TPS62420

ACTIVE

Dual, Adjustable, 600mA and 1000mA, 2.25MHz Step-Down Converter with 1-Wire Interface in QFN

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Product details

Parameters

Vin (Min) (V) 2.5 Vin (Max) (V) 6 Vout (Min) (V) 0.6 Vout (Max) (V) 6 Iout (Max) (A) 0.6 Iq (Typ) (mA) 0.032 Switching frequency (Min) (kHz) 2000 Switching frequency (Max) (kHz) 2500 Features Enable, Forced PWM, Light Load Efficiency, Synchronous Rectification, Adaptive/Dynamic Voltage Scaling Operating temperature range (C) -40 to 85 Rating Catalog Regulated outputs (#) 2 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VSON (DRC) 10 9 mm² 3.00 x 3.00 VSON (DRC) 10 9 mm² 3 x 3 open-in-new Find other Buck converters (integrated switch)

Features

  • High Efficiency up to 95%
  • VIN Range from 2.5 V to 6 V
  • 2.25-MHz Fixed Frequency Operation
  • Output Current 600 mA and 1000 mA
  • Adjustable Output Voltage from 0.6 V to VIN
  • Pin Selectable Output Voltage Supports Simple
    Dynamic VoltageScaling
  • Optional EasyScale One-Pin Serial Interface for
    Dynamic Output Voltage Adjustment
  • Power-Save Mode at Light Load Currents
  • 180° Out of Phase Operation
  • Output Voltage Accuracy in PWM Mode ±1%
  • Typical 32-µA Quiescent Current for both
    Converters
  • 100% Duty Cycle for Lowest Dropout
  • Available in a 10-Pin VSON (3 mm × 3 mm)
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Description

The TPS6242x device is a synchronous dual step-down DC–DC converter. It provides two independent output voltage rails powered by 1-cell Li-Ion or 3-cell NiMH/NiCD batteries. The device is also suitable to operate from a standard 3.3-V or 5-V voltage rail.

With an input voltage range of 2.5 V to 6 V, the TPS6242x is ideal for battery-powered portable applications like smart phones, PDAs, and other portable equipment.

With the EasyScale™ serial interface the output voltages can be modified during operation. It therefore supports dynamic voltage scaling for low power DSP and processors.

The TPS6242x operates at 2.25-MHz fixed switching frequency and enter the power-save mode operation at light load currents to maintain high efficiency over the entire load current range. For low-noise applications the devices can be forced into fixed-frequency PWM mode by pulling the MODE/DATA pin High. In the shutdown mode, the current consumption is reduced to 1.2 µA. The device allows the use of small inductors and capacitors to achieve a small solution size.

The TPS6242x operates over a free-air temperature range of –40°C to 85°C. It is available in a 10-pin leadless package (3 mm × 3 mm VSON)

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet TPS6242x 2.25-MHz 600-mA and 1000-mA Dual Step-Down Converter in Small 3-mm × 3-mm VSON Package datasheet (Rev. D) Jul. 31, 2015
Application notes Methods of output-voltage adjustment for DC/DC converters Jun. 14, 2019
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application notes Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Application notes QFN and SON PCB Attachment (Rev. B) Aug. 24, 2018
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application notes Understanding 100% mode in low-power DC/DC converters Jun. 22, 2018
Application notes A Topical Index of TI Low Power Buck DC/DC Application Notes Jan. 17, 2018
Application notes Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) Nov. 29, 2017
Application notes Achieving a clean startup by using a DC/DC converter with a precise enable-pin t Oct. 24, 2017
Application notes Extending the Soft Start Time Without a Soft Start Pin (Rev. B) Jun. 15, 2017
Application notes Testing tips for applying external power to supply outputs without an input volt Oct. 24, 2016
Application notes Basic Calculation of a Buck Converter's Power Stage (Rev. B) Aug. 17, 2015
Application notes Five steps to a great PCB layout for a step-down converter Jan. 29, 2015
User guides TPS624xxEVM-167 User Guide (Rev. A) Nov. 02, 2013
Application notes Design considerations for a resistive feedback divider in a DC/DC converter Apr. 26, 2012
Application notes Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) Jan. 13, 2012
Application notes IQ: What it is, what it isn’t, and how to use it Jun. 17, 2011

Design & development

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

Hardware development

EVALUATION BOARDS Download
TPS62401 Evaluation Module
TPS62401EVM-167
document-generic User guide
49
Description

The TPS62401EVM-167 is an evaluation tool for the TPS62401 which is a 2.25 MHz dual, step down converter in a small 3x3 mm2 QFN package. The TPS62401 has a 2.5 V to 6 V input voltage supply and offers fixed output voltages of 1.1 V/1.575 V at 400 mA and 1.8 V at (...)

Features
  • Efficiency: 95%
  • Vin Range: 2.5 V to 6 V
  • Output Current: 400 mA and 600 mA
  • Fixed output voltage of 1.1 V/1.575 V at 400mA and 1.8V at 600 mA
  • Available in 10-pin 3x3 QFN package
  • Power Save Mode at Light Load Currents
  • Typ. 32 uA Quiescent current for both converters
  • EasyScale one pin serial interface for dynamic (...)
EVALUATION BOARDS Download
TPS62420 Evaluation Module
TPS62420EVM-167
document-generic User guide
49
Description

The TPS62420EVM-167 is an evaluation tool for the TPS62420 which is a 2.25 MHz dual, step down converter in a small 3x3 mm2 QFN package. The TPS62420 can supply voltages from 0.6 V to 6 V from a 2.5 V to 6 V input, and provides two output rails of up to 600 mA/1000 mA (...)

Features
  • Efficiency: 95%
  • Vin Range: 2.5 V to 6 V
  • Output Current: 600 mA and 1000 mA
  • Adjustable output voltage from 0.6 V to Vin
  • Available in 10-pin 3x3 QFN package
  • Power Save Mode at Light Load Currents
  • Typ. 32 uA Quiescent current for both converters
  • EasyScale one pin serial interface for dynamic output voltage (...)
DAUGHTER CARDS Download
document-generic User guide
159
Description

To get started developing with this controlCARD:
Step 1: Buy the controlCard
Step 2: Follow the get started section

TMDSCNCD28379D is an HSEC180 controlCARD based evaluation and development tool for the F2837xD,  F2837xS, and F2807x series in the TI MCU. controlCARDs are ideal to use for (...)

Features

Hardware Features

  • TMDSCNCD28379D: TMS320F28379D HSEC180 based controlCARD
    • Isolated XDS100v2 USB-to-JTAG Debug Probe enables real-time in-system programming and debugging
  • Standard 180-pin HSEC interface
  • Analog I/O, digital I/O and JTAG signals at card interface
  • USB Host connector
  • SDCard Slot
  • Hardware Files (...)
DEVELOPMENT KITS Download
document-generic User guide
219
Description

TMDSDOCK28379D is a HSEC180 controlCARD based evaluation and development tool for the C2000™ Delfino™ F2837x and Piccolo F2807x series of microcontroller products. The Docking Station provides power to the controlCARD and has a bread-board area for prototyping. Access to the key device (...)

Features

Hardware Features

  • TMDSCNCD28379D: TMS320F28379D HSEC180 based controlCARD
    • Isolated XDS100v2 USB-to-JTAG Debug Probe enables real-time in-system programming and debugging
  • Bread-board like baseboard with HSEC180 controlCARD female connector
    • Header pin access to key MCU signals
    • Breadboard area for (...)

Software development

SUPPORT SOFTWARE Download
SLVC538.ZIP (644 KB)

Design tools & simulation

SIMULATION MODELS Download
SLIM129.ZIP (84 KB) - PSpice Model
SIMULATION MODELS Download
SLIM130.ZIP (310 KB) - PSpice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
GERBER FILES Download
SLVC132.ZIP (101 KB)
GERBER FILES Download
SLVC780.ZIP (138 KB)

Reference designs

REFERENCE DESIGNS Download
Industrial Servo Drive and AC Inverter Drive Reference Design
TIDM-SERVODRIVE The DesignDRIVE Development Kit is a reference design for a complete industrial drive directly connecting to a three phase ACI or PMSM motor. Many drive topologies can be created from the combined control, power and communications technologies included on this single platform.  Includes (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High-Bandwidth Arbitrary Waveform Generator Reference Design: DC or AC coupled, High-Voltage output
TIDA-00684 — In TIDA-00684 reference design a quad-channel TSW3080 evaluation module (EVM) is developed to shows how to use an active amplifier interface with the DAC38J84 to demonstrate an arbitrary-waveform-generator frontend. The DAC38J84 provides four DAC channels with 16 bits of resolution with a maximum (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Monitoring Voltage Rails on Delfino with TPS3702 Reference Design
TIDA-00392 The C2000 Delfino microcontrollers' demand for a tight tolerance on both of its supply rails; this supervisory topology is designed to monitor the two voltage rails and assert a reset when either rail is not within its threshold. The two supervisors will monitor for both undervoltage and overvoltage (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Quad-Channel 250-Msps Digitizer with Variable Gain Amplifier Reference Design
TIDA-00094 This reference design shows a quad channel, 14-bit, 250-Msps digitizer with wide input range using the LMH6881 programmable differential amplifier and ADS4449 quad-channel, 14-bit, 250-Msps ADC. This combination allows an input voltage range of approximately 1 Vpp to 100 uVpp (4 dBm to -75 dBm (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Optimizing THS4509 to Drive High Speed ADCs Reference Design
TIDA-00093 This reference design shows the ability of the high-speed amplifier, THS4509 to perform single-ended to differential conversion to drive high-speed analog-to-digital converters (ADCs) while maintaining excellent noise and distortion performance. Performance versus input frequency is shown for both (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Adjacent Channel Power Ratio (ACPR) and Error Vector Magnitude (%EVM) Measurements
TIDA-00076 This reference design discusses the use of the TSW3085EVM with the TSW3100 pattern generator to test adjacent channel power ratio (ACPR) and error vector magnitude (EVM) measurements of LTE baseband signals. By using the TSW3100 LTE GUI, patterns are loaded into the TSW3085EVM which is comprised of (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Optimizing LMH6554 to Drive High Speed ADCs
TIDA-00092 This reference design shows the ability of the high-speed amplifier, LMH6554, to perform single-ended to differential conversion to drive high-speed analog-to-digital converters (ADCs) while maintaining excellent noise and distortion performance. Performance versus input frequency is shown for both (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Wideband Digital to RF Transmit Solution
TIDA-00072 The TSW308x is an example design of a wideband digital to RF transmit solution capable of generating 600 MHz of contiguous RF spectrum.  The system provides a reference on how to use the DAC34x8x, TRF3705 IQ modulator and LMK0480x to achieve this.  This reference EVM coupled with a pattern (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VSON (DRC) 10 View options

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