TPS40140_15 Datasheet, PDF (1/71 Pages) Texas Instruments – TPS40140 Dual or 2-Phase, Stackable Controller

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TPS40140
SLUS660I – SEPTEMBER 2005 – REVISED JANUARY 2015
TPS40140 Dual or 2-Phase, Stackable Controller
1 Features
•1 VDD from 4.5 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
1 MHz
• Dual-Output or 2-Phase Interleaved Operation,
Stackable to 16 Phases
• Supports Prebiased Outputs
Programmable Switching Frequency up to
1 MHz/Phase
• 0.5% Internally Trimmed 0.7-V Reference
• 10-μA Shutdown Current
• Current Mode Control With Forced Current
Sharing ⁽¹⁾
• 1- to 40-V Power Stage Operation Range
• Power Sharing From Different Input Voltage Rails,
(for Example, Master From 5 V, Slave From 12 V)
• True Remote Sensing Differential Amplifier
• Programmable Input Undervoltage Lockout
(UVLO)
• Resistive or Inductor DCR Current Sensing
• Provide a 6-Bit Digitally Controlled Output When
Used With TPS40120
• 36-Pin VQFN Package
2 Applications
• Graphic Cards
• Internet Servers
• Networking Equipment
• Telecommunications Equipment
• DC Power Distributed Systems
3 Description
The TPS40140 is a multifunctional synchronous buck
controller that can be configured to provide either a
single-output 2-phase power supply or a power
supply that supports two independent outputs.
Several TPS40140 controllers can be stacked up to a
16-phase single output power supply. Alternatively,
several controllers providing multiple independent
outputs can be synchronized in an interleaving
pattern for improved input ripple current.
The TPS40140 can convert from a 15-V input to a
0.7-V output at 1 MHz.
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 slaves, relative to
a master, is programmable.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS40140
VQFN (36)
6.00 mm × 6.00 mm
(1) Patents Pending
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
TPS40140
HDRV1
Simplified Schematic
VIN
CSRT1
CS1
SW1
VOUT1
LDRV1
HDRV2
L1
VIN
CSRT2
CS2
SW2
VOUT2
LDRV2
L2
UDG−06016
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.