Power-supply controllers offer design flexibility
A Maxim Integrated Products product story
Edited by the Electronicstalk editorial team Oct 19, 2009
Maxim Integrated Products has introduced the MAX17030/MAX17036 three-/two-phase, interleaved, step-down VID power-supply controllers supporting IMVP-6.5 notebook CPUs.
Two integrated drivers support two-phase standard voltage (SV) cores, while an optional external driver configuration supports three-phase extreme-edition (XE) cores.
This feature is said to provide greater design flexibility by allowing the MAX17030/MAX17036 to be used for both IMVP-6.5 XE and SV cores.
The three phases operate 120-degrees out-of-phase to minimise input/output filter requirements, improve efficiency, and reduce EMI.
Current-sense resistors and low-offset amplifiers maintain current balance across the three phases.
By sharing the current across three phases, the devices reduce the instantaneous input current of each phase and, thus, the input-voltage ripple.
The MAX17036 includes an additional transient-suppression feature that reduces the soar/sag voltage.
The MAX17030/MAX17036 are available in a space-saving 5 x 5mm, 40-pin TQFN package with an exposed backside pad.
They are fully specified over the -40C to +105C temperature range.
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