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TPS40303

ACTIVE

3-V to 20-V, 25-A, 300-kHz synchronous buck controller with FSS

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Data sheet

TPS40303

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Buck Iout (max) (A) 25 Vin (max) (V) 20 Vin (min) (V) 3 Vout (max) (V) 18 Vout (min) (V) 0.6 Control mode Voltage mode Features Enable, Power good, Prebias startup, Spread Spectrum, Synchronous rectification EMI features Spread Spectrum Duty cycle (max) (%) 90 Iq (typ) (A) 0.0025 Number of phases 1 Operating temperature range (°C) -40 to 125
Rating Catalog Topology Buck Iout (max) (A) 25 Vin (max) (V) 20 Vin (min) (V) 3 Vout (max) (V) 18 Vout (min) (V) 0.6 Control mode Voltage mode Features Enable, Power good, Prebias startup, Spread Spectrum, Synchronous rectification EMI features Spread Spectrum Duty cycle (max) (%) 90 Iq (typ) (A) 0.0025 Number of phases 1 Operating temperature range (°C) -40 to 125
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 RDS(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 RDS(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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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS4030x 3-V to 20-V Input, Voltage Mode, Synchronous Buck Controller datasheet (Rev. D) PDF | HTML 12 Mar 2018
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 PDF | HTML 08 Jun 2016
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC 22 Feb 2016

Design & development

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

Simulation model

TPS40303 TINA-TI Start-up Reference Design

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

TPS40303 TINA-TI Steady State Reference Design

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

TPS40303 TINA-TI Transient Spice Model

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

TPS40303 Unencrypted PSpice Transient Model Package (Rev. A)

SLIM115A.ZIP (92 KB) - PSpice Model
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Calculation tool

SLUC263 — Type III Compensation Calculation Tool

Supported products & hardware

Supported products & hardware
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Reference designs

PMP20172 — 36W USB Dual Port USB Type-C™ PD Reference Design with Port Power Management DC/DC Charger

The PMP20172 reference design provides up to 36W on two USB Type-C outputs.  Input is a 17VDC bus.  The two outputs implement port power management.  If only one port is in use, it is allocated the full 36W.  If both ports are in use, power is split into 18W on each port.  (...)
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