1 Features

• Versatile dual output voltage or multiphase single

output synchronous buck module

– Integrated MOSFETs, inductor, and controller

– Wide input voltage range of 3V to 36V

– Adjustable output voltage from 0.8V to 16V

– 6.5mm × 7.0mm × 2mm overmolded package

– –40°C to 125°C junction temperature range

– Negative output voltage capability

• Ultra-high efficiency across the full load range

– Peak efficiency of 93.5%+

– External bias option for improved efficiency

– Exposed Pad for low thermal impedance. EVM

θ JA = 20 °C/W.

– Shutdown quiescent current of 0.6μA (typical)

• Ultra-low conducted and radiated EMI signatures

– Low-noise package with dual input paths and

integrated capacitors reduces switch ringing

– Meets CISPR 11 and 32 Class B emissions

• Designed for scalable power supplies

• Inherent protection features for robust design

– Precision enable input and open-drain PGOOD

indicator for sequencing, control, and VIN UVLO

– Overcurrent and thermal shutdown protections

• Create a custom design using the TPSM64406

with the WEBENCH® Power Designer

2 Applications

Test and measurement, aerospace and defense

Factory automation and control

Buck and inverting buck-boost power supplies

3 Description

The TPSM6440xx is a highly integrated 36V

input capable, DC/DC design that combines power

MOSFETs, a shielded inductor, and passives in

an enhanced HotRod™ QFN package. The device

supports either dual output or high current single

output using an interleaved, stackable, current-mode

control architecture for easy loop compensation, fast

transient response, excellent load and line regulation,

and accurate current sharing with an output clock

supporting up to 6 phases for currents up to 18A.

The module has VIN and VOUT pins located at the

corners of the package for optimized input and output

capacitor placement. A large thermal pad beneath the

module enable a simple layout and easy handling in

manufacturing.

With an output voltage from 1V to 16V, the

TPSM6440xx is designed to quickly and easily

implement a low-EMI design in a small PCB footprint.

The total design requires as few as six external

components and eliminates the magnetics selection

from the design process.

Although designed for small size and simplicity

in space-constrained applications, the TPSM6440xx

module offers many features for robust performance:

precision enable with hysteresis for adjustable inputvoltage

UVLO, and spread spectrum for improved

EMI. Along with integrated VCC, bootstrap and

input capacitors for increased reliability and higher

density. The module can be configured for constant

switching frequency over the full load current range

(FPWM), or variable frequency (PFM) for higher

light load efficiency. Including a PGOOD indicator

for sequencing, fault protection, and output voltage

monitoring.