TPS51513
www.ti.com ...................................................................................................................................................................................................... SLUS956–JUNE 2009
SINGLE PHASE, D-CAP+™ SYNCHRONOUS BUCK CONTROLLER
WITH INTEGRATED DRIVERS FOR GENERAL IC V ™ APPLICATIONS
CORE
1
FEATURES
DESCRIPTION
23
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Minimum External Parts Count
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Includes Accurate Output Current Monitor with
Programmable Clamp Voltage
The TPS51513 is a single-phase synchronous buck
controller with integrated gate drivers. Advanced
control features such as the D-CAP+™ architecture
and OSR™ overshoot reduction provide fast transient
response, low output capacitance and high efficiency.
The TPS51513 supports a wide range of IC VCORE
applications with an integrated 3-bit DAC. It also
provides a full complement of signal I/O including a
sleep mode control (SLP), two power good signals
(PGOOD and PG), and an analog current monitor
(IMON). Logic inputs are compatible with either 1-V
or 3.3-V logic levels. VCORE slew rates are controlled
with one resistor. In addition, the TPS51513 includes
high-current FET gate drivers with an integrated P/N
junction diode to drive N-channel FETs with low
switching loss. The TPS51513 is available in the
5 mm × 5 mm, 32-pin QFN package and operates
between –10°C and 100°C.
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3-Bit DAC Selects 1 of 8 Output Voltages
Custom VID Definition Available
Supports VID-on-the-Fly Voltage Changes
±8-mV VCORE Accuracy Over Line/Load/Temp.
Optimized Efficiency at Light and Heavy Loads
Patented Output Overshoot Reduction (OSR™)
Reduces Output Capacitance
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Accurate, Adjustable Voltage Positioning
Including No-Droop Option
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Selectable 250/300/350/500 kHz Frequency
Accurate, 8-level Selectable Current Limit
3-V to 28-V Conversion Voltage Range
Fast FET Driver w/Integrated Boost Diode
5 mm × 5 mm, 32-Pin QFN PowerPAD™
Package
ORDERING INFORMATION
TA
PLASTIC QFN (RHB)
–10°C to 100°C
TPS51513RHB (32-pin)
APPLICATIONS
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General IC VCORE Applications
VREF
C2
V5FILT
VREF
R2
C3
EN
PG PGOOD
C5
C1
R3
32 31 30 29 28 27 26 25
R1
1
2
3
4
5
6
7
8
GND
PG 24
PGOOD 23
PGND 22
V5IN 21
CSP
CSN
CSNS
CSP
RT1
CSN
R4
C4
GNDFB
VCCFB
GSNS
VSNS
REF
Q1
R5
TP51513RHB
DRVL 20
LL 19
L1
CSN
R6
C6
IMON2
IMON
VBST 18
DRVH 17
VOUT
VCCFB
IMON
+
Q2
C7
R7
5 V
COUT1
VBAT
9
10 11 12 13 14 15 16
GNDFB
C8
CIN1
GNDFB
UDG-09085
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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OSR, PowerPAD, D-CAP+ are trademarks of Texas Instruments.
Mathcad is a registered trademark of Parametric Technology Corporation .
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009, Texas Instruments Incorporated