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TPS40140RHHR-TPS40140RHHRG4-TPS40140RHHT
Stackable 2 Channel Multiphase or 2 Channel Independent Output Controller
HDRV1
SW1
LDRV1
TPS40140
SW2
CS1
VIN
CSRT1
VIN
CSRT2
VOUT1
VOUT2
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TPS40140SLUS660I –SEPTEMBER 2005–REVISED JANUARY 2015
TPS40140 Dual or 2-Phase, Stackable Controller Features 2 Applications VDD from 4.5to15V, With Internal 5-V Regulator • Graphic Cards VOUT from 0.7Vto 5.8V • Internet Servers Converts from 15-V Inputto 0.7-V Outputat • Networking Equipment MHz • Telecommunications Equipment Dual-Outputor 2-Phase Interleaved Operation, • DC Power Distributed Systems
Stackableto16 Phases
Description• Supports Prebiased Outputs
The TPS40140isa multifunctional synchronous buckProgrammable Switching Frequencyupto
controller that can be configuredto provide eithera1 MHz/Phase single-output 2-phase power supply ora power• 0.5% Internally Trimmed 0.7-V Reference supply that supports two independent outputs. 10-μA Shutdown Current Several TPS40140 controllers can be stacked uptoa
16-phase single output power supply. Alternatively,• Current Mode Control With Forced Current several controllers providing multiple independentSharing(1)
outputs can be synchronized in an interleaving• 1-to 40-V Power Stage Operation Range patternfor improved input ripple current.• Power Sharing From Different Input Voltage Rails, The TPS40140 can convert froma 15-V inputto(for Example, Master From5V, Slave From12V) 0.7-V outputat1 MHz.• True Remote Sensing Differential Amplifier
Each phase operatesata switching frequencyof up• Programmable Input Undervoltage Lockout to1 MHz. The two phasesin one device operate(UVLO) 180° out-of-phase. Ina multiple-device stackable• Resistiveor Inductor DCR Current Sensing configuration, the phase shiftof the slaves, relativeto master,is programmable.• Providea 6-Bit Digitally Controlled Output When
Used With TPS40120
Device Information(1)• 36-Pin VQFN Package
(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.(1) Patents Pending
Simplified Schematic
