Power Electronics / Power Management


High-side MOSFET driver

17 March 2010 Power Electronics / Power Management

The MAX15054 is Maxim’s new high-side MOSFET driver for high-voltage applications. The device provides a low-cost solution for HB (high-brightness) LED designs that require a buck or buck-boost topology, but lack the requisite high-side MOSFET driver. It enables designers to avoid the cost and complexity of a SEPIC topology by allowing the implementation of buck and single-inductor buck-boost topologies with the output referenced to ground in single-string and multistring LED drivers.

The driver features a very short (12 ns) propagation delay, as well as short rise and fall times due to its 2 A drive capability. Its dual UVLO (under-voltage lockout) feature protects the power MOSFET from damage in the event that the gate drive or supply voltage is too low. Due to its operation up to 60 V, the MAX15054 can be used by designers for automotive and HB LED illumination applications. It is also well suited for full- and half-bridge and two-switch forward converters in datacom, telecom and server applications. The part is available in a 2,9 x 2,8 mm, 6-pin SOT23 package, and is fully specified over the -40°C to +125°C automotive temperature range.

For more information contact Larry Gordon, CST Electronics, +27 (0)11 608 0070, [email protected], www.cstelectronics.co.za



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