DATASHEET
ISL8278M FN8924
Rev.1.00
Aug 17, 2017 Digital DC/DC PMBus 33A Module Features The ISL8278M is a 33A step-down, DC/DC power supply module
with an integrated digital PWM controller, synchronous power
switches, an inductor, and passives. Only bulk input and output
capacitors are needed to finish the design. The 33A of
continuous output current can be delivered without the need
for airflow or a heatsink. The thermally enhanced HDA module
is capable of dissipating heat directly into the PCB. Complete digital switch-mode power supply
-Wide VIN range: 4.5V to 14V
-Programmable VOUT range: 0.6V to 5V PMBus compliant I2C communication interface
-Programmable VOUT, margining, UV/OV, IOUT limit,
soft-start/stop, sequencing, and external synchronization
-Monitor: VIN, VOUT, IOUT, temperature, duty cycle,
switching frequency, and faults The ISL8278M uses ChargeModeв„ў control architecture, which
responds to a transient load within a single switching cycle.
The ISL8278M comes with a preprogrammed configuration for
operating in a pin-strap mode. Output voltage, switching
frequency, and the device SMBus address can be programmed
with external resistors. More configurations, such as soft-start
and fault limits can be easily programmed or changed using a
PMBus compliant serial bus interface. PMBus can be used to …