Regulator module made for higher-voltage systems
A Linear Technology Corp product story
Edited by the Electronicstalk editorial team Mar 5, 2008
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.
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.
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Contact Linear Technology Corp
Tel +44 1628 477066
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