Product details

Vin (Min) (V) 1.8 Vin (Max) (V) 5.5 Vout (Min) (V) 4.5 Vout (Max) (V) 28 Switch current limit (Typ) (A) 0.9 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 850 Switching frequency (Max) (kHz) 1250 Iq (Typ) (mA) 0.11 Features Enable, Light Load Efficiency, Load Disconnect Duty cycle (Max) (%) 90 Operating temperature range (C) -40 to 125 Rating Catalog
Vin (Min) (V) 1.8 Vin (Max) (V) 5.5 Vout (Min) (V) 4.5 Vout (Max) (V) 28 Switch current limit (Typ) (A) 0.9 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 850 Switching frequency (Max) (kHz) 1250 Iq (Typ) (mA) 0.11 Features Enable, Light Load Efficiency, Load Disconnect Duty cycle (Max) (%) 90 Operating temperature range (C) -40 to 125 Rating Catalog
DSBGA (YFF) 6 0 mm² 1.232 x .832
  • Input Voltage Range: 1.8 V to 5.5 V, 1.6 V after
    Startup
  • Output Voltage Up to 28 V
  • Integrated Power Diode and Isolation Switch
  • 900-mA (typical) Switch Current
  • Up to 85% Efficiency at 3.6-V Input and 12-V
    Output
  • 500-nA Ultra-low Shutdown Current
  • ±2% Output Voltage Accuracy
  • Power Save Operation Mode at Light Load
  • Internal 10-ms Soft Start Time
  • True Disconnection between Input and Output
    during Shutdown
  • Output Short Circuit Protection
  • Output Over-Voltage Protection
  • Thermal Shutdown Protection
  • 0.80-mm × 1.20-mm WCSP package
  • Input Voltage Range: 1.8 V to 5.5 V, 1.6 V after
    Startup
  • Output Voltage Up to 28 V
  • Integrated Power Diode and Isolation Switch
  • 900-mA (typical) Switch Current
  • Up to 85% Efficiency at 3.6-V Input and 12-V
    Output
  • 500-nA Ultra-low Shutdown Current
  • ±2% Output Voltage Accuracy
  • Power Save Operation Mode at Light Load
  • Internal 10-ms Soft Start Time
  • True Disconnection between Input and Output
    during Shutdown
  • Output Short Circuit Protection
  • Output Over-Voltage Protection
  • Thermal Shutdown Protection
  • 0.80-mm × 1.20-mm WCSP package

The TPS61046 is a highly integrated boost converter designed for applications requiring high voltage and tiny solution size such as PMOLED panel and sensor module. The TPS61046 integrates a 30-V power switch, input/output isolation switch, and power diode. It can output up to 28 V from input of a Li+ battery or two cell alkaline batteries in series.

The TPS61046 operates with a switching frequency at 1.0 MHz. This allows the use of small external components. The TPS61046 has an internal default 12-V output voltage setting by connecting the FB pin to the VIN pin. Thus it only needs three external components to get 12-V output voltage. Together with WCSP package, the TPS61046 gives a very small overall solution size. The TPS61046 has typical 900-mA switch current limit. It has 10-ms built-in soft start time to minimize the inrush current. When the TPS61046 is in shutdown mode, the isolation switch disconnects the output from input to minimize the leakage current. The TPS61064 also implements output short circuit protection, output over-voltage protection and thermal shutdown.

The TPS61046 is available in a 6-pin 0.80-mm × 1.20-mm WCSP package.

The TPS61046 is a highly integrated boost converter designed for applications requiring high voltage and tiny solution size such as PMOLED panel and sensor module. The TPS61046 integrates a 30-V power switch, input/output isolation switch, and power diode. It can output up to 28 V from input of a Li+ battery or two cell alkaline batteries in series.

The TPS61046 operates with a switching frequency at 1.0 MHz. This allows the use of small external components. The TPS61046 has an internal default 12-V output voltage setting by connecting the FB pin to the VIN pin. Thus it only needs three external components to get 12-V output voltage. Together with WCSP package, the TPS61046 gives a very small overall solution size. The TPS61046 has typical 900-mA switch current limit. It has 10-ms built-in soft start time to minimize the inrush current. When the TPS61046 is in shutdown mode, the isolation switch disconnects the output from input to minimize the leakage current. The TPS61064 also implements output short circuit protection, output over-voltage protection and thermal shutdown.

The TPS61046 is available in a 6-pin 0.80-mm × 1.20-mm WCSP package.

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Technical documentation

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Type Title Date
* Data sheet TPS61046 28-V Output Voltage Boost Converter in WCSP Package datasheet 15 Apr 2015
Application note Using External Bias to Broaden Input Voltage Range of Boost Converters 08 Nov 2021
Technical article Do all rails need low Iq? 15 Jul 2019
Application note AN-1112 DSBGA Wafer Level Chip Scale Package (Rev. AI) 14 Jun 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Technical article Power a RS-485 transceiver with a high efficiency flyback converter 27 Dec 2017
Application note Input Current Limit Solution for USB-Supplied Power System 03 Aug 2017
Application note How to Select a Proper Inductor for Low Power Boost Converter 03 Jun 2016
Application note Five Steps to a Good PCB Layout of the Boost Converter 03 May 2016
Test report Power Management Reference Design for a Wearable Device with Wireless Charging (Rev. A) 14 Apr 2016
Technical article A super-small, high-efficiency PMOLED reference design for wearables 20 Jan 2016
Technical article Smaller size, higher efficiency for electronic point-of-sale thermal printers 07 Oct 2015
User guide TPS61046 Evaluation Module User's Guide 28 Apr 2015
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. C) 08 Jan 2014
Application note Automated Frequency Response Analyzer 09 Oct 2013
Analog design journal Design considerations for a resistive feedback divider in a DC/DC converter 26 Apr 2012
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

TPS61046EVM-682 — TPS61046 28V Boost Converter in WCSP Package Evaluation Module

This EVM is used to evaluate the 28V boost converter TPS61046, which is a highly integrated boost converter designed for applications requiring high voltage and tiny solution size such as PMOLED panel. There are two TPS61046 evaluation circuits in the EVM: one is adjustable VOUT version in which (...)

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Simulation model

Unencrypted TPS61046 PSpice Transient Model Package (Rev. A)

SLVMB38A.ZIP (27 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 (...)
Reference designs

PMP11311 — Power Reference Design for a Wearable Device with Wireless Charging using the bq51003 and bq25120

Wearable devices require advanced power management to achieve long battery run times with always-on functionality.  Additionally, the devices need to use small rechargeable batteries and enable small footprint designs.  This application note shows the implementation of a scalable power (...)
Reference designs

TIDA-00462 — Ultrasonic Distance Measurement BoosterPack Reference Design

The TIDA-00462 ultrasonic distance measurement reference design can measure the distance up to 99 inches with an accuracy of ±1.5 inches. The scope of this design is to give you a head-start in integrating our industrial ultra-low-power MCU, analog signal conditioning and power (...)
Reference designs

PMP9801 — 5 V-Output, 4000-V Isolated Power Supply Reference Design for RS485 Applications

This reference design showcases a 5-V output, 4000-V isolated Flyback DC/DC converter for RS485 applications. Using the boost converter TPS61046, the circuit supports wide input voltage range and up to 250mA output current with 78% efficiency from a 10-V input. The reference design uses an adaptive (...)
Reference designs

TIDA-00712 — Smartwatch Battery Management Solution Reference Design

This reference design is for smartwatch battery management solution (BMS). It is suitable for low-power wearable devices like smartwatch applications. The design includes an ultra-low current 1 cell Li-ion linear charger; a highly integrated Qi-compliant wireless power receiver; a (...)
Reference designs

PMP9775 — Reference Design - PMOLED Display Power Supply with TPS61046

A PMOLED display is mostly used in the wearable device because of its low power consumption and low cost. This reference design is to demonstrate the TPS61046’s application in powering a PMOLED display. It includes a MCU MSP430G2230, boost converter TPS61046 and a 32 x 128 pixels PMOLED (...)
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