TPS65253

Name: TPS65253
Brand: TI
SKU: TPS65253
Price: 1.549 USD

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Zweifach-Abwärtswandler, 4,5 bis 16 V Eingangsspannung, 2,5/3,5 A Ausgang

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Datenblatt

document-pdfAcrobat 4.5 V - 16 V IN, HIGH CURRENT, SYNCH. STEP DOWN DUAL BUCK CONVERTER w/ Int FETS datasheet (Englisch)

TPS65253

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Topology

Buck

Type

Converter

Iout (max) (A)

3.5

Vin (min) (V)

4.5

Vin (max) (V)

16

Switching frequency (min) (kHz)

300

Switching frequency (max) (kHz)

1500

Features

Adjustable current limit, Enable, Light Load Efficiency, Power good, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable

Control mode

current mode

Vout (min) (V)

0.8

Vout (max) (V)

15

Iq (typ) (µA)

600

Duty cycle (max) (%)

100

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Topology

Buck

Type

Converter

Iout (max) (A)

3.5

Vin (min) (V)

4.5

Vin (max) (V)

16

Switching frequency (min) (kHz)

300

Switching frequency (max) (kHz)

1500

Features

Adjustable current limit, Enable, Light Load Efficiency, Power good, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable

Control mode

current mode

Vout (min) (V)

0.8

Vout (max) (V)

15

Iq (typ) (µA)

600

Duty cycle (max) (%)

100

VQFN (RHD)

28

25 mm² 5 x 5

Wide Input Supply Voltage Range:
4.5 V – 16 V
Output Range: 0.8 V to ~V_IN–1 V
Fully Integrated Dual Buck, 3.5-A/2.5-A Continuous Current
(4-A/3-A Maximum Current)
High Efficiency
300-kHz – 1.2-MHz Switching Frequency Set by External Resistor
External Eenable/Sequencing Pins
Adjustable Cycle-by-Cycle Current Limit Set by External Resistor
Soft-Start Pins
Current-Mode Control With Simple Compensation Circuit
Power Good and Reset Generator
Low Power Mode Set By External Signal
Supervisory Circuit
QFN Package, 28-Pin 5 mm × 5 mm RHD
APPLICATIONS
- DTV
- DSL Modems
- Cable Modems
- Set Top Boxes
- Car DVD Players
- Home Gateway and Access Point Networks
- Wireless Routers

Wide Input Supply Voltage Range:
4.5 V – 16 V
Output Range: 0.8 V to ~V_IN–1 V
Fully Integrated Dual Buck, 3.5-A/2.5-A Continuous Current
(4-A/3-A Maximum Current)
High Efficiency
300-kHz – 1.2-MHz Switching Frequency Set by External Resistor
External Eenable/Sequencing Pins
Adjustable Cycle-by-Cycle Current Limit Set by External Resistor
Soft-Start Pins
Current-Mode Control With Simple Compensation Circuit
Power Good and Reset Generator
Low Power Mode Set By External Signal
Supervisory Circuit
QFN Package, 28-Pin 5 mm × 5 mm RHD
APPLICATIONS
- DTV
- DSL Modems
- Cable Modems
- Set Top Boxes
- Car DVD Players
- Home Gateway and Access Point Networks
- Wireless Routers

The TPS65253 features two synchronous wide input range high efficiency buck converters. The converters are designed to simplify product application while giving designers the options to optimize their usage according to the target application.

The converters can operate in 5-, 9- and 12-V systems and have integrated power transistors. The output voltage can be set externally using a resistor divider to any value between 0.8 V and the input supply minus 1 V. Each converter features an enable pin that allows a delayed start-up for sequencing purposes, soft-start pin that allows adjustable soft-start time by choosing the soft-start capacitor, and a current limit (RLIMx) pin that enables designer to adjust current limit by selecting an external resistor and optimize the choice of inductor. The CMP pin allows optimizing transient versus dc accuracy response with a simple RC compensation.

The switching frequency of the converters is set by an external resistor connected to R_OSC pin. The switching regulators are designed to operate from 300 kHz to 1.2 MHz. The converters operate with 180° phase between then to minimize the input filter requirements.

TPS65253 also features a low power mode enabled by an external signal, which allows for a reduction on the input power supplied to the system when the host processor is in stand-by (low activity) mode.

TPS65253 features a supervisor circuit that monitors both converters and provides a PGOOD signal (End of Reset) with a 32-ms timer.

TPS65253 is packaged in a small, thermally efficient 28-pin QFN package.

The TPS65253 features two synchronous wide input range high efficiency buck converters. The converters are designed to simplify product application while giving designers the options to optimize their usage according to the target application.

The converters can operate in 5-, 9- and 12-V systems and have integrated power transistors. The output voltage can be set externally using a resistor divider to any value between 0.8 V and the input supply minus 1 V. Each converter features an enable pin that allows a delayed start-up for sequencing purposes, soft-start pin that allows adjustable soft-start time by choosing the soft-start capacitor, and a current limit (RLIMx) pin that enables designer to adjust current limit by selecting an external resistor and optimize the choice of inductor. The CMP pin allows optimizing transient versus dc accuracy response with a simple RC compensation.

The switching frequency of the converters is set by an external resistor connected to R_OSC pin. The switching regulators are designed to operate from 300 kHz to 1.2 MHz. The converters operate with 180° phase between then to minimize the input filter requirements.

TPS65253 also features a low power mode enabled by an external signal, which allows for a reduction on the input power supplied to the system when the host processor is in stand-by (low activity) mode.

TPS65253 features a supervisor circuit that monitors both converters and provides a PGOOD signal (End of Reset) with a 32-ms timer.

TPS65253 is packaged in a small, thermally efficient 28-pin QFN package.

filter

Andere AC/DC- und DC/DC-Wandler (integrierter FET) suchen

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Technische Dokumentation

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Alle anzeigen 5

	Typ	Titel		Datum
*	Data sheet	4.5 V - 16 V IN, HIGH CURRENT, SYNCH. STEP DOWN DUAL BUCK CONVERTER w/ Int FETS datasheet		15 Jun 2011
	EVM User's guide	TPS65253 Buck Converter Evaluation Module User's Guide (Rev. B)	PDF \| HTML	26 Mai 2021
	Selection guide	Power Management Guide 2018 (Rev. R)		25 Jun 2018
	Application note	TPS65250/1/2/3 LAYOUT GUIDE		15 Jan 2013
	Application note	TPS65250/1/2/3 Output Filter Selection Guidelines		15 Jan 2013

Design und Entwicklung

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Evaluierungsplatine

TPS65253EVM — Evaluierungsmodul für TPS65253, 4,5 V bis 16 V-EINGÄNGE mit 2 Abwärtswandlern und integrierten FETS

The TPS65253EVM is a high current, synchronous step down two buck switcher evaluation module. This evaluation module is designed to provide access to the features of the TPS65253. Some modifications can be made to this module to test performance at different input and output voltages, current and (...)

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