Description

The reference design PMP9464 utilizes the LMZ31530: a 30A SIMPLE SWITCHER® Power Module. The LMZ31530 SIMPLE SWITCHER® power module is an easy-to-use integrated power solution that combines a 30-A DC/DC converter with power MOSFETs: a shielded inductor: and passives into a low profile: QFN package.This design has a LM25056 on the front end. The LM25056 combines high performance analog and digital technology with a PMBus compliant SMBus/I2C interface to accurately measure the operating conditions of electrical systems including computing and storage blades connected to a backplane power bus. This allows the user to monitor the real time values of Vin: Iin: Pin and Pout; as well as temperature and peak power. These values are reported via PMBus™/SMBus™/I2C.PMP9464 also enables the user to margin the output voltage setting: by slewing it up or down. This is done with the LM10011 VID programmable current DAC. The LP2951 supplies a 3.3V rail for the LM3881 power sequencer. The LM3881 sequencer can be used for sequencing other off board power supplies.