Product category: Power Supply ICs and Controllers
News Release from: Maxim Integrated Products | Subject: MAX1938
Edited by the Electronicstalk Editorial Team on 28 August 2002
PWM controller provides budget core
voltages
The MAX1938 is a dual-phase pulsewidth modulation step-down DC/DC controller for lowest cost designs of CPU core supplies in desktops, notebooks, and blade servers.
The MAX1938 is a dual-phase pulsewidth modulation (PWM) step-down DC/DC controller for lowest cost designs of CPU core supplies in desktops, notebooks, and blade servers Maxim's proprietary Quick PWM architecture provides excellent transient response and significantly reduces the number, size and cost of output capacitors
This article was originally published on Electronicstalk on 27 Aug 2002 at 8.00am (UK)
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The MAX1938 is a highly integrated dual-phase interleaved PWM controller with a wide input operating voltage of 8 to 24V.
With Quick PWM architecture, the MAX1938 responds to a step load transient within 300ns, thus reducing the number of output capacitors.
Additionally, 0.75% output accuracy and fast active voltage positioning further reduce output capacitors.
The MAX1938 uses 6V gate drivers which allow for fewer, less expensive mosfets compared with 5V gate drivers in competing integrated driver multiphase solutions.
The MAX1938 provides remote output voltage sensing and allows for lossless current sensing, short-circuit shutdown, and overvoltage protection.
The MAX1938EEI comes in a space-saving 28-pin QSOP.
Prices start at $2.25 (1000-up, FOB USA).
The MAX1938 is specified for the extended industrial temperature range (-40 to +85C).
Evaluation boards are available in VRM and VRD form factors to simplify design.
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