TPS40303

VSON (DRC)

10

9 mm² 3 x 3

Input Voltage Range From 3 V to 20 V
300-kHz (TPS40303), 600-kHz (TPS40304), and 1.2-MHz (TPS40305) Switching Frequencies
High- and Low-Side FET R_DS(on) Current Sensing
Programmable Thermally Compensated OCP Levels
Programmable Soft Start
600-mV, 1% Reference Voltage
Voltage Feed-Forward Compensation
Supports Prebiased Output
Frequency Spread Spectrum
Thermal Shutdown Protection at 145°C
10-Pin 3-mm × 3-mm VSON Package With Ground Connection to Thermal Pad
Create a Custom Design Using the TPS4030x With the WEBENCH^® Power Designer

Input Voltage Range From 3 V to 20 V
300-kHz (TPS40303), 600-kHz (TPS40304), and 1.2-MHz (TPS40305) Switching Frequencies
High- and Low-Side FET R_DS(on) Current Sensing
Programmable Thermally Compensated OCP Levels
Programmable Soft Start
600-mV, 1% Reference Voltage
Voltage Feed-Forward Compensation
Supports Prebiased Output
Frequency Spread Spectrum
Thermal Shutdown Protection at 145°C
10-Pin 3-mm × 3-mm VSON Package With Ground Connection to Thermal Pad
Create a Custom Design Using the TPS4030x With the WEBENCH^® Power Designer

The TPS4030x is a family of cost-optimized synchronous buck controllers that operate from 3-V to 20-V input. The controller implements a voltage-mode control architecture with input-voltage feed-forward compensation that responds instantly to a change in input voltage. The switching frequency is fixed at 300 kHz, 600 kHz, or 1.2 MHz.

The frequency spread-spectrum (FSS) feature adds to the switching frequency, significantly reducing the peak EMI noise and making it much easier to comply with EMI standards.

The TPS4030x offers design with a variety of user-programmable functions, including soft start, overcurrent protection (OCP) levels, and loop compensation.

OCP level may be programmed by a single external resistor connected from the LDRV pin to circuit ground. During initial power on, the TPS4030x enters a calibration cycle, measures the voltage at the LDRV pin, and sets an internal OCP voltage level. During operation, the programmed OCP voltage level is compared to the voltage drop across the low-side FET when it is on to determine whether there is an overcurrent condition. The TPS4030x then enters a shutdown and restart cycle until the fault is removed.

The TPS4030x is a family of cost-optimized synchronous buck controllers that operate from 3-V to 20-V input. The controller implements a voltage-mode control architecture with input-voltage feed-forward compensation that responds instantly to a change in input voltage. The switching frequency is fixed at 300 kHz, 600 kHz, or 1.2 MHz.

The frequency spread-spectrum (FSS) feature adds to the switching frequency, significantly reducing the peak EMI noise and making it much easier to comply with EMI standards.

The TPS4030x offers design with a variety of user-programmable functions, including soft start, overcurrent protection (OCP) levels, and loop compensation.

OCP level may be programmed by a single external resistor connected from the LDRV pin to circuit ground. During initial power on, the TPS4030x enters a calibration cycle, measures the voltage at the LDRV pin, and sets an internal OCP voltage level. During operation, the programmed OCP voltage level is compared to the voltage drop across the low-side FET when it is on to determine whether there is an overcurrent condition. The TPS4030x then enters a shutdown and restart cycle until the fault is removed.

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TPS40345

ACTIVE

3-V to 20-V, 25-A, synchronous buck controller for cost-optimized applications TPS40303 is 300-kHz with 1% Vref over temperature while TPS40345 is 600-kHz with 1.3% Vref over temperature.

Technical documentation

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	Type	Title	Date
*	Data sheet	TPS4030x 3-V to 20-V Input, Voltage Mode, Synchronous Buck Controller datasheet (Rev. D)	12 Mar 2018
	User guide	TPS40305 Buck Controller Evaluation Module User's Guide (Rev. A)	12 Jan 2022
	Selection guide	Power Management Guide 2018 (Rev. R)	25 Jun 2018
	Analog design journal	Common mistakes made in controller designs for power converters	26 Mar 2018
	Selection guide	DC/DC Buck Controller Solutions Selection Guide	06 Feb 2018
	Technical article	Power Tips: Power sharing in USB Type-C applications	08 Jun 2016
	Application note	SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC	22 Feb 2016
	User guide	CSD163CEVM-591 User's Guide	02 Mar 2010
	User guide	TPS40304EVM-353 User's Guide	18 Feb 2010

Design & development

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

Simulation model

TPS40303 Unencrypted PSpice Transient Model Package (Rev. A)

SLIM115A.ZIP (92 KB) - PSpice Model

Simulation model

TPS40303 TINA-TI Transient Spice Model

SLIM233.ZIP (74 KB) - TINA-TI Spice Model

Simulation model

TPS40303 TINA-TI Start-up Reference Design

SLIM234.TSC (277 KB) - TINA-TI Reference Design

Simulation model

TPS40303 TINA-TI Steady State Reference Design

SLIM235.TSC (267 KB) - TINA-TI Reference Design

Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)

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Calculation tool

Type III Compensation Calculation Tool (Rev. E)

SLUC263E.ZIP (185 KB)