TPS63050

ACTIVE

TPS6305x Single Inductor Buck-Boost with 1-A Switches and Adjustable Soft Start

Product details

Topology Buck-Boost Vin (Min) (V) 2.5 Vin (Max) (V) 5.5 Vout (Max) (V) 5.5 Vout (Min) (V) 2.5 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) 5.5 Vout (Min) (V) 2.5 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 Different Methods to Drive LEDs Using TPS63XXX Buck-Boost Converters (Rev. D) 04 Aug 2021
Application note A Topical Index of TI Low-Power Buck-Boost Converter Application Notes (Rev. A) PDF | HTML 09 Jun 2021
Application note Layer Design for Reducing Radiated EMI of DC to DC Buck-Boost Converters (Rev. A) PDF | HTML 09 Jun 2021
Application note Improving Load Transient Response for Controlled Loads 12 Sep 2019
Application note Buck-boost Converter Battery Life Time Estimation for Wireless Network Cameras (Rev. A) 28 May 2019
Application note Buck-Boost Converters Solving Power Challenges in Optical Modules 13 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
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application notes High Efficiency Battery Powered High Brightness LED Driver Using the TPS63000 31 Mar 2016
Technical article Small, efficient buck-boost for portable industrial equipment 02 Dec 2015
EVM User's guide User's Guide for TPS63050EVM-679 13 Jul 2015
Technical article When to use a (4-switch) buck-boost converter 23 Aug 2014
EVM User's guide User's Guide for TPS63050EVM-180 12 Jul 2013
Application note Extending the Soft Start Time in the TPS63010 Buck-Boost Converter 05 Dec 2012
Analog Design Journal Design considerations for a resistive feedback divider in a DC/DC converter 26 Apr 2012
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
Application note Dynamically Adjustable Output Using the TPS63000 15 Aug 2006

Design & development

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

Evaluation board

TPS63050EVM-180 — TPS63050 DSBGA Buck-Boost Regulator Evaluation Module

The TPS63050EVM-180 is a customer evaluation module for the TPS63050. The TPS63050 is a small 1.6mm by 1.2mm, WCSP 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 (...)

User guide: PDF
Not available on TI.com
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 (...)

User guide: PDF
Not available on TI.com
Simulation model

Unencrypted TPS63050 PSpice Transient Model Package (Rev. B)

SLVM997B.ZIP (87 KB) - PSpice Model
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-00725 — Wide Bandwidth Optical Front-end Reference Design

This reference design implements and measures a complete 120MHz wide bandwidth optical front end comprising a high speed transimpedance amplifier, fully differential amplifier, and high speed 14-bit 160MSPS ADC with JESD204B interface.  Hardware and software are provided to evaluate the (...)
Schematic: PDF
Reference designs

TIDA-00886 — Low Power RF PLL-Synthesizer Operating From a Single Cell Battery Reference Design

The TIDA-00886 consists of the LMX2571,  high-performance, wideband PLLatinum™ low-power RF synthesizer, powered by a single cell battery using TPS63050 a DC-DC buck-boost converter.  The TIDA-00886 shows that the DC-DC buck-boost converter has a small to negligible effect on (...)
Schematic: PDF
Reference designs

TIDA-00823 — 16-Bit 1-GSPS Digitizer Reference Design with AC and DC Coupled Fixed Gain Amplifier

This reference design discusses the use and performance of the Ultra-Wideband, Fixed-gain high-speed amplifier, the LMH3401 to drive the high-speed analog-to-digital converter (ADC), the ADS54J60 device. Different options for common-mode voltages, power supplies, and interfaces are discussed and (...)
Schematic: PDF
Reference designs

TIDA-00822 — 16-Bit 1-GSPS Digitizer Reference Design with AC and DC Coupled Variable Gain Amplifier

This reference design discusses the use and performance of the Digital Variable-Gain high-speed amplifier, the LMH6401, to drive the high-speed analog-to-digital converter (ADC), the ADS54J60 device. Different options for common-mode voltages, power supplies, and interfaces are discussed and (...)
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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