Software
Firmware
TIDA-01485
36-V, 1-kW, 99% Efficient, 18-cm2 Power Stage Reference Design for Three-Phase BLDC Motors
TIDA-01485
Overview
This 1kW power stage reference design achieves 99% efficiency for a three-phase, 36V brushless DC (BLDC) motor used in industrial applications such as power tools that operate from a 10-cell Li-ion battery. The design demonstrates the smallest inverter power stage for this power levels, implementing sensorbased trapezoidal control and supports 25ARMS continuous (60A peak for 2 seconds, 100A peak for 400 milliseconds) winding current. The design’s MOSFET power block and current controlled gate driver helps clean MOSFET switching and lowest EMI due to slew rate control and low parasitic inductance.
Features
- Operates at voltage ranging from 6V to 42V (10s li-ion battery) delivering 25ARMS continuous (60A peak for 2s, 100A peak for 400ms, 400A for 10ms) motor winding current
- 36V/700W, 18ARMS support without heat sink in a small 50mm x 36mm PCB form factor
- MOSFET current monitoring and overcurrent protection by VDS sensing with response time less than 1µs
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDUDE5.PDF (6315 K)
Reference design overview and verified performance test data
TIDRSH3.PDF (902 K)
Detailed schematic diagram for design layout and components
TIDRSH4.PDF (102 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRSH5.PDF (202 K)
Detailed overview of design layout for component placement
TIDRSH7.ZIP (2709 K)
Files used for 3D models or 2D drawings of IC components
TIDCDS4.ZIP (1572 K)
Design file that contains information on physical board layer of design PCB
TIDRSH6.PDF (1582 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
MOSFETs
CSD88599Q5DC — 60-V, N channel synchronous buck NexFET™ power MOSFET, SON 5 mm x 6 mm Dual-Cool™ power block, 40 A
Data sheet: PDF | HTMLMSP430 microcontrollers
MSP430F5132 — 25 MHz MCU with 8KB Flash, 1KB SRAM, 10-bit ADC, comparator, DMA, 16-bit High Resolution timer
Data sheet: PDF | HTMLStart development
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | 36-V/1-kW, 99% Efficient, 18-cm2 Power Stage Ref Design for 3-Phase BLDC Motors | Aug. 30, 2017 |
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