ROHMRegister with ROHMnet

News at ROHM Semiconductor

News: Go to>   Current | Library

High-efficiency DC Input H-bridge PWM Drivers

01.29.07

ROHM Co., Ltd. completed the development of the BD6221 H-bridge driver LSI for brush-commutated motors featuring low power consumption for high-efficiency motor driving.

ROHM’s new H-bridge driver LSI series incorporates a new VREF variable system for driving brush-commutated motors with low power consumption without changing the input voltage level. This simplifies replacement while providing optimum motor drive operation with minimal design changes. ROHM’s entire series of H-bridge drivers support a wide range of supply voltages (3V to 36V) and output currents (up to 2A) and achieves lower circuit current under no load conditions — 1/10-1/20 that of conventional LSIs. In addition, power-saving circuit is integrated to suppress standby current, contributing to energy efficient circuit design.

Applications:

  • Audio/visual (AV) equipment
  • PC peripheral devices
  • Office (OA) equipment
  • Home electrical appliances

BD6221F Features:

  • Incorporates a new VREF variable system for high efficiency operation with low power consumption. Part replacement is simplified as well.
  • Allows direct PWM control, and the optimized circuit ensures high-speed response and enables PWM duty control.
  • Low standby current (0µA) under motor stop condition.
  • Integrates a shoot-through prevention circuit.
  • Equipped with output protection circuits for overcurrent, overvoltage, overheating, and under-voltage lock out.
  • Supports TTL input.
  • MOSFET on the output stage can achieve small number of external components.
  • Wide operating temperature range: -40°C to +85°C.

About ROHM:

ROHM is the industry leader in system LSI, discrete components and module products, utilizing the latest in semiconductor technology. ROHM's proprietary production system, which includes some of the most advanced automation technology, is a major factor in keeping it at the forefront of the electronic component manufacturing industry. In addition to its development of electronic components, ROHM has also developed its own production system so that it can focus on specific aspects of customized product development. ROHM employs highly skilled engineers with expertise in all aspects of design, development and production. This allows ROHM the flexibility to take on a wide range of applications and projects and the capability to serve valuable clients in the automotive, telecommunication and computer sectors as well as consumer OEMs.