1 Features

? Versatile synchronous buck DC/DC power module

– Integrated MOSFETs, inductor, and controller

– Wide input voltage range of 3 V to 36 V

– Adjustable output voltage from 1 V to 6 V with

1 setpoint accuracy over temperature

– 5.0-mm × 5.5-mm × 4-mm overmolded package

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

– Frequency adjustable from 200 kHz to 2.2 MHz

– Negative output voltage capability

? Ultra-high efficiency across the full load range

– 95+ peak efficiency

– External bias option for improved efficiency

– Shutdown quiescent current of 0.6 μA (typical)

– 0.5-V typical dropout voltage at 4-A load

? Ultra-low conducted and radiated EMI signatures

– Low-noise package with dual input paths and

integrated capacitors reduces switch ringing

– Resistor-adjustable switch-node slew rate

– Constant-frequency FPWM mode of operation

– Meets CISPR 11 and 32 class B emissions

? Suitable for scalable power supplies

– Pin compatible with the TLVM13660 (36 V, 6 A)

? 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 TLVM13640 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

Deriving from a family of synchronous buck modules,

the TLVM13640 is a highly integrated 36-V, 4-A

DC/DC solution that combines power MOSFETs, a

shielded inductor, and passives in an Enhanced

HotRod? QFN package. The module has VIN and

VOUT pins located at the corners of the package

for optimized input and output capacitor placement.

Four larger thermal pads beneath the module enable

a simple layout and easy handling in manufacturing.

With an output voltage range from 1 V to 6 V,

the TLVM13640 is designed to quickly and easily

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

The total solution requires as few as four external

components and eliminates the magnetics and

compensation part selection from the design process.

Although designed for small size and simplicity

in space-constrained applications, the TLVM13640

module offers many features for robust performance:

precision enable with hysteresis for adjustable

input-voltage UVLO, resistor-programmable switch

node slew rate for improved EMI, integrated VCC,

bootstrap, and input capacitors for increased reliability

and higher density, constant switching frequency over

the full load current range, negative output voltage

capability, and a PGOOD indicator for sequencing,

fault protection, and output voltage monitoring.