TPS62120

Name: TPS62120
Brand: TI
SKU: TPS62120
Price: 0.511 USD

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Abwärtswandler, 15 V, 75 mA, 96 % Wirkungsgrad und DCS-Steuerung

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Datenblatt

document-pdfAcrobat TPS6212x 15-V, 75-mA Highly Efficient Buck Converter datasheet (Rev. A) (Englisch) PDF | HTML

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TPS62120

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Datenblatt

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Produktdetails

Rating

Catalog

Topology

Buck

Iout (max) (A)

0.075

Vin (max) (V)

15

Vin (min) (V)

2

Vout (max) (V)

5.5

Vout (min) (V)

1.2

Features

Enable, Light Load Efficiency, Output discharge, Power good, Synchronous Rectification

Control mode

Constant on-time (COT), DCS-Control

Operating temperature range (°C)

-40 to 85

Iq (typ) (A)

0.000011

Duty cycle (max) (%)

100

Rating

Catalog

Topology

Buck

Iout (max) (A)

0.075

Vin (max) (V)

15

Vin (min) (V)

2

Vout (max) (V)

5.5

Vout (min) (V)

1.2

Features

Enable, Light Load Efficiency, Output discharge, Power good, Synchronous Rectification

Control mode

Constant on-time (COT), DCS-Control

Operating temperature range (°C)

-40 to 85

Iq (typ) (A)

0.000011

Duty cycle (max) (%)

100

SOT-23 (DCN)

8

4.64 mm² 2.9 x 1.6

Wide Input Voltage Range: 2 V to 15 V
Up to 96% Efficiency
Power Save Mode With 11-µA Quiescent Current
Output Current 75 mA
Output Voltage Range: 1.2 V to 5.5 V
Up to 800-kHz Switch Frequency
Synchronous Converter, No External Rectifier
Low Output Ripple Voltage
100% Duty Cycle for Lowest Dropout
Small SOT 8-Pin (TPS62120) and 2-mm × 2-mm
DFN 6-Pin (TPS62122) Package
Internal Soft Start
Power Good Open Drain Output (TPS62120)
Open-Drain Output for Output Discharge
(TPS62120)
2.5-V Rising and 1.85-V Falling UVLO Thresholds

Wide Input Voltage Range: 2 V to 15 V
Up to 96% Efficiency
Power Save Mode With 11-µA Quiescent Current
Output Current 75 mA
Output Voltage Range: 1.2 V to 5.5 V
Up to 800-kHz Switch Frequency
Synchronous Converter, No External Rectifier
Low Output Ripple Voltage
100% Duty Cycle for Lowest Dropout
Small SOT 8-Pin (TPS62120) and 2-mm × 2-mm
DFN 6-Pin (TPS62122) Package
Internal Soft Start
Power Good Open Drain Output (TPS62120)
Open-Drain Output for Output Discharge
(TPS62120)
2.5-V Rising and 1.85-V Falling UVLO Thresholds

The TPS6212x device is a highly efficient synchronous step-down DC-DC converter optimized for low-power applications. The device supports up to 75-mA output current and allows the use of tiny external inductors and capacitors.

The wide operating input voltage range of 2 V to 15 V supports energy harvesting, battery powered and as well 9-V or 12-V line powered applications.

With its advanced hysteretic control scheme, the converter provides power save mode operation. At light loads the converter operates in pulse frequency modulation (PFM) mode and transitions automatically in pulse width modulation (PWM) mode at higher load currents. The power save mode maintains high efficiency over the entire load current range. The hysteretic control scheme is optimized for low output ripple voltage in PFM mode in order to reduce output noise to a minimum. The device consumes only 10-µA quiescent current from VIN in PFM mode operation.

In shutdown mode, the device is turned off.

An open-drain power good output is available in the TPS62120 and indicates once the output voltage is in regulation.

The TPS62120 has an additional SGND pin which is connected to GND during shutdown mode. This output can be used to discharge the output capacitor.

The TPS6212x operates over an free air temperature range of –40°C to 85°C. The TPS62120 is available in a small 8-pin SOT-23 package and the TPS62122 in a 2 mm × 2 mm 6-pin DFN package.

The TPS6212x device is a highly efficient synchronous step-down DC-DC converter optimized for low-power applications. The device supports up to 75-mA output current and allows the use of tiny external inductors and capacitors.

The wide operating input voltage range of 2 V to 15 V supports energy harvesting, battery powered and as well 9-V or 12-V line powered applications.

With its advanced hysteretic control scheme, the converter provides power save mode operation. At light loads the converter operates in pulse frequency modulation (PFM) mode and transitions automatically in pulse width modulation (PWM) mode at higher load currents. The power save mode maintains high efficiency over the entire load current range. The hysteretic control scheme is optimized for low output ripple voltage in PFM mode in order to reduce output noise to a minimum. The device consumes only 10-µA quiescent current from VIN in PFM mode operation.

In shutdown mode, the device is turned off.

An open-drain power good output is available in the TPS62120 and indicates once the output voltage is in regulation.

The TPS62120 has an additional SGND pin which is connected to GND during shutdown mode. This output can be used to discharge the output capacitor.

The TPS6212x operates over an free air temperature range of –40°C to 85°C. The TPS62120 is available in a small 8-pin SOT-23 package and the TPS62122 in a 2 mm × 2 mm 6-pin DFN package.

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Top-Dokumentation	Typ	Titel	Format-Optionen	Datum
*	Data sheet	TPS6212x 15-V, 75-mA Highly Efficient Buck Converter datasheet (Rev. A)	PDF \| HTML	31 Jul 2015
	Application note	Using the TPS62120 in an Inverting Buck-Boost Topology (Rev. C)	PDF \| HTML	29 Nov 2022
	Application note	Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B)	PDF \| HTML	23 Mai 2022
	Selection guide	Buck Converter Quick Reference Guide (Rev. B)		08 Apr 2021
	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 Dez 2018
	Selection guide	Power Management Guide 2018 (Rev. R)		25 Jun 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 Okt 2017
	Application note	Extending the Soft Start Time Without a Soft Start Pin (Rev. B)		15 Jun 2017
	Analog Design Journal	Testing tips for applying external power to supply outputs without an input voltage		24 Okt 2016
	Analog Design Journal	Understanding frequency variation in the DCS-Control(TM) topology		30 Okt 2015
	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	High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions		25 Jul 2013
	Application note	How to Measure the Control Loop of DCS-Control Devices (Rev. A)		09 Aug 2012
	Analog Design Journal	Design considerations for a resistive feedback divider in a DC/DC converter		26 Apr 2012
	White paper	Power Management Solutions for Ultra-Low-Power 16-Bit MSP430 MCUs (Rev. D)		28 Mär 2012
	Application note	Understanding the Absolute Maximum Ratings of the SW Node (Rev. A)		13 Jan 2012
	Application note	Powering the MSP430 from a High Voltage Input using the TPS62122 (Rev. C)		12 Jan 2012
	Application note	Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs		19 Sep 2011
	Analog Design Journal	IQ: What it is, what it isn’t, and how to use it		17 Jun 2011

Design und Entwicklung

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Evaluierungsplatine

TPS62120EVM-640 — TPS62120-Evaluierungsmodul

The TPS62120EVM-640 is a fully assembled and tested platform for evaluating the operation andperformance of the TPS62120 converter. The TPS62120EVM-640 has an input voltage range from 2.0 V up to 15 V, and the output voltage is adjustable with an external feedback divider network in the range of (...)

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