing In:

　　Motor Drives

　　Frequency Inverters

　　Uninterruptible Power Supplies

　　Isolated Voltage Sensing

　　图1. AMC1301功能框图

　　图2. AMC1301在频率反相器电流检测的应用框图

　　图3. AMC1301基于齐纳二极管的高边电源图

　　10kW三相逆变器参考设计TIDA-00366

　　The TIDA-00366 reference design provides a reference solution for 3-Phase inverter rated up to 10kW designed using reinforced isolated dual IGBT gate driver UCC21520, reinforced isolated amplifier AMC1301, and MCU(TMS320F28027). Lower system cost is achieved by using AMC1301 for motor current measurement interfaced with internal ADC of MCU and use of bootstrap power supply for IGBT gate drivers. The inverter is designed to have protection against overload, short circuit, ground fault, under/over DC bus voltage and IGBT module over-temperature.

　　图4.10kW三相逆变器参考设计TIDA-00366外形图

　　三相逆变器参考设计TIDA-00366主要特性:

　　Reinforced isolated inverter suited for 200-690V AC drives rated up to 10kW

　　Simple yet effective gate driver with 4A source, 6A sink output current capability

　　250kHz isolated amplifier for inverter current, DC link voltage and IGBT module temperature measurement - enables use of internal ADC of MCU

　　Uncalibrated current measurement accuracy of ±0.5% across temperature range from -25℃ to 85℃

　　Protection against DC bus under-voltage, over-voltage, over-current, ground fault and over-temperature

　　Bootstrap based power supply for high side gate driver reduces overall cost for power supply requirement

　　19ns (typical) propagation delay optimizes dead band distortion

　　三相逆变器参考设计TIDA-00366材料清单: