Product category: Power Supply ICs and Controllers
News Release from: Allegro MicroSystems Europe | Subject: A3935
Edited by the Electronicstalk Editorial Team on 31 October 2002
MOSFET controller drives automotive power
The A3935 power MOSFET controller is designed specifically for automotive applications involving the control of high-power motors
The new A3935 power mosfet controller IC from Allegro MicroSystems is designed specifically for automotive applications involving the control of high-power motors. The A3935 provides six high-current gate-drive outputs capable of driving a wide range of power N-channel mosfets. A requirement of automotive systems is steady operation over a varying battery input range, and this is achieved in the A3935 by an integral pulse-frequency-modulated boost convertor which creates a constant supply voltage for driving the external mosfets.
This article was originally published on Electronicstalk on 31 October 2002 at 8.00am (UK)
Related stories
Two motor drivers come together
Single IC provides simultaneous drive for both a DC motor and stepper motor
Switch interface needs no sense resistor
Dual-channel switch interface IC aims to simplify the implementation of two-wire Hall-effect sensor systems in automotive applications
Bootstrap capacitors are utilised to provide the supply voltage required for N-channel mosfets, which is higher than the normal automotive battery supply.
An internal low-dropout regulator is used for the gate-drive supply.
Direct control of each gate output is possible via six TTL-compatible inputs.
A differential amplifier is integrated to allow accurate measurement of the current in the three-phase bridge.
A diagnostic output can be continuously monitored to protect the driver from short-to-battery, short-to-supply, bridge-open, and battery under/overvoltage conditions.
Additional protection features include dead time, drive undervoltage and thermal shutdown.
The A3935 is available in PQCC-44 and SOIC-38 packages, and has an operating temperature range of -40 to +125C.
(This was Electronicstalk's Top Story on 31 October 2002)
• Allegro MicroSystems Europe: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• NEW
• Electronicstalk Home Page
Related Business News
Applications/Solutions
High-performance analog ICs provide efficient, compact and dependable solutions for engine management systems, body electronics and comfort systems.
Taiwan stocks end down in biggest...
...drop in over 1 yr. Taipei, July 27 (Reuters) - Taiwan shares fell 4.22 percent on Friday to their lowest close in three weeks, marking their largest one-day percentage drop in more than a year, after a sell-off on Wall Street hurt big exporters such as TSMC .
Nippon Oil Aug refining seen flat, eyes Sudan crude
Tokyo, July 27 (Reuters) - Japan's top oil refiner Nippon Oil Corp. will keep its August processing volumes steady versus a year ago to meet summer gasoline demand and is seeking more Nile Blend crude to meet higher utility use.
Fluor Gains Eastman Chemical Gasification Plant Feed Work
Fluor Corporation announced today that it was selected by Eastman Chemical Company to provide front-end engineering and design work for a $1.6 billion gasification project along the Texas Gulf Coast.
Migao Corporation Secures Preferential Natural Gas Prices
Toronto, Ontario-- - Migao Corporation , a leading producer of specialty potash fertilizers for the Chinese market, is pleased to announce that it has negotiated preferential natural gas prices in Sichuan Province from China Petroleum & Chemical Corpora
Search the Pro-Talk network of sites
