TPS62873

Name: TPS62873
Brand: TI
SKU: TPS62873
Price: 1.58 USD

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6-V, 15-A, stackable, synchronous buck converter

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Data sheet

document-pdfAcrobat TPS6287x 2.7V to 6V Input, 6A, 9A, 12A, 15A, Stackable, Synchronous Step-Down Converters With Fast Transient Response datasheet (Rev. B) PDF | HTML

TPS62873

ACTIVE

Data sheet

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Product details

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Topology

Buck

Type

Converter

Iout (max) (A)

15

Vin (min) (V)

2.7

Vin (max) (V)

6

Switching frequency (min) (kHz)

1500

Switching frequency (max) (kHz)

3000

Features

Adaptive/Dynamic Voltage Scaling, Differential Remote Sense, Enable, Fixed Output, Forced PWM, Frequency synchronization, I2C, I2C bus interface, I2C control, I2C interface, I2C/PMBus, Light Load Efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO Fixed, Wettable flanks package

Control mode

Constant on-time (COT), DCS-Control

Vout (min) (V)

0.4

Vout (max) (V)

3.35

Duty cycle (max) (%)

70

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Topology

Buck

Type

Converter

Iout (max) (A)

15

Vin (min) (V)

2.7

Vin (max) (V)

6

Switching frequency (min) (kHz)

1500

Switching frequency (max) (kHz)

3000

Features

Adaptive/Dynamic Voltage Scaling, Differential Remote Sense, Enable, Fixed Output, Forced PWM, Frequency synchronization, I2C, I2C bus interface, I2C control, I2C interface, I2C/PMBus, Light Load Efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO Fixed, Wettable flanks package

Control mode

Constant on-time (COT), DCS-Control

Vout (min) (V)

0.4

Vout (max) (V)

3.35

Duty cycle (max) (%)

70

VQFN-FCRLF (RXS)

16

9.0525 mm² 2.55 x 3.55

Functional Safety-Capable
- Documentation available to aid functional safety system design
2.7V to 6V input voltage range
6A, 9A, 12A, and 15A family of pin-to-pin compatible device
Four output voltage ranges:
- 0.4V to 0.71875V in 1.25mV steps
- 0.4V to 1.0375V in 2.5mV steps
- 0.4V to 1.675V in 5mV steps
- 0.8V to 3.35V in 10mV steps
Output voltage accuracy ±1%
7mΩ and 4.5mΩ internal power MOSFETs
Adjustable external compensation
Resistor-selectable start-up output voltage
Resistor-selectable switching frequency
Power-save or forced-PWM operation
I2C-compatible interface up to 1MHz
Differential remote sensing
Optional stacked operation for increased output current capability
Thermal warning and thermal shutdown
Precise enable input
Active output discharge
Optional spread-spectrum clocking
Power-good output with a window comparator
Available in 2.55mm × 3.55mm × 1mm VQFN package with wettable flanks
–40°C to 125°C junction temperature, TJ

Functional Safety-Capable
- Documentation available to aid functional safety system design
2.7V to 6V input voltage range
6A, 9A, 12A, and 15A family of pin-to-pin compatible device
Four output voltage ranges:
- 0.4V to 0.71875V in 1.25mV steps
- 0.4V to 1.0375V in 2.5mV steps
- 0.4V to 1.675V in 5mV steps
- 0.8V to 3.35V in 10mV steps
Output voltage accuracy ±1%
7mΩ and 4.5mΩ internal power MOSFETs
Adjustable external compensation
Resistor-selectable start-up output voltage
Resistor-selectable switching frequency
Power-save or forced-PWM operation
I2C-compatible interface up to 1MHz
Differential remote sensing
Optional stacked operation for increased output current capability
Thermal warning and thermal shutdown
Precise enable input
Active output discharge
Optional spread-spectrum clocking
Power-good output with a window comparator
Available in 2.55mm × 3.55mm × 1mm VQFN package with wettable flanks
–40°C to 125°C junction temperature, TJ

The TPS6287x is a family of pin-to-pin 6A, 9A, 12A, and 15A synchronous step-down DC/DC converters with differential remote sensing. For each current rating, there are full-featured device variants with I2C interface and limited-featured device variants without I2C interface. All devices offer high efficiency and ease of use. Low-resistance power switches allow up to 15A continuous output current at high ambient temperatures.

The devices can operate in stacked mode to deliver higher output currents or to spread the power dissipation across multiple devices.

The TPS6287x family implements an enhanced DCS-control scheme that supports fast transients with fixed-frequency operation. Devices can operate in power save mode for maximum efficiency, or forced-PWM mode for the best transient performance and lowest output voltage ripple.

An optional remote sensing feature maximizes voltage regulation at the point-of-load, and the device achieves better than ±1% DC voltage accuracy under all operating conditions.

The switching frequency is resistor-selectable through the FSEL pin. The switching frequency can be set to 1.5MHz, 2.25MHz, 2.5MHz, or 3.0MHz, or synchronized to an external clock in the same frequency range.

The I2C-compatible interface offers several control, monitoring, and warning features, such as voltage monitoring and temperature-related warnings. The output voltage can be quickly adjusted to adapt the power consumption of the load to the performance needs of the application through the I2C-compatible interface. The default start-up voltage is resistor-selectable through the VSEL pin.

The TPS6287x is a family of pin-to-pin 6A, 9A, 12A, and 15A synchronous step-down DC/DC converters with differential remote sensing. For each current rating, there are full-featured device variants with I2C interface and limited-featured device variants without I2C interface. All devices offer high efficiency and ease of use. Low-resistance power switches allow up to 15A continuous output current at high ambient temperatures.

The devices can operate in stacked mode to deliver higher output currents or to spread the power dissipation across multiple devices.

The TPS6287x family implements an enhanced DCS-control scheme that supports fast transients with fixed-frequency operation. Devices can operate in power save mode for maximum efficiency, or forced-PWM mode for the best transient performance and lowest output voltage ripple.

An optional remote sensing feature maximizes voltage regulation at the point-of-load, and the device achieves better than ±1% DC voltage accuracy under all operating conditions.

The switching frequency is resistor-selectable through the FSEL pin. The switching frequency can be set to 1.5MHz, 2.25MHz, 2.5MHz, or 3.0MHz, or synchronized to an external clock in the same frequency range.

The I2C-compatible interface offers several control, monitoring, and warning features, such as voltage monitoring and temperature-related warnings. The output voltage can be quickly adjusted to adapt the power consumption of the load to the performance needs of the application through the I2C-compatible interface. The default start-up voltage is resistor-selectable through the VSEL pin.

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Technical documentation

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	Type	Title		Date
*	Data sheet	TPS6287x 2.7V to 6V Input, 6A, 9A, 12A, 15A, Stackable, Synchronous Step-Down Converters With Fast Transient Response datasheet (Rev. B)	PDF \| HTML	31 May 2024
	Analog Design Journal	固定頻率 DCS-Control：具有時脈同步的快速瞬態回應	PDF \| HTML	13 Feb 2024
	Analog Design Journal	고정 주파수 DCS 제어: 클록 동기화를 통한 빠른 과도 응답	PDF \| HTML	13 Feb 2024
	Analog Design Journal	Fixed-frequency DCS-Control: Fast transient response with clock synchronization	PDF \| HTML	12 Feb 2024
	Functional safety information	TPS6287x Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA	PDF \| HTML	23 Jan 2024
	Application note	QFN and SON PCB Attachment (Rev. C)	PDF \| HTML	06 Dec 2023
	Application note	Benefiting from Step-Down Converters with an I2C Communication Interface (Rev. B)	PDF \| HTML	29 Nov 2023
	Application note	AM68x Processor Power Solutions Using LP87334E PMIC for Industrial Applications	PDF \| HTML	14 Mar 2023
	Application note	Using the Filters with the DC/DC Step-Down Converter	PDF \| HTML	02 Feb 2023
	Application note	Operating TPS6287X-Q1 Devices in a Stacked Configuration	PDF \| HTML	30 Jan 2023
	Application note	Adjusting the Output Voltage of a Fixed Output Voltage DC-DC Converter	PDF \| HTML	22 Dec 2022
	EVM User's guide	TPS62873 Dual Buck Converter Evaluation Module (Rev. A)	PDF \| HTML	04 Nov 2022
	Application note	Understanding SOA Curves to Operate at High Output Currents and Temperature	PDF \| HTML	05 May 2022
	User guide	TPS62873 Buck Converter Evaluation Module User's Guide	PDF \| HTML	22 Feb 2022
	Certificate	TPS62873EVM-143 EU RoHS Declaration of Conformity (DoC)		18 Feb 2022
	Application note	How to Measure Impedance of a Power Distribution Network of a DC-DC Converter	PDF \| HTML	20 Jan 2022
	Application note	Loop Gain Reconstruction of a Step-Down Converter from Output Impedance	PDF \| HTML	20 Jan 2022
	White paper	Enabling Higher Data Rates for Optical Modules With Small and Efficient Power		22 Mar 2021
	White paper	Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies		14 Oct 2019
	Analog Design Journal	Methods of output-voltage adjustment for DC/DC converters		14 Jun 2019
	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	Understanding frequency variation in the DCS-Control(TM) topology		30 Oct 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	Understanding the Absolute Maximum Ratings of the SW Node (Rev. A)		13 Jan 2012
	Application note	Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs		19 Sep 2011

Design & development

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Evaluation board

TPS62873EVM-143 — TPS62873-Q1 evaluation module 2.7-V to 6-V input, step-down converter

The TPS62873EVM-143 evaluation module (EVM) is designed to evaluate and test the operation and functionality of the TPS62873-Q1 buck converter. It also can be used to evaluate TPS62870-Q1, TPS62871-Q1 and TPS62872-Q1 devices. The EVM converts a 2.7-V to 6.0-V input voltage to a regulated 0.75-V (...)

User guide: PDF | HTML

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Evaluation board

TPS62873EVM-144 — TPS62873-Q1 30-A step-down converter evaluation module

The TPS62873EVM-144 evaluation module (EVM) is a high-frequency, synchronous step-down converter optimized for a small solution size and high efficiency. The EVM is designed to help the user easily evaluate and test the operation and functionality of a stacked configuration of two TPS62873 buck (...)

User guide: PDF | HTML