
1
INTRODUCTION
1.1 FEATURES
HDRV1
SW1
LDRV1
HDRV2
TPS40140
SW2
LDRV2
L1
CS1
VIN
CSRT1
L2
CS2
VIN
CSRT2
VOUT1
VOUT2
UDG06016
1.3 DESCRIPTION
1.2 APPLICATIONS
1.4 ORDERING INFORMATION
TPS40140
DUAL OR 2-PHASE, STACKABLE CONTROLLER
www.ti.com
SLUS660F – SEPTEMBER 2005 – REVISED SEPTEMBER 2009
VDD From 4.5 V to 15 V, With Internal 5-V
Regulator
V
OUT From 0.7 V to 5.8 V
Converts From 15-V Input to 0.7-V Output at
1MHz
Dual-Output or 2-Phase Interleaved Operation,
Stackable to 16 Phases
Supports Pre-Biased Outputs
Programmable Switching Frequency Up to 1
MHz/Phase
0.5% Internally Trimmed 0.7-V Reference
10-A Shutdown Current
Current Mode Control with Forced Current
Sharing(1)
1-V to 40-V Power Stage Operation Range
Power Sharing from Different Input Voltage
Rails, (e.g. Master From 5 V, Slave From 12 V)
True Remote Sensing Differential Amplifier
Programmable Input Undervoltage Lockout
The
TPS40140
is
a
multi-functional
synchronous
buck
controller
that
can
be
Resistive or Inductor DCR Current Sensing
configured to provide either a single-output
Provide a 6-Bit Digitally-Controlled Output
two-phase power supply or a power supply
When Used With TPS40120
that
supports
two
independent
outputs.
36-pin QFN Package
Several TPS40140 controllers can be stacked
up to a 16-phase multi-phase single output
power supply. Alternatively, several controllers
providing multiple independent outputs can be
Graphic Cards
synchronized in an interleaving pattern for
Internet Servers
improved input ripple current.
Networking Equipment
The TPS40140 is capable of converting from a
Telecommunications Equipment
15-V input to a 0.7-V output at 1MHz.
DC Power Distributed Systems
Each phase operates at a switching frequency
of up to 1 MHz. The two phases in one device
operate 180
° out-of-phase. In a multiple device
stackable configuration, the phase shift of the
(1)
Patents Pending
slaves, relative to a master, is programmable.
PACKAGE
TAPE AND REEL QTY.
ORDERABLE DEVICE
250
TPS40140RHHT
Plastic Quad Flatpack 36-pin RHH (PQFP)
3000
TPS40140RHHR
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 document.
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2005–2009, 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.