TPS54328

Name: TPS54328
Brand: TI
SKU: TPS54328
Price: 0.522 USD

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4.5V to 18V Input, 3-A Synchronous Step-Down Converter with Eco-mode™

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Data sheet

document-pdfAcrobat TPS54328 4.5-V to 18-V Input, 3-A Synchronous Step-Down Converter With Eco-Mode™ datasheet (Rev. D) PDF | HTML

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TPS54328

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Data sheet

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Product details

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Topology

Buck

Type

Converter

Iout (max) (A)

3

Vin (min) (V)

4.5

Vin (max) (V)

18

Switching frequency (min) (kHz)

700

Switching frequency (max) (kHz)

700

Features

Enable, Light Load Efficiency, Soft Start Adjustable, Synchronous Rectification

Control mode

D-CAP2

Vout (min) (V)

0.76

Vout (max) (V)

7

Iq (typ) (µA)

800

Duty cycle (max) (%)

65

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Topology

Buck

Type

Converter

Iout (max) (A)

3

Vin (min) (V)

4.5

Vin (max) (V)

18

Switching frequency (min) (kHz)

700

Switching frequency (max) (kHz)

700

Features

Enable, Light Load Efficiency, Soft Start Adjustable, Synchronous Rectification

Control mode

D-CAP2

Vout (min) (V)

0.76

Vout (max) (V)

7

Iq (typ) (µA)

800

Duty cycle (max) (%)

65

HSOIC (DDA)

8

29.4 mm² 4.9 x 6

VSON (DRC)

10

9 mm² 3 x 3

D-CAP2™ Mode Enables Fast Transient Response
Low Output Ripple and Allows Ceramic Output Capacitor
Wide Input Voltage Range: 4.5 V to 18 V
Output Voltage Range: 0.76 V to 7 V
Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications
- 100 mΩ (High-Side) and 70 mΩ (Low-Side)
High Efficiency, Less Than 10 µA at Shutdown
High Initial Bandgap Reference Accuracy
Adjustable Soft Start
Pre-Biased Soft Start
700-kHz Switching Frequency (f_SW)
Cycle-By-Cycle Overcurrent Limit
Auto-Skip Eco-Mode™ for High Efficiency at Light Load

D-CAP2™ Mode Enables Fast Transient Response
Low Output Ripple and Allows Ceramic Output Capacitor
Wide Input Voltage Range: 4.5 V to 18 V
Output Voltage Range: 0.76 V to 7 V
Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications
- 100 mΩ (High-Side) and 70 mΩ (Low-Side)
High Efficiency, Less Than 10 µA at Shutdown
High Initial Bandgap Reference Accuracy
Adjustable Soft Start
Pre-Biased Soft Start
700-kHz Switching Frequency (f_SW)
Cycle-By-Cycle Overcurrent Limit
Auto-Skip Eco-Mode™ for High Efficiency at Light Load

The TPS54328 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54328 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54328 uses the D-CAP2 mode control that provides a fast transient response with no external compensation components.

The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode operation at light loads. Eco-mode allows the TPS54328 to maintain high efficiency during lighter load conditions. The TPS54328 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V input (V_IN).

The output voltage can be programmed from 0.76 V to 7 V. The device also features an adjustable soft start time. The TPS54328 is available in 8-pin DDA and 10-pin DRC packages, and is designed to operate over the ambient temperature range of –40°C to 85°C.

The TPS54328 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54328 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54328 uses the D-CAP2 mode control that provides a fast transient response with no external compensation components.

The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode operation at light loads. Eco-mode allows the TPS54328 to maintain high efficiency during lighter load conditions. The TPS54328 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V input (V_IN).

The output voltage can be programmed from 0.76 V to 7 V. The device also features an adjustable soft start time. The TPS54328 is available in 8-pin DDA and 10-pin DRC packages, and is designed to operate over the ambient temperature range of –40°C to 85°C.

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Technical documentation

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	Type	Title		Date
*	Data sheet	TPS54328 4.5-V to 18-V Input, 3-A Synchronous Step-Down Converter With Eco-Mode™ datasheet (Rev. D)	PDF \| HTML	17 Aug 2016
	User guide	TPS54328 Step-Down Converter Evaluation Module User's Guide (Rev. A)	PDF \| HTML	11 Oct 2021
	Selection guide	Power Management Guide 2018 (Rev. R)		25 Jun 2018
	Application note	Optimize Output Filter on D-CAP2 for Stability Improvement		13 Jun 2017
	Application note	D-CAP2 Frequency Response Model, based on frequency domain analysis of Fixed On-		02 Jan 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS54328EVM-686 — Evaluation Module for TPS54328 3-A Synchronous Step-Down Converter with Eco-Mode

The TPS54328EVM-686 is a fully assembled and tested circuit for evaluating the TPS54328 synchronous step-down converter. The TPS54328EVM-686 operates from a 4.5-V to 18-V input and provides a 1.05-V output up to 3-A load. The main control loop of TPS54328 uses D-CAP2™ control mode, which (...)

User guide: PDF | HTML