Product category:
Power Supply ICs and Controllers
News Release from: Atmel Corporation | Subject: ATA6831
Edited by the Electronicstalk Editorial
Team on 10 January 2007
PWM driver promises smooth DC motor
control
Driver IC is designed to control two DC motors or up to three different loads in automotive and industrial applications such as flap control for a cash dispenser.
Atmel Corp has announced the availability of the ATA6831 driver IC with enhanced PWM performance for smooth DC motor control with reduced noise The ATA6831 is designed to control, via a microcontroller, two DC motors or up to three different loads in automotive and industrial applications such as flap control for a cash dispenser
This article was originally published on Electronicstalk on 18 Nov 2005 at 8.00am (UK)
Related stories
Smart MCU aims for point-of-sale control
The AT91SAM9261 smart ARM microcontroller (SAM) is based on the ARM926EJ-S processor and is billed as the industry's first ultra-low-power deterministic microcontroller.
Controller maintains automotive system safety
With its built-in driver functions and complete monitoring system, the ATA6814 is a unique solution beneficial for all safety-relevant automotive electronics.
Thanks to the device's high voltage capability (up to 40V), the ATA6831 can also be used in 24V-supplied truck applications.
As the device is manufactured using Atmel's high-voltage BCD-on-SOI technology (Smartis), the IC provides a broad range of protection features and a very attractive price.
The small, low-cost ATA6831 is a fully protected, triple half-bridge driver with integrated power stages.
Further reading
Tiny Flash MCUs promise frugal performance
Atmel Corporation has announced three new members of the AVR Flash microcontroller family, targeting battery chargers, sensor end-points and low-end motor control applications.
8bit microcontrollers make more of CAN systems
Two new 8bit AVR Flash microcontrollers feature extended Controller Area Network capabilities.
Each of the three high-side and three low-side drivers are capable of driving currents up to 1.0A.
The ATA6831 supports the application of H-bridges to drive DC motors.
The device's PWM functionality allows smooth motor control: With an enhanced PWM frequency of up to 25kHz, which is outside the human acoustic range, the DC motor control is carried out without any audible noise caused by the PWM signal.
The reverse, brake, and high impedance operation modes are controlled by the SPI interface.
The ATA6831 provides several protection features such as overtemperature warning and shutdown, overload, overvoltage protection, and full protection against short circuits.
Several diagnostic bits are set in the SPI output register and can be read by the microcontroller.
In case of undervoltage at the supply pin, the power-supply fail bit in the output register is set and all outputs are disabled.
If the overtemperature prewarning bit is set, the system developer can implement software routines on the microcontroller to decrease the power dissipation and temperature.
Further temperature increases beyond a certain level will cause the IC to shut down to prevent destruction.
The device also meets strict automotive qualification demands (protection against conducted interference, EMC and ESD protection) and can withstand transients as specified in ISO/TR 7637.
Samples of the ATA6831 driver IC are available now in Pb-free QFN18 packages with pricing starting at US $0.99 for 10,000-piece quantities.
An application board for development support can be ordered for US $131.
For applications with ambient temperatures of up to 150C, the high-temperature derivative ATA6832 is available.
• Atmel Corporation: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
