TPS65276V

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SLVSBW0B – FEBRUARY 2013 – REVISED JANUARY 2014

4.5-V TO 18-V INPUT VOLTAGE, 6-A/3.5-A DUAL SYNCHRONOUS STEP-DOWN

Check for Samples: TPS65276V

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FEATURES

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4.5-V to 18-V Wide Input Voltage Range

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Peak Current-Mode Control with Simple

Compensation Circuit

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Output Voltage from 0.68 V to 1.95 V with

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Cycle-by-Cycle Over Current Protection

10-mV Steps for Each Buck; Output Voltage

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180° Out-of-Phase Operation to Reduce Input

Can Also be Set By Resistor Divider

Capacitance and Power Supply Induced Noise

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Programmable Slew Rate Control for Output

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Over Temperature Protection

Voltage Transition

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Available in 32-Pin Thermally Enhanced

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Up to 6-A Maximum Continuous Output

HTSSOP (DAP) and 36-Pin QFN 6-mm x 6-mm

Current in Buck 1 and 3.5-A in Buck 2

(RHH) Packages

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(100 kHz) and Fast Mode (400 kHz)

APPLICATIONS

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DTV

Temperature Warning

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TCON

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Pulse Skipping Mode to Achieve High

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BDVD

Efficiency in Light Load

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Set Top Boxes

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Adjustable Switching Frequency

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Tablet PC

200 kHz - 1.6 MHz Set by External Resistor

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Dedicated Enable and Soft-Start for Each Buck

DESCRIPTION/ORDERING INFORMATION

TPS65276V is a monolithic dual synchronous buck converter with wide 4.5V to 18V operating input voltage

range that encompassed most intermediate bus voltage operating off 5-, 9-, 12- or 15-V power bus or battery.

The converter with constant frequency peak current mode control is designed to simplify its application while

giving the designers options to optimize their usage according to the target applications.

Each buck converter in TPS65276V has external feedback resistors that can be used for setting the initial start

up voltage. The feedback voltage reference for this start-up option is 0.6 V. Once the VID DAC is updated via the

pulse skipping mode and reading the power good status and die temperature warning.

The switching frequency of the converters can be set from 200 kHz to 1.6 MHz with an external resistor. Two

converters have clock signal with 180° out-of-phase.

flexibility in power up programmability. Constant frequency peak current mode control simplifies the

compensation and provides fast transient response. Cycle-by-cycle over current protection and hiccup mode

operation limit MOSFET power dissipation in short circuit or over loading fault conditions. Low side reverse over

current protection also prevents excessive sinking current from damaging the converter.

configuration. The PSM mode allows a power loss reduction on the input power supplied to the system to

achieve high efficiency at light loading.

The TPS65273V is available in a 32-pin thermally enhanced HTSSOP (DAP) package and 36-pin QFN

6-mm x 6-mm (RHH) package.

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PRODUCTION DATA information is current as of publication date.

Copyright © 2013–2014, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.