EPC Announces a New 3-phase BLDC Motor Drive Inverter Using the EPC2065 EGaN® FET
EPC announces the availability of the EPC9167, a 3-phase BLDC motor drive inverter using the EPC2065 eGaN® FET. The EPC9167 GaN FETs operates from an input supply voltage between 14V and 60V (nominal 48V) and has two configurations – a standard unit and a high current version:
The EPC9167 standard reference design board is a 3-phase BLDC motor drive inverter board featuring the EPC2065 eGaN FET rated at 3.6mΩ maximum RDS(on), 80V maximum device voltage. This standard configuration uses single FETs for each switch position and can deliver up to 20 ARMS maximum output current.
A high current configuration, the EPC9167HC, version of the reference design uses two paralleled FETs per switch position with the ability to deliver up to 42 Apk (30 ARMS) maximum output current.
Both versions of the EPC9167 contain all the necessary critical function circuits to support a complete motor drive inverter including gate drivers, regulated auxiliary power rails for housekeeping supplies, voltage, and temperature sense, accurate current sense, and protection functions. The boards also feature the ST Microelectronics, STDRIVEG600, smart motor drive GaN half-bridge driver.
The EPC9167 boards measure just 130mm x 100mm (including connector). The boards can also be configured for multiphase DC–DC conversion and support both phase and leg shunt current sensing.
Major benefits of a GaN-based motor drive are exhibited with these reference design boards, including lower distortion for lower acoustic noise, lower current ripple for reduced magnetic loss, lower torque ripple for improved precision, and lower filtering for lower cost. The EPC9167 boards' lower weight and size enable incorporation of the drive into the motor housing and supports low inductance, higher power density motors.
EPC provides full demonstration kits, which include interface boards that connect the inverter board to the controller board development tool for fast prototyping that reduce design cycle times.
The default setting for the GaN-based motor drive kit is 100kHz switching frequency and 14ns deadtime. While the kit is designed to be programmed for different frequencies and deadtimes, operation at high frequency around 100kHz allows for the elimination of electrolytic capacitors and the use of lower capacitance, and reduce the motor losses. Operating the boards with very small low deadtime of around 14ns allows higher torque per ampere. The joint effect is to improve inverter and motor system efficiency of more than 7% vs. a silicon MOSFET solution which typically operates at 20kHz and 500ns deadtime.
"GaN-based inverters increase motor efficiency while reducing their cost and delivering the same performance as an expensive motor using a silicon MOSFET-based inverter", said Alex Lidow, CEO of EPC. “This enables motor systems that are smaller, lighter, less noisy, have more torque, more range, and greater precision.”
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本文由董慧转载自EPC，原文标题为:Premium Motor Drive Performance at Low Cost for e-bikes, Drones, and Robotics with GaN FETs from EPC，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。
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EPC提供评估板的选型：Default Configuration：IToF、Resonant Pulse DToF;VBUS (max)(V):12~160V;VINPUT(max)(V):5 V;Tpin(min)(ns):1 ns/2 ns
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产品型号
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品类
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Description
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VOUT(V)
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Featured Product
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VIN(V)
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IOUT (A)
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EPC9163
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评估板
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Synchronous, Buck or Boost, digital controller
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Buck: 5 - 16 V
Boost: 20-50 V
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EPC2218
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Buck: 20 – 60 V
Boost: 11.3 – 16 V
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140 A (Buck)
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选型表 - EPC 立即选型
EPC23102 ePower™ Stage GaN IC Shrink Motor Drives and Speed Time-to-Market for eMobility, Power Tools, Robotics, and Drones
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应用方案 发布时间 : 2022-10-18
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