Toshiba Launches H Bridge Driver IC for Low-Voltage 2.5V Drive

TOKYO — (BUSINESS WIRE) — April 18, 2017Toshiba Corporation's (TOKYO: 6502) Storage & Electronic Devices Solutions Company today announced the launch of “TC78H630FNG,” “TC78H621FNG,” and “TC78H611FNG,” additions to its line-up of H bridge[1] driver ICs for DC brushed motors and stepping motors used in the mobile battery-drive equipment, home appliances, and housing and facility equipment. Sample shipments* start today with mass production scheduled for end of July.

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Toshiba: "TC78H630FNG," "TC78H621FNG," and "TC78H611FNG," additions to its line-up of H bridge drive ...

Toshiba: "TC78H630FNG," "TC78H621FNG," and "TC78H611FNG," additions to its line-up of H bridge driver ICs for DC brushed motors and stepping motors. (Photo: Business Wire)

TC78H630FNG has one H bridge with a 2A rating and is suitable for the large current drive of DC brushed motors. Additionally, making on-resistance[2] 0.4Ω (sum of upper and lower: typ.) in the motor driver output block allows the IC to realize a large current drive for motors.

TC78H621FNG and TC78H611FNG have two H bridges with 1A ratings, and are suitable for driving bipolar stepping motors or two DC brushed motors.

This series supports 2.5V to 15V power supply for driving motors, and diverse applications include mobile devices (cameras and small printers) with a 3.7V lithium-ion battery, home appliances with 5V or 12V power supply (refrigerators and air-conditioners), and housing and facility equipment (smart meters, hot-water supply machines, water supply valves of water service, and electronic locks).

Main Features of New Products

  • Abnormality detection functions (over current detection, thermal shutdown circuit, and under voltage lockout circuit) improve safety in driving the motor.
  • Consumption current of approximately 0μA (typ.) in standby mode (in case of motor stop) is realized.
  • Shoot-through current protection is incorporated. The motor can be controlled without considering the dead time in switching output ON and OFF.
 

Main Specifications

 
Part No.   TC78H630FNG   TC78H621FNG   TC78H611FNG

Features

Suitable for large
current drive of DC
brushed motor

 

Suitable for driving
stepping motors

 

Suitable for driving 2
DC brushed motors

Power
supply
voltage
(operating
range)

Power supply for motor drive: 2.5 to 15V
Logic power supply: 2.7 to 5.5V

Output
current
(Absolute
maximum
ratings)


2.1 A


1.1 A


1.1 A

Number of
H bridge
Channels

1ch 2ch 2ch

 

Drive
motor

- DC brushed motor
Compatible with
brake mode

- Stepping motor

Full step:
Controllable 3-ports

Half step:
Controllable 4-ports

- DC brushed motor

- Stepping motor

Full step:
Controllable 4-ports

Half step:
Controllable 4-ports

- DC brushed motor
Compatible with
brake mode

Output ON
resistance
(Sum of
Upper and
Lower)


0.4 Ω (typ.)

 


0.8 Ω (typ.)

 


0.8 Ω (typ.)

Safety
function

Over current detection
Thermal shutdown
Under voltage lockout

Shoot-through current protection

Package   TSSOP16
  • Note 1: A circuit formed by aligning transistors in an H form. Used to drive DC brushed motors and stepping motors with forward and reverse control.
  • Note 2: Resistance when current flows. The lower values enable low dissipations for driving motors and reducing a heat generation.

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