TPS54291

Name: TPS54291
Brand: TI
SKU: TPS54291
Price: 2.112 USD

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4.5 V to 18 V input, 600 kHz, 1.5 / 2.5 A dual synchronous step-down converter

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Data sheet

document-pdfAcrobat TPS5429x 1.5-A and 2.5-A Dual, Fully-Synchronous Buck Converter With Integrated MOSFET datasheet (Rev. A) PDF | HTML

TPS54291

ACTIVE

Data sheet

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Product details

Rating

Catalog

Operating temperature range (°C)

-40 to 145

Topology

Buck

Type

Converter

Iout (max) (A)

2.5

Vin (min) (V)

4.5

Vin (max) (V)

18

Switching frequency (min) (kHz)

600

Switching frequency (max) (kHz)

600

Features

Enable, Phase Interleaving, Synchronous Rectification

Control mode

current mode

Vout (min) (V)

0.8

Vout (max) (V)

15.3

Iq (typ) (µA)

1800

Duty cycle (max) (%)

85

Rating

Catalog

Operating temperature range (°C)

-40 to 145

Topology

Buck

Type

Converter

Iout (max) (A)

2.5

Vin (min) (V)

4.5

Vin (max) (V)

18

Switching frequency (min) (kHz)

600

Switching frequency (max) (kHz)

600

Features

Enable, Phase Interleaving, Synchronous Rectification

Control mode

current mode

Vout (min) (V)

0.8

Vout (max) (V)

15.3

Iq (typ) (µA)

1800

Duty cycle (max) (%)

85

HTSSOP (PWP)

16

32 mm² 5 x 6.4

4.5-V to 18-V Input Range
Output Voltage Range 0.8 V to D_MAX × V_IN
Fully Integrated Dual Buck: 1.5 A and 2.5 A
Three Fixed Switching Frequency Versions:
- TPS54290: 300 kHz
- TPS54291: 600 kHz
- TPS54292: 1.2 MHz
Integrated UVLO
0.8 V_REF With 1% Accuracy (0°C to 85°C)
Internal Soft Start:
- TPS54290: 5.2 ms
- TPS54291: 2.6 ms
- TPS54292: 1.3 ms
Dual PWM Outputs 180° Out-of-Phase
Dedicated Enable for Each Channel
Current Mode Control for Simplified Compensation
External Compensation
Pulse-by-Pulse Overcurrent Protection, 2.2-A and 3.8-A Overcurrent Limit
Integrated Bootstrap Switch
Thermal Shutdown Protection at 145°C
16-Pin PowerPAD™ HTSSOP Package
APPLICATIONS
- Set-Top Boxes
- Digital TVs
- Power for DSP
- Consumer Electronics

All other trademarks are the property of their respective owners

4.5-V to 18-V Input Range
Output Voltage Range 0.8 V to D_MAX × V_IN
Fully Integrated Dual Buck: 1.5 A and 2.5 A
Three Fixed Switching Frequency Versions:
- TPS54290: 300 kHz
- TPS54291: 600 kHz
- TPS54292: 1.2 MHz
Integrated UVLO
0.8 V_REF With 1% Accuracy (0°C to 85°C)
Internal Soft Start:
- TPS54290: 5.2 ms
- TPS54291: 2.6 ms
- TPS54292: 1.3 ms
Dual PWM Outputs 180° Out-of-Phase
Dedicated Enable for Each Channel
Current Mode Control for Simplified Compensation
External Compensation
Pulse-by-Pulse Overcurrent Protection, 2.2-A and 3.8-A Overcurrent Limit
Integrated Bootstrap Switch
Thermal Shutdown Protection at 145°C
16-Pin PowerPAD™ HTSSOP Package
APPLICATIONS
- Set-Top Boxes
- Digital TVs
- Power for DSP
- Consumer Electronics

All other trademarks are the property of their respective owners

The TPS54290, TPS54291, and TPS54292 devices are dual-output, fully synchronous buck converters capable of supporting applications with a minimal number of external components. It operates from a 4.5-V to 18-V input supply voltage, and supports output voltages as low as 0.8 V and as high as 90% of the input voltage.

Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency. Channel 1 can provide up to 1.5 A of continuous current. Meanwhile, Channel 2 supports up to 2.5 A.

Current mode control simplifies the compensation. The external compensation adds flexibility for the user to choose different type of output capacitors.

180° out-of-phase operation reduces the ripple current through the input capacitor, providing the benefit of reducing input capacitance, alleviating EMI and increasing capacitor life.

The TPS54290, TPS54291, and TPS54292 devices are dual-output, fully synchronous buck converters capable of supporting applications with a minimal number of external components. It operates from a 4.5-V to 18-V input supply voltage, and supports output voltages as low as 0.8 V and as high as 90% of the input voltage.

Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency. Channel 1 can provide up to 1.5 A of continuous current. Meanwhile, Channel 2 supports up to 2.5 A.

Current mode control simplifies the compensation. The external compensation adds flexibility for the user to choose different type of output capacitors.

180° out-of-phase operation reduces the ripple current through the input capacitor, providing the benefit of reducing input capacitance, alleviating EMI and increasing capacitor life.

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Technical documentation

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	Type	Title		Date
*	Data sheet	TPS5429x 1.5-A and 2.5-A Dual, Fully-Synchronous Buck Converter With Integrated MOSFET datasheet (Rev. A)	PDF \| HTML	29 Dec 2016
	User guide	TPS5429x Step-Down Converter Evaluation Module User's Guide (Rev. A)	PDF \| HTML	13 Oct 2021
	Selection guide	Power Management Guide 2018 (Rev. R)		25 Jun 2018
	Application note	Understanding Thermal Dissipation and Design of a Heatsink		04 May 2011

Design & development

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Evaluation board

TPS54291EVM-431 — 12V Input, 3.3V 1.5A and 1.2V and 2.5A Dual Sync Buck Converter Evaluation Module

The TPS54291EVM-431 evaluation module (EVM) is a dual synchronous buck converter providing fixed3.3V and 1.2V outputs at up to 1.5A and 2.5A respectively from a 12V bus. The EVM is designed to start-up from a single supply, so no additional bias voltages are require for start-up. The module uses (...)

User guide: PDF | HTML