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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
Data sheet Order now

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 Switching frequency (min) (kHz) 2250 Switching frequency (max) (kHz) 2250 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 32 Duty cycle (max) (%) 100 Type Converter
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 Switching frequency (min) (kHz) 2250 Switching frequency (max) (kHz) 2250 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 32 Duty cycle (max) (%) 100 Type Converter
VSON (DRC) 10 9 mm² 3 x 3
  • 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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Similar products you might be interested in

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
TPS62410-Q1 ACTIVE Automotive 2.5V to 6V, 2.25MHz Fixed Frequency Dual (800mA/800mA) Buck Converter Different output current (800 mA / 800 mA)

Technical documentation

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Type Title Date
* Data sheet TPS62420-Q1 2.25-MHz 600-mA/1000-mA Dual Step-Down Converter datasheet 31 Dec 2009
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 06 Dec 2023
Analog Design Journal Methods of output-voltage adjustment for DC/DC converters 14 Jun 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 22 Jun 2018
Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 24 Oct 2017
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 24 Oct 2016
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) 17 Aug 2015
Analog Design Journal Five steps to a great PCB layout for a step-down converter 29 Jan 2015
Analog Design Journal Design considerations for a resistive feedback divider in a DC/DC converter 26 Apr 2012
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 13 Jan 2012
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17 Jun 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
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Simulation model

TPS62420 PSpice Transient Model

SLIM130.ZIP (310 KB) - PSpice Model
Download
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

Supported products & hardware

Products
Precision DACs (≤10 MSPS)
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Power modules (integrated inductor)
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  • TPS82140 — 17V Input 2A Synchronous Step-Down Converter MicroSiP™ Module With Integrated Inductor
  • TPS82150 — 17V Input 1A Synchronous Step-Down Converter MicroSiP™ Module With Integrated Inductor
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  • TPSM82822 — 5.5-V input, 2-A step-down module with integrated inductor in 2 x 2.5 x 1.1-mm μSIP package
AC/DC & DC/DC converters (integrated FET)
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  • TLV62080 — 1.2A High Efficient Step Down Converter in 2x2mm SON Package
  • TLV62084 — 2A High Efficient Step Down Converter in 2x2mm SON Package
  • TLV62084A — 2A High Efficient Step Down Converter in 2x2mm SON Package
  • TLV62085 — 3-A High Efficiency Step-Down Converter in 2x2 QFN
  • TLV62090 — 3A High Efficiency Step Down Converter in 3x3mm QFN Package
  • TLV62095 — 4A Synchronous Step Down Converter with DCS Control
  • TLV62130 — 3-17V 3A Step-Down Converter in 3x3 QFN Package
  • TLV62130A — 3-17V 3A Step-Down Converter with DCS-Control in 3x3 QFN Package
  • TLV62150 — 4-17V 1A Step-Down Converter with DCS-Control™
  • TLV62150A — 4-17V, 1A STEP-DOWN CONVERTER with DCS-Control in 3x3 QFN Package
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  • TLV62569 — 2.5V-5.5V input, 2-A high efficiency step-down buck converter in SOT23 and SOT563 package
  • TLV62569A — 2A High Efficiency Step-down Buck Converter with forced PWM in SOT Package
  • TLV62585 — 2.5V-5.5V input, 3-A high efficiency step-down converter in 2x2 QFN or SOT563 package
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  • TPS62040 — Adjustable, 1.2-A, 95% efficient step-down converter, 18 uA, MSOP-10 and QFN
  • TPS62050 — Adjustable, 800-mA, 10V Vin, 95% Efficient Step-Down Converter in MSOP-10
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  • TPS62065 — 3MHz, 2A Step-Down Converter in 2x2 SON Package
  • TPS62065-Q1 — 3MHz, 2A Automotive Step-Down Converter in 2x2 SON Package
  • TPS62067 — 3MHz, 2A Step-Down Converter in 2x2 SON Package
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  • TPS62080 — 1.2A High Efficient Step Down Converter in 2x2mm SON Package, with Adjustable Vout
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  • TPS62085 — 3-A Step-Down Converter with DCS-Control and Hiccup Short Circuit Protection in 2x2 HotRod Package
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  • TPS62090 — 3A, 6V input, up to 97% efficiency, Synchronous Step Down Converter with DCS™ Control
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  • TPS62095 — 4A Synchronous Step Down Converter with DCS Control
  • TPS62097 — 2-A Step Down Converter with Selectable Switching Frequency in HotRod package
  • TPS62097-Q1 — 2A Automotive Step-Down Converter in 3x3 QFN With Wettable Flanks
  • TPS62100 — Multimode 300kHz Synchronous Buck Converter with Adjustable Output
  • TPS62110 — Adjustable, 1.5-A, 17-V Vin Step-Down Converter in QFN-16
  • TPS62110-EP — Enhanced Product 17 V, 1.5 A Synchronous Step-Down Converter
  • TPS62110-HT — High Temperature 17-V, 1.5-A, Synchronous Step-Down Converter
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  • TPS62122 — 15V, 75mA, 96% efficiency Step-Down Converter
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  • TPS62130 — 3-17V 3A Step-Down Converter with DCS-Control in 3x3 QFN Package
  • TPS62130A — 3-V to 17-V, 3-A step-down converter with DCS-control in 3x3 QFN package
  • TPS62130A-Q1 — TPS62130A-Q1 3 to 17-V 3-A Automotive Step-Down Converter in 3 × 3 QFN Package
  • TPS62135 — 3-17V 4.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN
  • TPS62136 — 3-17V 4.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN
  • TPS62140 — 3–17V 2A Step-Down Converter with DCS-Control in 3x3 QFN package
  • TPS62140A — 3–17V 2A Step-Down Converter with DCS-Control in 3x3 QFN package
  • TPS62147 — 3-17V 2.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN
  • TPS62148 — 3-17V 2.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN
  • TPS62150 — 3–17V 1A Step-Down Converter with DCS-Control in 3x3 QFN package
  • TPS62150A — 3-17V 1A 3MHz Step-Down Converter with DCS-Control in 3x3 QFN Package
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  • TPS62160 — 3V-17V 1A Step-Down Converters with DCS-Control™
  • TPS62160-Q1 — 3V-17V 1A Automotive Step-Down Converters in 2x2SON
  • TPS62170 — 3–17V 0.5A Step-Down Converter with DCS-Control in 2x2 QFN package
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  • TPS62260 — 2.25MHz 600mA Step-Down Converter in 2x2mm SON/TSOT23 Package
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  • TPS62290 — 2.25MHz 1A Step-Down Converter in 2x2mm SON Package
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  • TPS62400-Q1 — Automotive Catalog Dual, Adjustable, 400mA & 600mA, 2.25MHz Step-Down Converter w/ 1-Wire Interface
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  • TPS62561 — 2.25MHz 600mA Step-Down Converter in TSOT23 Package
  • TPS62590 — 2.25MHz, 1A Step-Down Converter in 2 x 2 SON Package
  • TPS62590-Q1 — Automotive 2.5V to 6V, 2.25MHz Fixed Frequency 1A Buck Converter in 2x2mm SON Package
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  • TPS62751 — 2.25MHz, Step-Down Converter w/ Programmble Input Current Limits for USB powered Applications
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  • TPS62810M — 2.75-V to 6-V, 4-A step-down converter in a 2-mm x 3-mm QFN package with -55C extended temperature
  • TPS62821 — 2.4-V to 5.5-V input, 1-A step-down converter with 1% accuracy in 1.5-mm x 2-mm VSON-HR package
  • TPS62822 — 2.4-V to 5.5-V input, 2-A step-down converter with 1% accuracy in 1.5-mm x 2-mm VSON-HR package
  • TPS62823 — 2.4-V to 5.5-V input, 3-A step-down converter with 1% accuracy in 1.5-mm x 2-mm VSON-HR package
  • TPS62825 — 2.4-V to 5.5-V input, 2-A step-down converter with 1% accuracy in 1.5-mm x 1.5-mm QFN
  • TPS62826 — 2.4-V-5.5-V input, 3-A step-down converter with 1% accuracy in 1.5-mm x 1.5-mm VSON-HR package
  • TPS62827 — 2.5-V to 5.5-V input, 4-A step-down converter with 1% accuracy in 1.5-mm x 1.5-mm QFN
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Reference designs

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 (...)
Design guide: PDF
Schematic: PDF
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VSON (DRC) 10 Ultra Librarian
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