Integrated Circuits (ICs)

TPS40091PW

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Texas Instruments

4 CHANNEL MULTIPHASE BUCK DC/DC CONTROLLER WITH TRI-STATE

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Integrated Circuits (ICs)

TPS40091PW

Active

Texas Instruments

4 CHANNEL MULTIPHASE BUCK DC/DC CONTROLLER WITH TRI-STATE

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DocumentsDatasheet

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	TPS40091PW

Clock Sync	True
Control Features	Current Limit, Power Good, Soft Start, Frequency Control, Enable
Duty Cycle (Max) [Max]	87.5 %
Frequency - Switching [Max]	1.2 MHz
Frequency - Switching [Min]	100 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	4
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	4
Output Type	PWM Signal
Package / Case	24-TSSOP
Package / Case	0.173 in, 4.4 mm
Supplier Device Package	24-TSSOP
Synchronous Rectifier	False
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	15 V
Voltage - Supply (Vcc/Vdd) [Min]	4.5 V

TPS40091 Series

4 Channel Multiphase Buck DC/DC Controller with Tri-state

Part	Control Features	Output Phases	Output Configuration	Output Type	Supplier Device Package	Topology	Package / Case	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Duty Cycle (Max) [Max]	Function	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Number of Outputs	Frequency - Switching [Max]	Frequency - Switching [Min]	Package / Case
Texas Instruments TPS40091RHDR	Current Limit Enable Frequency Control Power Good Soft Start	4	Positive	PWM Signal	28-VQFN (5x5)	Buck	28-VFQFN Exposed Pad	15 V	4.5 V	87.5 %	Step-Down	Surface Mount	85 °C	-40 °C	4	1.2 MHz	100 kHz
Texas Instruments TPS40091RHDT	Current Limit Enable Frequency Control Power Good Soft Start	4	Positive	PWM Signal	28-VQFN (5x5)	Buck	28-VFQFN Exposed Pad	15 V	4.5 V	87.5 %	Step-Down	Surface Mount	85 °C	-40 °C	4	1.2 MHz	100 kHz
Texas Instruments TPS40091PW	Current Limit Enable Frequency Control Power Good Soft Start	4	Positive	PWM Signal	24-TSSOP	Buck	24-TSSOP	15 V	4.5 V	87.5 %	Step-Down	Surface Mount	85 °C	-40 °C	4	1.2 MHz	100 kHz	0.173 in 4.4 mm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	300	$ 3.75
Texas Instruments	TUBE	1	$ 4.66
		100	$ 4.08
		250	$ 2.86
		1000	$ 2.31

Description

General part information

TPS40091 Series

The TPS4009x is a two-, three-, or four-phase programmable synchronous buck controller that is optimized for low-voltage, high-current applications powered by a 5-V to 15-V distributed supply. A multi-phase converter offers several advantages over a single power stage including lower current ripple on the input and output capacitors, faster transient response to load steps, improved power handling capabilities, and higher system efficiency.

Each phase can be operated at a switching frequency up to 1-MHz, resulting in an effective ripple frequency of up to 4-MHz at the input and the output in a four-phase application. A two-phase design operates 180 degrees out-of-phase, a three-phase design operates 120 degrees out-of-phase, and a four-phase design operates 90 degrees out-of-phase.

The number of phases is programmed by connecting the de-activated phase PWM output to the output of the internal 5-V LDO. In two-phase operation the even phase outputs should be de-activated.

Documents

Technical documentation and resources