54-V, 1.5 kW, <99% Efficient, 70x69 mm2 power stage reference design for 3-phase BLDC drives TIDA-010056 (ACTIVE)

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Key Document

Description

This reference design demonstrates a 1.5-kW power stage for driving a three-phase brushless DC motor in cordless tools operating from a 15-cell Li-ion battery with a voltage up to 63-V. The design is a 70mm x 69mm compact drive, bringing 25-ARMS continuous current at 20-kHz switching frequency without heat sink and with natural convection, implementing sensorbased trapezoidal control. The design achieves optimized MOSFET switching loss and EMI by using a smart gate driver with optimized MOSFET and PCB. The design shows MOSFET operation within the safe operating area using enhanced protections including MOSFET over current and shoot-through protection by VDS monitoring, gate protection, switching voltage spike optimization with slew rate control and over temperature protection.

Features
  • Operates at voltage ranging from 9 V to 63 V (15s li-ion battery) delivering 25 ARMS continuous current, 400-A peak
  • 54 V/1.5 kW, 25 ARMS support without heat sink in a small 70mm x 69mm PCB form factor
  • More than 99% efficiency at 20 kHz trapezoidal control for 54 V/1.5 kW
  • MOSFET over current protection by VDS sensing with response time less than 1-µs with additional 4-µs deglitch time to eliminate false trips
  • Enhanced protection at MOSFET gate including VGS under-voltage, over-voltage, gate to source short circuit and open circuit protections

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TI Devices (6)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD19536KTT  100V, N ch NexFET MOSFET™, single D2PAK, 2.4mOhm  MOSFETs  Sample & Buy Not Available
DRV8350R  100-V Three-Phase Smart Gate Driver With Buck Regulator  Motor drivers  Sample & Buy View Design Kits & Evaluation Modules
INA180  26V current sense amplifier for cost-sensitive systems  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules
MSP430FR2355  24MHz 105C ULP Microcontroller With 32 KB FRAM, 4 KB SRAM, 44 IO, 12-bit ADC, 12-bit DACs, OpAmp/PGA  MSP430 ultra-low-power MCUs  Sample & Buy View Design Kits & Evaluation Modules
TMP235  ±2.5°C Analog output temperature sensor, with 10mV /°C gain  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules
TPS709  150-mA 30-V ultra-low-Iq wide-input low-dropout (LDO) regulator with reverse current protection  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD19536KTT Download -
DRV8350R Download Download
INA180 Download -
Download
MSP430FR2355 Download Download
Download Download
Download Download
Download Download
TMP235 Download
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TPS709 Download
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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 8882 13 Jun 2019
Design files (6)
Title Type Size (KB) Date
ZIP 409 13 Jun 2019
ZIP 4526 13 Jun 2019
PDF 1816 13 Jun 2019
PDF 295 13 Jun 2019
PDF 299 13 Jun 2019
PDF 443 13 Jun 2019
Related Tools & Software

Software (1)



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