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TPS62420-Q1

ACTIVE

Automotive 2.5V to 6V, 2.25MHz Fixed Frequency Dual (1A/600mA) Buck Converter with 1-Wire Interface

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Data sheet

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TPS62442-Q1 ACTIVE Automotive 2.75-V to 6-V, dual 2-A or 3-A and 1-A output, adjustable frequency, step-down converter Different output current (800 mA / 800 mA).

TPS62420-Q1

ACTIVE
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Product details

Rating Automotive Topology Buck Iout (max) (A) 0.6 Vin (max) (V) 6 Vin (min) (V) 2.5 Vout (max) (V) 6 Vout (min) (V) 0.6 Features Adaptive/Dynamic Voltage Scaling, Enable, Forced PWM, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000032 Duty cycle (max) (%) 100
Rating Automotive Topology Buck Iout (max) (A) 0.6 Vin (max) (V) 6 Vin (min) (V) 2.5 Vout (max) (V) 6 Vout (min) (V) 0.6 Features Adaptive/Dynamic Voltage Scaling, Enable, Forced PWM, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000032 Duty cycle (max) (%) 100
VSON (DRC) 10 9 mm² (3 mm × 3 mm)
  • Qualified for Automotive Applications
  • 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
  • EasyScale Optional 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%
  • 100% Duty Cycle for Lowest Dropout
  • Available in a 10-Pin QFN (3×3mm)
  • Qualified for Automotive Applications
  • 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
  • EasyScale Optional 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%
  • 100% Duty Cycle for Lowest Dropout
  • Available in a 10-Pin QFN (3×3mm)

The TPS62420 device is a synchronous dual step-down dc-dc converter optimized for battery-powered portable applications. 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 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 TPS62420 operates at 2.25-MHz fixed switching frequency and enters 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 TPS62420 is available in a 10-pin leadless package (3mm×3mm QFN).

The TPS62420 device is a synchronous dual step-down dc-dc converter optimized for battery-powered portable applications. 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 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 TPS62420 operates at 2.25-MHz fixed switching frequency and enters 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 TPS62420 is available in a 10-pin leadless package (3mm×3mm QFN).
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS62420-Q1 2.25-MHz 600-mA/1000-mA Dual Step-Down Converter datasheet Dec 31, 2009
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML Dec 6, 2023
Analog design Journal Methods of output-voltage adjustment for DC/DC converters Jun 14, 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec 11, 2018
Analog design Journal Understanding 100% mode in low-power DC/DC converters Jun 22, 2018
Analog design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold Oct 24, 2017
Analog design Journal Testing tips for applying external power to supply outputs without an input voltage Oct 24, 2016
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) PDF | HTML Aug 17, 2015
Analog design Journal Five steps to a great PCB layout for a step-down converter Jan 29, 2015
Analog design Journal Design considerations for a resistive feedback divider in a DC/DC converter Apr 26, 2012
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) Jan 13, 2012
Analog design Journal 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.

Simulation model

TPS62420 PSpice Average Model

SLIM129.ZIP (84 KB) - PSpice model
Supported products & hardware
Simulation model

TPS62420 PSpice Transient Model

SLIM130.ZIP (310 KB) - PSpice model
Supported products & hardware
Calculation tool

SLVC780 — Design Tool for Output Voltage Adjustment Using a DAC

Calculator tool to adjust the power supply's output voltage with an analog input voltage
Supported products & hardware
Reference design

TIDA-050015 — Automotive ADAS camera power supply reference design optimized for solution size and low noise

This wide-input power-supply reference design is specifically designed for space-constrained automotive ADAS camera applications. This size-optimized design uses front-end protection paired with a wide input voltage DC/DC converter to enable off-battery operation. The front-end filter and (...)
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
VSON (DRC) 10 Ultra Librarian
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