TPS63051

ACTIVE

Tiny Single Inductor Buck Boost Converter

Product details

Topology Buck-Boost Vin (Min) (V) 2.5 Vin (Max) (V) 5.5 Vout (Max) (V) 3.3 Vout (Min) (V) 3.3 Duty cycle (Max) (%) 100 Features Adjustable Current Limit, Enable, Light Load Efficiency, Load Disconnect, Power Good, Synchronous Rectification, UVLO Fixed Switch current limit (Typ) (A) 1 Switching frequency (Min) (kHz) 2500 Switching frequency (Max) (kHz) 2500 Iq (Typ) (mA) 0.043 Iout (Max) (A) 0.5 Rating Catalog
Topology Buck-Boost Vin (Min) (V) 2.5 Vin (Max) (V) 5.5 Vout (Max) (V) 3.3 Vout (Min) (V) 3.3 Duty cycle (Max) (%) 100 Features Adjustable Current Limit, Enable, Light Load Efficiency, Load Disconnect, Power Good, Synchronous Rectification, UVLO Fixed Switch current limit (Typ) (A) 1 Switching frequency (Min) (kHz) 2500 Switching frequency (Max) (kHz) 2500 Iq (Typ) (mA) 0.043 Iout (Max) (A) 0.5 Rating Catalog
DSBGA (YFF) 12 2 mm² 1.726 x 1.326 VQFN-HR (RMW) 12 6 mm² 2.5 x 2.5
  • Real buck or boost with seamless transition between buck and boost mode
  • 2.5 V to 5.5 V Input voltage range
  • 0.5-A Continuous output current: VIN ≥ 2.5 V,
    VOUT = 3.3 V
  • Adjustable and fixed output voltage version
  • Efficiency > 90% in boost mode and > 95% in buck mode
  • 2.5-MHz Typical switching frequency
  • Adjustable average input current limit
  • Adjustable soft-start time
  • Device quiescent current < 60 µA
  • Automatic power save mode or forced PWM mode
  • Load disconnect during shutdown
  • Overtemperature protection
  • Small 1.6mm x 1.2mm, 12-pin WCSP and 2.5mm x 2.5mm 12-pin HotRod™ QFN package
  • Create a custom design using the:
  • Real buck or boost with seamless transition between buck and boost mode
  • 2.5 V to 5.5 V Input voltage range
  • 0.5-A Continuous output current: VIN ≥ 2.5 V,
    VOUT = 3.3 V
  • Adjustable and fixed output voltage version
  • Efficiency > 90% in boost mode and > 95% in buck mode
  • 2.5-MHz Typical switching frequency
  • Adjustable average input current limit
  • Adjustable soft-start time
  • Device quiescent current < 60 µA
  • Automatic power save mode or forced PWM mode
  • Load disconnect during shutdown
  • Overtemperature protection
  • Small 1.6mm x 1.2mm, 12-pin WCSP and 2.5mm x 2.5mm 12-pin HotRod™ QFN package
  • Create a custom design using the:

The TPS6305x family of devices is a high efficiency, low quiescent-current buck-boost converter, suitable for applications where the input voltage is higher or lower than the output.

Continuous output current can go as high as 500 mA in boost mode and as high as 1 A in buck mode. The maximum average current in the switches is limited to a typical value of 1 A. The TPS6305x family of devices regulate the output voltage over the complete input voltage range by automatically switching between buck or boost mode depending on the input voltage, ensuring seamless transition between modes.

The buck-boost converter is based on a fixed-frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain the highest efficiency. At low load currents, the converter enters Power Save Mode to maintain high efficiency over the complete load current range.

The PFM/PWM pin allows the user to select between automatic-PFM/PWM mode operation and forced-PWM operation. During PWM mode a fixed-frequency of typically 2.5 MHz is used. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is packaged in a 12-pin DSBGA and in a 12-pin HotRod package.

The TPS6305x family of devices is a high efficiency, low quiescent-current buck-boost converter, suitable for applications where the input voltage is higher or lower than the output.

Continuous output current can go as high as 500 mA in boost mode and as high as 1 A in buck mode. The maximum average current in the switches is limited to a typical value of 1 A. The TPS6305x family of devices regulate the output voltage over the complete input voltage range by automatically switching between buck or boost mode depending on the input voltage, ensuring seamless transition between modes.

The buck-boost converter is based on a fixed-frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain the highest efficiency. At low load currents, the converter enters Power Save Mode to maintain high efficiency over the complete load current range.

The PFM/PWM pin allows the user to select between automatic-PFM/PWM mode operation and forced-PWM operation. During PWM mode a fixed-frequency of typically 2.5 MHz is used. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is packaged in a 12-pin DSBGA and in a 12-pin HotRod package.

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Technical documentation

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Type Title Date
* Data sheet TPS6305x Single Inductor Buck-Boost With 1-A Switches and Adjustable Soft Start datasheet (Rev. D) PDF | HTML 11 May 2017
Application note Layer Design for Reducing Radiated EMI of DC to DC Buck-Boost Converters (Rev. A) PDF | HTML 09 Jun 2021
Application note Buck-boost Converter Battery Life Time Estimation for Wireless Network Cameras (Rev. A) 28 May 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Application note Understanding Undervoltage Lockout in Power Devices (Rev. A) 19 Sep 2018
Application note QFN and SON PCB Attachment (Rev. B) PDF | HTML 24 Aug 2018
Application note Basic Calculations of a 4 Switch Buck-Boost Power Stage (Rev. B) 09 Jul 2018
Design guide USB-C DisplayPort Active Cable Reference Design 29 Aug 2017
EVM User's guide User's Guide for TPS63050EVM-679 13 Jul 2015
Technical article Build it and they will come 16 Jun 2014
Technical article How Small is Small? 03 Sep 2013
EVM User's guide User's Guide for TPS63050EVM-180 12 Jul 2013
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 19 Sep 2011
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17 Jun 2011
Application note Minimizing Ringing at the Switch Node of a Boost Converter 15 Sep 2006

Design & development

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

Evaluation board

TPS63050EVM-679 — TPS63050 QFN Buck-Boost Regulator Evaluation Module

The TPS63050EVM-679 is a customer evaluation module for the TPS63050. The TPS63050 is a small 2.5mm by 2.5mm, RMW package buck-boost regulator with 1A switches. This EVM is set to an output voltage of 3.3V. Being a buck-boost, the input voltage may vary from 2.5V to 5.5V while the EVM maintains the (...)

Not available on TI.com
Evaluation board

TPS63051EVM-180 — TPS63051EVM-180 Buck Boost Regulator Evaluation Module

The TPS63051EVM-180 is a customer evaluation module for the TPS63051. The TPS63051 is a small 1.6mm by 1.2mm, WCSP package buck-boost regulator with 1A switches. This IC and board have a fixed output voltage of 3.3V. Being a buck-boost the input voltage may vary from 2.5V to 5.5V while the EVM (...)
Not available on TI.com
Simulation model

TPS63051 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM952A.ZIP (42 KB) - PSpice Model
Simulation model

TPS63051 TINA-TI Transient Spice Model

SLVM998.ZIP (40 KB) - TINA-TI Spice Model
Simulation model

TPS63051 TINA-TI Transient Reference Design

SLVM999.TSC (165 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 (...)
Calculation tool

Battery Lifetime Estimator (Rev. A)

SLVC808A.ZIP (1889 KB)
Gerber file

TPS6305x EVM Gerbers

SLVC501.ZIP (317 KB)
Reference designs

TIDA-01620 — USB-C™ to DisplayPort Active Cable Reference Design

The USB-C™ to DisplayPort Active Cable reference design is a framework that can enable DisplayPort video signaling over a USB-C connection. Traditionally, DisplayPort connectors are the only way to transfer DisplayPort video but this connector can be large and are not ideal for small (...)
Schematic: PDF
Reference designs

TIDA-00266 — Haptic feedback with Bluetooth® low energy and iOS application reference design

This reference design features the DRV2605 Eccentric Rotating Mass (ERM) and Linear Resonant Actuator (LRA) Haptic Driver with integrated pre-licensed effect library from Immersion.  The board includes an LRA, alkaline battery pack, and can be programmed and controlled with  the (...)
Schematic: PDF
Package Pins Download
DSBGA (YFF) 12 View options
VQFN-HR (RMW) 12 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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