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Multichip module broadens its dc-dc horizons

Posted: 27 Sep 2005 ?? ?Print Version ?Bookmark and Share

Keywords:toshiba America? tb7001fl? multichip module? mcm? driver ic?

Addressing the demand for higher current and higher frequency power solutions for dc-dc converters, Toshiba America's TB7001FL multichip module (MCM) combines a driver IC with a mosfet and the company's MOSBD, a single-die combination of a power MOSFET and a Schottky barrier diode, in one package measuring just 8-by-8-by-0.85 mm. The new MCM represents a level of integration beyond the company's dual-channel MOSBD product, which combines a high-side MOSFET with a low-side MOSFET/Schottky barrier diode.

"With this device, Toshiba is responding to customer demand for higher power, faster response time, increased precision, and higher efficiency all in a smaller structure for their portable devices," said Sam Abdeh, business development specialist for power products. "This new MCM showcases Toshiba's expertise in innovative packaging for components targeted for use in ever-smaller consumer electronic devices by integrating three key devices into a single module to give design engineers the ability to produce more powerful, yet smaller mobile products."

The MCM, which employs its power MOSFET for the high side of the DC/DC converter, the MOSBD to handle low-side functions, and the driver IC, which includes a high speed MOS gate driver and level shifter functions to drive the high-side MOSFET, can deliver up to 20A at 1.5V (maximum operating voltage to the power stage is 19V). Designed to work at switching frequencies to 1MHz, it boasts an efficiency of greater than 84 percent (12V input).

Built-in functions include a low-side MOSBD shutdown input, thermal shutdown, and under-voltage protection. The TB7001FL is Pb-free and is RoHS-compatible. Customer samples of the TB7001FL are available now and it's priced at $4.50 each in sample quantities.

- Vince Biancomano


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