TPS62902

ACTIVE

3-V to 17-V, 2-A high-efficiency low-IQ buck converter in 1.5-mm × 2-mm QFN package

Product details

Rating Catalog Operating temperature range (°C) -40 to 165 Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 17 Switching frequency (min) (kHz) 1000 Switching frequency (max) (kHz) 2500 Features Enable, Forced PWM, Light Load Efficiency, Output discharge, Over Current Protection, Power good, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO adjustable Control mode DCS-Control Vout (min) (V) 0.4 Vout (max) (V) 5.5 Iq (typ) (µA) 4 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 165 Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 17 Switching frequency (min) (kHz) 1000 Switching frequency (max) (kHz) 2500 Features Enable, Forced PWM, Light Load Efficiency, Output discharge, Over Current Protection, Power good, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO adjustable Control mode DCS-Control Vout (min) (V) 0.4 Vout (max) (V) 5.5 Iq (typ) (µA) 4 Duty cycle (max) (%) 100
VQFN-HR (RPJ) 9 3 mm² 2 x 1.5
  • High efficiency for wide duty cycle and load range
    • I Q: 4 µA typical
    • Selectable switching frequency of 2.5 MHz and 1.0 MHz
    • R DS(ON): 62-mΩ high side, 22-mΩ low side
    • Automatic efficiency enhancement (AEE)
  • Small 1.5-mm × 2.0-mm VQFN package with 0.5-mm pitch
  • Up to 2-A continuous output current
  • ±0.9% feedback voltage accuracy across temp (-40°C to 150°C)
  • Configurable ouput voltage options:
    • V FB external divider: 0.6 V to 5.5 V
    • V SET internal divider: 16 options between 0.4 V and 5.5 V
  • DCS-Control™ topology with 100% mode
  • Highly flexible and easy to use
    • Optimized pinout for single-layer routing
    • Precise enable input
    • Forced PWM or auto power save mode
    • Power good output
    • Selectable active output discharge
    • Adjustable soft start and tracking
  • No external bootstrap capacitor required
  • Create a custom design using the TPS62902 using the WEBENCH Power Designer
  • High efficiency for wide duty cycle and load range
    • I Q: 4 µA typical
    • Selectable switching frequency of 2.5 MHz and 1.0 MHz
    • R DS(ON): 62-mΩ high side, 22-mΩ low side
    • Automatic efficiency enhancement (AEE)
  • Small 1.5-mm × 2.0-mm VQFN package with 0.5-mm pitch
  • Up to 2-A continuous output current
  • ±0.9% feedback voltage accuracy across temp (-40°C to 150°C)
  • Configurable ouput voltage options:
    • V FB external divider: 0.6 V to 5.5 V
    • V SET internal divider: 16 options between 0.4 V and 5.5 V
  • DCS-Control™ topology with 100% mode
  • Highly flexible and easy to use
    • Optimized pinout for single-layer routing
    • Precise enable input
    • Forced PWM or auto power save mode
    • Power good output
    • Selectable active output discharge
    • Adjustable soft start and tracking
  • No external bootstrap capacitor required
  • Create a custom design using the TPS62902 using the WEBENCH Power Designer

The TPS62902 is a highly-efficient, small, and flexible synchronous step-down DC-DC converter that is easy to use. A selectable switching frequency of 2.5 MHz or 1.0 MHz allows the use of small inductors and provides fast transient response. The device supports high V OUT accuracy of ± 1% with DCS-Control topology. The wide input voltage range of 3-V to 17-V supports a variety of nominal inputs, like 12-V supply rails, single-cell or multi-cell Li-Ion, and 5-V or 3.3-V rails.

The TPS62902 can automatically enter power save mode (if auto PFM/PWM is selected) at light loads to maintain high efficiency. Additionally, to provide high efficiency at very small loads, the device has a low typical quiescent current of 4 µA. AEE, if enabled, provides high efficiency across V IN, V OUT, and load current. The device includes a S-CONF/MODE input to set the internal/external divider, switching frequency, output voltage discharge, and automatic power save mode or forced PWM operation.

The device is available in small 9-pin VQFN package measuring 1.50 mm × 2.00 mm with 0.5-mm pitch.

The TPS62902 is a highly-efficient, small, and flexible synchronous step-down DC-DC converter that is easy to use. A selectable switching frequency of 2.5 MHz or 1.0 MHz allows the use of small inductors and provides fast transient response. The device supports high V OUT accuracy of ± 1% with DCS-Control topology. The wide input voltage range of 3-V to 17-V supports a variety of nominal inputs, like 12-V supply rails, single-cell or multi-cell Li-Ion, and 5-V or 3.3-V rails.

The TPS62902 can automatically enter power save mode (if auto PFM/PWM is selected) at light loads to maintain high efficiency. Additionally, to provide high efficiency at very small loads, the device has a low typical quiescent current of 4 µA. AEE, if enabled, provides high efficiency across V IN, V OUT, and load current. The device includes a S-CONF/MODE input to set the internal/external divider, switching frequency, output voltage discharge, and automatic power save mode or forced PWM operation.

The device is available in small 9-pin VQFN package measuring 1.50 mm × 2.00 mm with 0.5-mm pitch.

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Technical documentation

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Type Title Date
* Data sheet TPS62902, 3-V to 17-V, High Efficiency and Low IQBuck Converter in 1.5-mm × 2-mm QFN Package datasheet (Rev. A) PDF | HTML 06 Nov 2023
Application note How to Best Use TPS62903 for a Given Application Requirement PDF | HTML 13 Aug 2021
Application note Comparison of TPS6290x vs. TPS621x0 PDF | HTML 23 Jul 2021
Application brief Multi-Function Pins for Easy Designing PDF | HTML 07 Jul 2021
EVM User's guide TPS6290x Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 07 May 2021
Certificate TPS62902EVM-069 EU RoHS Declaration of Conformity (DoC) 15 Dec 2020

Design & development

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

Evaluation board

TPS62902EVM-069 — 17-VIN, 2-A, low IQ buck converter in 1.5-mm x 2-mm QFN package evaluation module

The TPS62902EVM-069 (BSR069-002) evaluation module (EVM) facilitates the evaluation of the TPS62902 2-A buck converter in small 1.5-mm by 2-mm QFN package. The EVM outputs a 1.8-V output voltage from input voltages between 3 V and 17 V. The TPS62902 is a high-efficiency, low IQ buck converter for (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS62902 PSpice Transient Model

SLVMDO7.ZIP (239 KB) - PSpice Model
Simulation model

TPS62902 SIMPLIS Transient and Average Model

SLVMDP2.ZIP (901 KB) - SIMPLIS Model
Gerber file

BSR069A Gerbers

SNVC242.ZIP (394 KB)
Package Pins CAD symbols, footprints & 3D models
VQFN-HR (RPJ) 9 Ultra Librarian

Ordering & quality

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Support & training

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