Product category:
Power Supply ICs and Controllers
News Release from: Supertex | Subject: HV9901
Edited by the Electronicstalk Editorial
Team on 28 June 2002
Universal relay driver avoids dodgy
frequencies
The HV9901 is a novel high-voltage universal relay driver IC with PWM switching capabilities to drive a wide variety of relays.
The Supertex HV9901 is a novel high-voltage universal relay driver IC with PWM switching capabilities to drive a wide variety of relays The IC is designed to simplify drive schemes for a wide range of supply voltages from 8 to 450V DC or up to 240V AC
This article was originally published on Electronicstalk on 9 Aug 2001 at 8.00am (UK)
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This unique patent-pending IC combines advanced PWM switching techniques for highly cost efficient and energy-saving designs.
With its compact size (16-pin DIP or SO package) it allows significant reduction in overall size, promoting smaller form factors.
Other features include programmable pull-in current, pull-in time and hold currents making it adaptable to almost all types of relays that can be used universally worldwide without external switches for different input voltages, while further increasing operational efficiency.
The constant current drive scheme: assures relay operation regardless of supply voltage or relay resistance; offers programmable oscillator frequency and sync optimise performance; and avoids critical frequencies during operation.
Additionally, an adjustable auxiliary regulator provides 1mA for powering external circuits, thereby saving additional components that otherwise would be needed.
"The HV9901 is a highly flexible switching relay driver solution.
One design can be used universally around the world giving customers the advantage of stocking only one drive scheme in their design inventory", said Brian Hedayati, Director of Marketing at Supertex.
"Our customers want a relay driver IC that is simple and efficient to use and offers significant energy-saving improvements".
Samples of the HV9901NG and HV9901P are available from stock.
Lead-time for production quantities is 4 to 5 weeks ARO, priced at $1.50 each in 10,000-unit quantities.
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