1 Features

? ±1 output voltage accuracy

? Differential remote sensing

? Parallelable for multi-phase operation

? Start-up output voltage selectable in 50-mV steps

from 0.40 V to 3.35 V through VSETx pins and I2C

adjustable in 1.25-mV steps

? 5 selectable I2C addresses through VSETx pins

? Adjustable external compensation for wide output

capacitor range and optimized transient response

? Optimized for low EMI requirements

– No bond wire package

– Internal input capacitors

– Simplified layout through parallel input path

– Optional synchronization to external clock or

spread-spectrum operation

? Power-save Mode or forced-PWM operation

? Precise enable input threshold

? Power-good output with window comparator

? Active output discharge

? Excellent thermal performance

? –40°C to 125°C operating temperature range

? 4.5-mm × 6.8-mm QFN package with 0.5-mm pitch

? 77-mm2 solution size

2 Applications

? FPGA, ASIC and digital core supply

? Optical networks

? Storage

? DDR memory supply

? Test and measurement equipment

3 Description

The TPSM8287Axx is a family of pin-to-pin stepdown

DC/DC power Modules with differential remote

sensing and I2C interface. The power modules

integrate a synchronous step-down converter, an

inductor and input capacitors to simplify design,

reduce external components and save PCB area.

The low-profile and compact solution is suitable for

assembly by standard surface mount equipment.

The TPSM8287Axx family implements an enhanced

control scheme that supports fast transients. It can

operate in fixed-frequency or power-save mode. The

remote sensing feature optimizes voltage regulation

at the point-of-load and the device achieves ±1 DC

voltage accuracy over the entire temperature range.

The devices can operate in stacked / paralleled mode

to deliver higher output currents or to spread the

power dissipation across multiple devices. The I2Ccompatible

interface offers several control, monitoring

and warning features. The start-up voltage is

selectable through the VSETx pins to allow a powerup

without an active I2C communication.