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8
SLUS563B − AUGUST 2003 − REVISED APRIL 2004
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FEATURES
DESCRIPTION
D
Operating Input Voltage 10 V to 40 V
The TPS40052 is part of a family of high-voltage,
D
Programmable Fixed-Frequency Up to
100 kHz to 1 MHz Voltage Mode Controller
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.
D
Internal Gate Drive Outputs for High-Side
and Synchronous N-Channel MOSFETs
D
D
D
D
D
16-Pin PowerPADt Package (θ = 2°C/W)
JC
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.
Thermal Shutdown
Externally Synchronizable
Programmable Short-Circuit Protection
Programmable Closed-Loop Soft-Start
APPLICATIONS
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.
D
D
D
D
DDR Tracking Regulators
Power Modules
Networking Equipment
Industrial Servers
SIMPLIFIED APPLICATION DIAGRAM
+
TPS40052PWP
V
−
IN
1
2
3
4
5
6
7
8
SYNC
16
15
ILIM
RT
VIN
BP5
BOOST 14
DDR
EA_REF HDRV 13
V
DDQ
12
SGND
SS
SW
+
BP10 11
LDRV 10
V
TT
VFB
COMP
PGND
9
PAD
−
UDG−03080
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Copyright 1999 − 2003, Texas Instruments Incorporated
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1
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