TPS40052_16 Datasheet, PDF (1/30 Pages) Texas Instruments – WIDE-INPUT SYNCHRONOUS BUCK CONTROLLER

TPS40052
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SLUS563C − AUGUST 2003 − REVISED FEBRUARY 2005
WIDEĆINPUT SYNCHRONOUS,
BUCK CONTROLLER
FEATURES
D Operating Input Voltage 10 V to 40 V
D Programmable Fixed-Frequency Up to
100 kHz to 1 MHz Voltage Mode Controller
D Internal Gate Drive Outputs for High-Side
and Synchronous N-Channel MOSFETs
D 16-Pin PowerPADt Package (θ_JC = 2°C/W)
D Thermal Shutdown
D Externally Synchronizable
D Programmable Short-Circuit Protection
D Programmable Closed-Loop Soft-Start
APPLICATIONS
D DDR Tracking Regulators
D Power Modules
D Networking Equipment
D Industrial Servers
DESCRIPTION
The TPS40052 is part of a family of high-voltage,
wide input, synchronous, step-down converters.
The TPS40052 offers design flexibility with a
variety of user programmable functions, including
soft-start, operating frequency, high-side current
limit, and loop compensation.
The TPS40052 is also synchronizable to an
external supply. It incorporates MOSFET gate
drivers for external N-channel high-side and
synchronous rectifier (SR) MOSFETs. Gate drive
logic incorporates anti-cross conduction circuitry
to prevent simultaneous high-side and
synchronous rectifier conduction.
The externally programmable short circuit
protection provides pulse-by-pulse current limit, as
well as hiccup mode operation utilizing an internal
fault counter for longer duration overloads.
SIMPLIFIED APPLICATION DIAGRAM
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TPS40052PWP
VIN
1 SYNC
ILIM 16
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2 RT
VIN 15
DDR
VDDQ
3 BP5 BOOST 14
4 EA_REF HDRV 13
5 SGND
SW 12
6 SS
BP10 11
7 VFB
LDRV 10
8 COMP PGND 9
PAD
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
www.ti.com
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VTT
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UDG−03080
Copyright  1999 − 2003, Texas Instruments Incorporated
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