1 Features

• Functional Safety-Capable

– Documentation available to aid functional safety

system design

• Versatile synchronous buck DC/DC module:

– Integrated MOSFETs, inductor, and controller

– 3-V to 65-V wide input voltage range

– Up to 70-V input transient

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

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

– Frequency adjustable from 200 kHz to 2.2 MHz

using the RT pin

• Optimized for ultra-low EMI requirements:

– Pseudo-random spread spectrum reduces peak

emissions

– Pin selectable FPWM mode for constant

frequency at light loads with MODE/SYNC pin

– Frequency synchronization with MODE/SYNC

pin

– CISPR11 class B capable

• Designed for scalable industrial power supplies:

– Pin compatible family with TPSM365R3 (65

V, 300 mA), TPSM365R6 (65 V, 600 mA),

TPSM33615 (36 V, 1.5 A), and TPSM33625 (36

V, 2.5 A)

• Inherent protection features for robust design

– Precision enable input and open-drain PGOOD

indicator for control, sequencing, and VIN UVLO

– Overcurrent and thermal shutdown protections

• Create a custom design using the TPSM365R15

with the WEBENCH® Power Designer

2 Applications

• Factory automation

• Building automation

• Appliances

3 Description

The TPSM365R1 and TPSM365R15 are 65-V, 100-

mA, and 150-mA synchronous step-down DC/DC

power modules that combine 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

results in low EMI. The device features ultra-low

operating IQ of 4-μA at no load (24 VIN to 3.3

VOUT). The TPSM365R1x support fixed 3.3-V and 5-V

outputs, as well as adjustable output voltages ranging

from 1 V to 16 V.

The TPSM365R1x use peak current mode control

architecture with internal compensation to maintain

stable operation with minimal output capacitance.

With a resistor from the RT pin to ground, the

switching frequency is programmed to operate at

any desired point over a wide range from 200 kHz

to 2.2 MHz. The precision EN/UVLO feature allows

precise control of the device during the start-up

and shutdown. The PGOOD flag, with built-in glitch

filter and delayed release, offers a true indication

of the system status, eliminating the requirement

for an external voltage supervisor. The compact

design size and rich feature set of TPSM365R1x

simplifies implementation for a wide range of industrial

applications.