TPS65581PWP

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Texas Instruments

4.5V TO 20V INPUT, 3.3V 3A SYNCHRONOUS STEP-DOWN SWIFT™ CONVERTER W/ LOW-SIDE GATE DRIVER

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TPS65581PWP

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Texas Instruments

4.5V TO 20V INPUT, 3.3V 3A SYNCHRONOUS STEP-DOWN SWIFT™ CONVERTER W/ LOW-SIDE GATE DRIVER

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Description Specifications Series Pricing CAD Documents

Description

General part information

TPS65581 Series

The TPS65581 is a triple, advanced D-CAP2™ mode synchronous buck converter. The TPS65581 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, and low standby current solution. The main control loops of the TPS65581 uses the advanced D-CAP2™ mode control which provides a fast transient response with no external compensation components. Advanced D-CAP2™ mode control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ allows the TPS65581 to maintain high efficiency during light load conditions. The device is able to adapt to both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR, ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5V to 18V.

The TPS65581 is available in 4.4mm × 6.5mm 20 pin TSSOP (PWP) package, and is specified from –40°C to 85°C ambient temperature range.

Technical Specifications

Parameters and characteristics for this part

Specification	TPS65581PWP

Current - Output (Max)	2.5 A
Current - Output (Min)	1.5 A
Frequency - Switching	700 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	3
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package Length	0.173 in
Package Name	20-HTSSOP, 20-PowerTSSOP
Package Width	4.4 mm
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	18 V
Voltage - Input (Min)	4.5 V
Voltage - Output (Max)	7 V
Voltage - Output (Min/Fixed)	0.764 V

TPS65581 Series

4.5V to 20V Input, 3.3V 3A Synchronous Step-Down SWIFT™ Converter w/ Low-Side Gate Driver

Part	Number of Outputs	Function	Mounting Type	Operating Temperature (Max)	Operating Temperature (Min)	Topology	Output Type	Package Name	Voltage - Output (Max)	Voltage - Input (Max)	Voltage - Input (Min)	Synchronous Rectifier	Current - Output (Min)	Current - Output (Max)	Output Configuration	Package Length	Package Width	Frequency - Switching	Voltage - Output (Min/Fixed)	Non-Isolated Output Count	Total Output Count	Supplied Contents	Board Type	Voltage - Output	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Regulator Topology	Utilized IC / Part	Current - Output (Value 1)	Current - Output (Value 3)	Current - Output (Value 2)	Main Purpose	Contents
Texas Instruments TPS65581PWPR	3	Step-Down	Surface Mount	85 °C	-40 °C	Buck	Adjustable	20-HTSSOP 20-PowerTSSOP	7 V	18 V	4.5 V	Yes	1.5 A	2.5 A	Positive	0.173 in	4.4 mm	700 kHz	0.764 V
Texas Instruments TPS65581PWP	3	Step-Down	Surface Mount	85 °C	-40 °C	Buck	Adjustable	20-HTSSOP 20-PowerTSSOP	7 V	18 V	4.5 V	Yes	1.5 A	2.5 A	Positive	0.173 in	4.4 mm	700 kHz	0.764 V
Texas Instruments TPS65581EVM-575							Non-Isolated											700 kHz		3	3	Board(s)	Fully Populated	1.2 V 1.5 V 3.3 V	4.5 V	18 V	Buck	TPS65581	2 A	1.5 A	1.5 A	DC/DC Step Down	Board

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

TPS65581 Buck Converter Evaluation Module User's Guide (Rev. A)

4.5V to 18V Input 1.5A, 2A, 1.5A Triple Synchronous Step-Down Converter datasheet (Rev. B)