Product category:
DC/DC Convertors
News Release from: Linear Technology Corp | Subject: LTM4607
Edited by the Electronicstalk Editorial
Team on 05 March 2008
Regulator module made for higher-voltage
systems
Integrates a synchronous buck-boost DC/DC controller, four N-channel MOSFETs, input and output bypass capacitors and all compensation circuitry.
The LTM4607 is the latest addition to the Linear Technology DC/DC uModule family of regulator systems that can regulate an output voltage from a variable input voltage greater than, less than or equal to the output voltage The LTM4607 is designed for higher-voltage systems and operates from 4.5-36V inputs, regulates an output voltage from 0.8 to 24V and delivers output power up to 190W
This article was originally published on Electronicstalk on 28 Jul 2004 at 8.00am (UK)
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The LTM4607 integrates a synchronous buck-boost DC/DC controller, four N-channel MOSFETs, input and output bypass capacitors and all compensation circuitry in a 15 x 15 x 2.8mm land grid array (LGA) plastic moulded package.
Only an inductor, feedback and sense resistors, and bulk capacitors are required to implement a very low profile, compact and high efficiency design.
The LTM4607 provides a compact regulator solution for applications such as networking, industrial, automotive systems and high power battery-operated devices.
The LTM4607's onboard proprietary four-switch synchronous MOSFET design achieves up to 92% efficiency in boost mode (5V input, 16V/2.5A output) and up to 97.7% efficiency in buck mode (32V input, 20V/8A output).
Unlike other topologies such as SEPIC (single ended primary inductor convertor) that require up to 20 components and custom magnetics, the LTM4607 buck-boost uModule solution uses only eight components and an off-the-shelf inductor.
In addition, the efficiency of a comparable SEPIC circuit is only 76% to 84%.
Furthermore, to reduce undesirable frequency harmonics, the LTM4607 is phase-lockable to an external clock frequency ranging from 200kHz to 400kHz.
Safety features include overvoltage and foldback current protection.
The LTM4607 is offered for operation from -40 to +85C temperature range.
1000-piece pricing starts at US $21.55. Request a free brochure from Linear Technology Corp ...
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