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New Brushless DC Motor MCUs with 110V Gate-driver

20/12/2024

By including a fully integrated 110V N/N gate-driver, these new devices integrate a series of gate-drivers to meet different motor product voltage requirements. These new devices include a fully integrated 5V LDO and bootstrap diodes, reducing the need for external circuitry, as well as having under-voltage and short-circuit protection functions. These new 8-bit core BD66FM6746G / BD66FM6752G devices and 32-bit Arm® Cortex®-M0+ core HT32F65732G / HT32F65740G devices are suitable for use with 10~20 cell lithium batteries which see popular use in garden and power tools, 36V~72V pumps, fan products and many other application areas.

The 8-bit BD66FM6746G and BD66FM6752G MCUs include 4KW and 8KW of flash program memory respectively, 512B and 2KB of RAM Data Memory respectively and have an operating frequency of up to 20MHz.

The 32-bit HT32F65732G and HT32F65740G MCUs are designed for 1-shunt and 2-shunt FOC. These devices include 32KB and 64KB of flash memory respectively and 4KB and 8KB of SRAM respectively and have an operating frequency of up to 60MHz.

Main Features

BD66FM6746Gv100/BD66FM6752G
CPU Features:

  • Operating voltage
    - fSYS =32kHz~20MHz: 4.5V~5.5V
    - VCC =6V~20V
    - Maximum Motor Sustainable Voltage up to 110V
  • Up to 0.2μs instruction cycle with 20MHz system clock at VDD =5V
  • Power down and wake-up functions to reduce power consumption
  • Oscillator types:
    - Internal High Speed 20MHz RC – HIRC
    - Internal Low Speed 32kHz RC – LIRC

BD66FM6746Gv100/BD66FM6752G
Peripheral Features:

  • Flash Program Memory: 4K×16
  • RAM Data Memory: 512×8
  • True EEPROM Memory: 512×8
  • In Application Programming function – IAP
  • Watchdog Timer function
  • Up to 17 bidirectional I/O lines

Features: HT32F65732G / HT32F65740G
Core:

  • 32-bit Arm® Cortex®-M0+ processor core
  • Up to 60 MHz operating frequency
  • Single-cycle multiplication
  • Integrated Nested Vectored Interrupt Controller (NVIC)
  • 24-bit SysTick timer

On-Chip Memory:

  • 64 KB on-chip Flash memory for instruction/data and options storage
  • 8 KB on-chip SRAM
  • Supports multiple booting modes
Documents Tech question
Holtek New BLDC Motor MC Us

New Brushless DC Motor MCUs with 110V Gate-driver

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Applications & Markets

  • 11 Motor Control

    Motor Control

Technologies

  • Shutterstock 1632356350

    Microcontroller, microprocessors & memory ICs

Holtek

Holtek Semiconductor is a leading professional IC design house in Taiwan having its major business activities focused in the area of microcontroller and peripheral component design.

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Documents

  • Holtek HT32 F65740 G Datasheet v100
  • Holtek HT32 F65732 G Datasheet v100
  • Holtek BD66 FM6752 Gv100 Datasheet
  • Holtek BD66 FM6746 Gv100 Datasheet
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