1 Features

• Functional Safety-Capable

– Documentation available to aid functional safety

system design

• Versatile synchronous buck DC/DC module:

– Integrated MOSFETs, inductor, and controller

– Wide input voltage range: 3 V to 65 V

– Input transient protection up to 70 V

– Junction temperature range –40°C to +125°C

– 4.5-mm × 3.5-mm × 2-mm overmolded package

– Frequency adjustable from 200 kHz to 2.2 MHz

using the RT pin or an external SYNC signal

• Ultra-high efficiency across the full load range:

– Greater than 90 efficiency at 12 VIN, 3.3-VOUT

– Greater than 85 efficiency at 24 VIN, 5-VOUT

– Ultra-low operating quiescent current at no

load: 4 μA at VIN = 24 V to 3.3-V VOUT

• Optimized for ultra-low EMI requirements:

– Spread-spectrum reduces peak emissions

– Pin selectable FPWM mode for constant

frequency at light loads with MODE/SYNC pin

– FSW synchronization with MODE/SYNC pin

• Output voltage and current options:

– Fixed output variants of 3.3-V or 5-V VOUT

– Adjustable output voltage from 1 V to 13 V

– 600-mA output current (TPSM365R6)

– 300-mA output current (TPSM365R3)

• 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 TPSM365R6

with the WEBENCH® Power Designer

2 Applications

• Factory automation and control

• Building automation

• Test equipment

• Appliances

3 Description

The TPSM365R6 is a 600-mA, 65-V input

synchronous step-down DC/DC power module that

combines power MOSFETs, integrated inductor and

boot capacitor in a compact and easy-to-use 3.5-mm

× 4.5-mm × 2-mm, 11-pin QFN package. The small

HotRod™ QFN package technology enhances the

thermal performance and low EMI. It features the

ultra-low operating IQ of 4 μA at no load (24 V to

3.3-V VOUT). The TPSM365R6 is available in two

fixed output voltage option supporting 3.3 V and 5

V, and an adjustable output voltage option supporting

1-V to 13-V range. The module only requires four

external components for a 3.3-V and 5-V fixed output

solution. The TPSM365R6 is optimized for excellent

EMI performance and space constraint applications.

The TPSM365R6 uses a peak current mode control

scheme with internal compensation to maintain stable

operation with minimal output capacitance. The

precision EN feature allows precise control of the

device during start-up and shutdown. An open-drain

PGOOD output provides a true indication of the output

voltage status. The TPSM365R6 includes prebias

start up, overcurrent, and temperature protections,

making the TPSM365R6 an excellent device for

powering a wide range of industrial applications.

In the fixed option variants, the MODE/SYNC pin

enables seamless transition from FPWM to PFM with

a no-load standby quiescent current of less than

4 μA, ensuring high efficiency and superior transient

response for the entire load-current range.