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TPS4007DGQR, TPS40090, TPS40090PW

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Info of TPS4007DGQR
Info of TPS40090
Info of TPS40090PW

TPS4007DGQR, TPS40090, TPS40090PW Selling Leads, Datasheet

MFG:Texas Instruments Category:Integrated Circuits (ICs) Package Cooled:SOP-10 D/C:10+

TPS4007DGQR, TPS40090, TPS40090PW Datasheet download

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Part Number: TPS40090PW

Category: Integrated Circuits (ICs)

MFG: Texas Instruments

Package Cooled: SOP-10

D/C: 10+

Description: IC SYNC BUCK CTRL LO-V 24-TSSOP

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TPS40090 General Description

The TPS4009x family are two-, three-, or four-phase programmable synchronous buck controllers, 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 as shown in Figure 1.

The number of phases is programmed by con−necting 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.

The TPS4009x uses fixed frequency, peak current mode control with forced phase current balancing. When compared to voltage mode control, current mode results in a simplified feedback network and reduced input line sensitivity. Phase current is sensed by using either current sense resistors installed in series with output inductors or, for improved efficiency, by using the DCR (direct current resistance) of the filter inductors. The latter method involves generation of a current proportional signal with an R-C circuit (shown in Figure 10.

The R-C values are selected by matching the time constants of the R-C circuit and the inductor; R-C = L/DCR. With either current sense method, the current signal is amplified and superimposed on the amplified voltage error signal to provide current mode PWM control.

An output voltage droop can be programmed to improve the transient window and reduce size of the output filter. Other features include a single voltage operation, a true differential sense amplifier, a programmable current limit, soft-start and a power good indicator.

TPS40090 Features

Two-, Three-, or Four-Phase Operation
5-V to 15-V Operating Range
Programmable Switching Frequency Up to 1-MHz/Phase
Current Mode Control With Forced Current Sharing(1)
1% Internal 0.7-V Reference
Resistive Divider Set Output Voltage
True Remote Sensing Differential Amplifier
Resistive or DCR Current Sensing
Current Sense Fault Protection
Programmable Load Line
Compatible with UCC37222 Predictive Gate Drive Technology Drivers
24-Pin Space-Saving TSSOP Package
TPS40090: Binary Output
TPS40091: Tri−State Output

TPS40090 Typical Application

Internet Servers
Network Equipment
Telecommunications Equipment
DC Power Distributed Systems

TPS40090 Connection Diagram

TPS40090PW Parameters

Technical/Catalog Information	TPS40090PW
Vendor	Texas Instruments
Category	Integrated Circuits (ICs)
PWM Type	Current Mode
Number of Outputs	4
Package / Case	24-TSSOP
Packaging	Tube
Duty Cycle	87.5%
Voltage - Supply	4.5 V ~ 16.5 V
Frequency-Max	1MHz
Buck	Yes
Boost	No
Flyback	No
Inverting	No
Doubler	No
Divider	No
Cuk	No
Isolated	No
Drawing Number	296; 4040064; PW; 8, 14, 16, 20, 24, 28
Operating Temperature	-40°C ~ 85°C
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	TPS40090PW TPS40090PW 296 15881 5 ND 296158815ND 296-15881-5

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