TPS65055

ACTIVE

2.25MHz Dual Step-down Converter with 4 Low Input Voltage LDOs

Product details

Regulated outputs (#) 6 Step-down DC/DC converter 2 Step-up DC/DC converter 0 LDO 4 Vin (min) (V) 1.5 Vin (max) (V) 6.5 Vout (min) (V) 0.8 Vout (max) (V) 3 Iout (max) (A) 0.6 Configurability Hardware configurable Features I2C control Rating Catalog Operating temperature range (°C) -40 to 85 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 1.25 Switching frequency (max) (kHz) 2475 Shutdown current (ISD) (typ) (µA) 18 Switching frequency (typ) (kHz) 2250
Regulated outputs (#) 6 Step-down DC/DC converter 2 Step-up DC/DC converter 0 LDO 4 Vin (min) (V) 1.5 Vin (max) (V) 6.5 Vout (min) (V) 0.8 Vout (max) (V) 3 Iout (max) (A) 0.6 Configurability Hardware configurable Features I2C control Rating Catalog Operating temperature range (°C) -40 to 85 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 1.25 Switching frequency (max) (kHz) 2475 Shutdown current (ISD) (typ) (µA) 18 Switching frequency (typ) (kHz) 2250
VQFN (RSM) 32 16 mm² 4 x 4
  • Up to 95% Efficiency
  • Output Current for DCDC Converters 2 × 0.6 A
  • Two Selectable Fixed Output Voltages 1 V and
    1.2 V for DCDC2
  • VIN Range for DCDC Converters From 2.5 V to 6 V
  • 2.25-MHz Fixed-Frequency Operation
  • Power Save Mode at Light Load Current
  • 180° Out-of-Phase Operation
  • Output Voltage Accuracy in PWM Mode ±1%
  • Low Ripple PFM Mode
  • Total Typical 32-µA Quiescent Current for Both
    DC-DC Converters
  • 100% Duty Cycle for Lowest Dropout
  • 2 General-Purpose 400 mA High PSRR LDOs
  • 2 General-Purpose 200 mA High PSRR LDOs
  • VIN Range for LDOs From 1.5 V to 6.5 V
  • Digital Voltage Selection for the LDOs
  • I2C Compatible Interface
  • Available in a 4 mm × 4 mm 32-Pin QFN Package
  • Up to 95% Efficiency
  • Output Current for DCDC Converters 2 × 0.6 A
  • Two Selectable Fixed Output Voltages 1 V and
    1.2 V for DCDC2
  • VIN Range for DCDC Converters From 2.5 V to 6 V
  • 2.25-MHz Fixed-Frequency Operation
  • Power Save Mode at Light Load Current
  • 180° Out-of-Phase Operation
  • Output Voltage Accuracy in PWM Mode ±1%
  • Low Ripple PFM Mode
  • Total Typical 32-µA Quiescent Current for Both
    DC-DC Converters
  • 100% Duty Cycle for Lowest Dropout
  • 2 General-Purpose 400 mA High PSRR LDOs
  • 2 General-Purpose 200 mA High PSRR LDOs
  • VIN Range for LDOs From 1.5 V to 6.5 V
  • Digital Voltage Selection for the LDOs
  • I2C Compatible Interface
  • Available in a 4 mm × 4 mm 32-Pin QFN Package

The TPS65055 device is an integrated Power Management IC for applications powered by one Li-Ion or Li-Polymer cell, which require multiple power rails.

The TPS65055 provides two highly efficient, 2.25 MHz step-down converters targeted at providing the core voltage and I/O voltage in a processor-based system. Both step-down converters enter a low power mode at light load for maximum efficiency across the widest possible range of load currents.

For low noise applications the device can be forced into fixed frequency PWM mode using the I2C compatible interface. In shutdown mode, current consumption is reduced to less than 1 µA.

The device allows the use of small inductors and capacitors to achieve a small solution size.

The TPS65055 provides an output current of up to 0.6 A on each DC-DC converter.

The TPS65055 also integrates two 400-mA LDO and two 200-mA LDO voltage regulators, which can be turned on/off using separate enable pins on each LDO. Each LDO operates with an input voltage range from 1.5 V to 6.5 V allowing them to be supplied from one of the step-down converters or directly from the main battery. Two digital input pins are used to set the output voltage of the LDOs from a set of 9 different combinations for LDO1 to LDO4. Additionally, the converters can be controlled by an I2C compatible interface.

The TPS65055 is available in a small 32-pin leadless package (4 mm × 4 mm QFN) with a 0.4-mm pitch.

The TPS65055 device is an integrated Power Management IC for applications powered by one Li-Ion or Li-Polymer cell, which require multiple power rails.

The TPS65055 provides two highly efficient, 2.25 MHz step-down converters targeted at providing the core voltage and I/O voltage in a processor-based system. Both step-down converters enter a low power mode at light load for maximum efficiency across the widest possible range of load currents.

For low noise applications the device can be forced into fixed frequency PWM mode using the I2C compatible interface. In shutdown mode, current consumption is reduced to less than 1 µA.

The device allows the use of small inductors and capacitors to achieve a small solution size.

The TPS65055 provides an output current of up to 0.6 A on each DC-DC converter.

The TPS65055 also integrates two 400-mA LDO and two 200-mA LDO voltage regulators, which can be turned on/off using separate enable pins on each LDO. Each LDO operates with an input voltage range from 1.5 V to 6.5 V allowing them to be supplied from one of the step-down converters or directly from the main battery. Two digital input pins are used to set the output voltage of the LDOs from a set of 9 different combinations for LDO1 to LDO4. Additionally, the converters can be controlled by an I2C compatible interface.

The TPS65055 is available in a small 32-pin leadless package (4 mm × 4 mm QFN) with a 0.4-mm pitch.

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Technical documentation

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Type Title Date
* Data sheet TPS65055 2.25-MHz Dual Step-Down Converter With 4 Low-Input Voltage LDOs datasheet (Rev. A) PDF | HTML 30 Jun 2015
Application note Optimizing Resistor Dividers at a Comparator (Rev. B) PDF | HTML 30 Apr 2021
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) 17 Aug 2015
Application note TPS6505x Design Guide 10 Apr 2015

Design & development

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

GUI for evaluation module (EVM)

IPG-UI IPG-UI EVM GUI (Windows Installer)

The IPG-UI GUI can be used to configure multiple PMIC devices to evaluate the features and performance of those devices.  This GUI is built using web-based technologies and supports interacting with the EVM hardware using a USB2ANY adapter board. The USB2ANY Explorer is provided to allow (...)

Supported products & hardware

Supported products & hardware

Products
Multi-channel ICs (PMICs)
TPS65020 6-channel Power Management IC (PMIC) with 3DC/DCs, 3 LDOs, I2C interface and dynamic voltage scaling TPS65023 Power Management IC (PMIC) with 3DC/DCs, 3 LDOs, I2C Interface and DVS TPS65023B 6-channel Power Management IC (PMIC) with 3DC/DCs, 3 LDOs, I2C Interface and DVS TPS65055 2.25MHz Dual Step-down Converter with 4 Low Input Voltage LDOs TPS65084 Programmable mid input voltage range Power Management IC (PMIC) for Braswell processors TPS65086 Configurable multi-rail PMIC for 2S & 3S Li-ion battery-operated devices or non battery operated TPS650861 User programmable 3 converter, 3 controller, 4 LDO, & 3 load switch Power Management IC (PMIC) TPS65090 6-V to 7-V Power Management IC (PMIC) with switchmode charger, 3 DCDCs, 2 LDOs, and 7 load switches TPS65094 Programmable mid input voltage range Power Management IC (PMIC) for Apollo Lake processors TPS65217 Power Management IC (PMIC) w/ 3 DC/DCs, 4 LDOs, linear battery charger & white LED driver TPS652170 User programmable power management IC (PMIC) with 3 DC/DCs, 4 LDOs, battery charger and LED driver TPS65218 Power Management IC (PMIC) for ARM Cortex-A8/A9 SoCs and FPGA TPS6521815 User-programmable Power Management IC (PMIC) with 6 DC/DC converters, 1 LDO, and 3 load switches TPS65218D0 Integrated power management (PMIC) for ARM® Cortex™-A8/A9 SOCs and FPGAs TPS657095 Embedded Camera Module PMIC TPS65910 Integrated Power Management IC (PMIC) w/ 4 DC/DCs, 8 LDOs and RTC in 6x6mm QFN family TPS65911 Integrated Power Management IC (PMIC) with 4 DC/DCs, 9 LDOs and RTC TPS65912 Power Management IC (PMIC) with 4DC/DCs, 10 LDOs, 3 LED outputs & 32kHz RC oscillator TPS659128 PMU for processor power
Hardware development
Evaluation board
BOOSTXL-TPS650861 TPS650861 Customer Programming BoosterPack TPS65023BEVM-664 TPS65023B Evaluation Module TPS65023EVM-205 TPS65023 Evaluation Module TPS650860EVM-116 TPS650860 Evaluation Module TPS65218EVM-100 TPS65218 Evaluation Module
Software
GUI for evaluation module (EVM)
IPG-UI IPG-UI EVM GUI
Support software

TPS65055EVM-SW — TPS65055 EVM Software - Legacy

The TPS65055 EVM Software provides a software interface for the TPS65055 EVM boards. Use this software to change the TPS65055 IC registers via the USB Interface Adapter.
Package Pins CAD symbols, footprints & 3D models
VQFN (RSM) 32 Ultra Librarian

Ordering & quality

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  • MSL rating/Peak reflow
  • MTBF/FIT estimates
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  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

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