1 Features

• Versatile synchronous buck DC/DC module

– Integrated MOSFETs, inductor, and controller

– 3V to 65V wide input voltage range

– 40ns (maximum) low minimum on time enables

36V to 3.3V conversion at 2.2MHz

– –40°C to 150°C junction temperature range

– 5.80mm × 5.20mm × 2.93mm enhanced

HotRod™ QFN package with exposed inductor

– Frequency adjustable from 300kHz to 2.2MHz

• Ultra-high efficiency across the full load range

– > 92% peak efficiency at 24VIN, 5VOUT,

400kHz

– 2.5μA PFM no-load input current

• Optimized for ultra-low EMI requirements

– Facilitates CISPR 11 Class B compliance

– Mode pin configurable ±5% or ±10% dualrandom

spread spectrum reducing peak

emissions

– Enhanced HotRod QFN package with

symmetrical pinout

– Pin-configurable 400kHz and 2.2MHz

– Pin-configurable AUTO or FPWM operation

• Output voltage and current options

– 3.3V or 5V VOUT fixed output variants

– Adjustable output voltage from 1V to 24V

– 3A, 2A, 1A output current options

• Inherent protection features for robust design

– Precision enable input and open-drain powergood

indicator for sequencing, control, and VIN

UVLO

– Overcurrent and thermal shutdown protections

2 Applications

• Industrial transport systems

• Factory automation and control systems

• Medical imaging systems

• Test and measurement systems

• Aerospace and defense

• Building automation

• Power delivery

• Robotics

3 Description

The TPSM656x0 is a family of 3A, 2A, 1A, 65V (70V

tolerant) input synchronous step-down DC/DC power

module that combines power MOSFETs, integrated

inductor, and passives in a compact and easy-touse

5.8mm × 5.2mm × 2.93mm, 19-pin enhanced

HotRod QFN package. With the pin-selectable fixedoutput

voltages of 3.3V and 5V and adjustable

output voltage from 1V to 24V, the TPSM656x0

is designed to quickly and easily implement a low-

EMI design in a small PCB footprint. The module

only requires the input and output filter capacitors

to finish the design and eliminates the magnetics

and compensation part selection from the design

process. A pin-selectable ±5% or ±10% dual-random

spread spectrum (DRSS) significantly reduces peak

emissions through a combination of triangular and

pseudo-random modulation while keeping output

voltage ripple very low.