Integrated Circuits (ICs)

TPS65279DAP

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4.5-V TO 18-V INPUT, DUAL 5-A SYNCHRONOUS STEP-DOWN CONVERTER

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DocumentsDatasheet TPS65279 4.5- to 18-V Input, 5-A/5-A Dual Synchronous Step-Down Converter With Current Sharing datasheet (Rev. C)+3

Integrated Circuits (ICs)

TPS65279DAP

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Texas Instruments

4.5-V TO 18-V INPUT, DUAL 5-A SYNCHRONOUS STEP-DOWN CONVERTER

Deep-Dive with AI

DocumentsDatasheet TPS65279 4.5- to 18-V Input, 5-A/5-A Dual Synchronous Step-Down Converter With Current Sharing datasheet (Rev. C)+3

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	TPS65279DAP

Current - Output	5 A
Frequency - Switching [Max]	1.6 MHz
Frequency - Switching [Min]	200 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	32-PowerTSSOP
Package / Case [x]	0.24 in
Package / Case [y]	6.1 mm
Supplier Device Package	32-HTSSOP
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	18 V
Voltage - Input (Min) [Min]	4.5 V
Voltage - Output (Max) [Max]	15 V
Voltage - Output (Min/Fixed)	0.6 V

TPS65279 Series

4.5-V to 18-V Input, Dual 5-A Synchronous Step-Down Converter

Part	Number of Outputs	Supplier Device Package	Package / Case	Package / Case [x]	Package / Case [y]	Output Configuration	Topology	Function	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Output (Max) [Max]	Voltage - Input (Max) [Max]	Voltage - Output (Min/Fixed)	Current - Output	Frequency - Switching [Min]	Frequency - Switching [Max]	Output Type	Mounting Type	Voltage - Input (Min) [Min]	Board Type	Outputs and Type	Outputs and Type	Supplied Contents	Regulator Topology	Voltage - Output	Current - Output [custom]	Current - Output [custom]	Utilized IC / Part	Voltage - Input [Max]	Voltage - Input [Min]	Contents	Main Purpose	Frequency - Switching
Texas Instruments TPS65279VDAPR	2	32-HTSSOP	32-PowerTSSOP	0.24 in	6.1 mm	Positive	Buck	Step-Down	85 C	-40 ¯C	1.95 V	18 V	0.68 V	5 A	200 kHz	1.6 MHz	Adjustable (Programmable)	Surface Mount	4.5 V
Texas Instruments TPS65279EVM																				Fully Populated	2	2 Non-Isolated Outputs Non-Isolated	Board(s)	Buck	1.2 V 1.8 V	5 A	5 A	TPS65279	18 V	4.5 V	Board(s)	DC/DC Step Down	500 kHz
Texas Instruments TPS65279DAP	2	32-HTSSOP	32-PowerTSSOP	0.24 in	6.1 mm	Positive	Buck	Step-Down	125 °C	-40 C	15 V	18 V	0.6 V	5 A	200 kHz	1.6 MHz	Adjustable	Surface Mount	4.5 V
Texas Instruments TPS65279RHHR	2	36-VQFN (6x6)	36-VFQFN Exposed Pad			Positive	Buck	Step-Down	125 °C	-40 C	15 V	18 V	0.6 V	5 A	200 kHz	1.6 MHz	Adjustable	Surface Mount	4.5 V
Texas Instruments TPS65279VRHHT	2	36-VQFN (6x6)	36-VFQFN Exposed Pad			Positive	Buck	Step-Down	85 C	-40 ¯C	1.95 V	18 V	0.68 V	5 A	200 kHz	1.6 MHz	Adjustable (Programmable)	Surface Mount	4.5 V
Texas Instruments TPS65279VRHHR	2	36-VQFN (6x6)	36-VFQFN Exposed Pad			Positive	Buck	Step-Down	85 C	-40 ¯C	1.95 V	18 V	0.68 V	5 A	200 kHz	1.6 MHz	Adjustable (Programmable)	Surface Mount	4.5 V
Texas Instruments TPS65279RHHT	2	36-VQFN (6x6)	36-VFQFN Exposed Pad			Positive	Buck	Step-Down	125 °C	-40 C	15 V	18 V	0.6 V	5 A	200 kHz	1.6 MHz	Adjustable	Surface Mount	4.5 V
Texas Instruments TPS65279DAPR	2	32-HTSSOP	32-PowerTSSOP	0.24 in	6.1 mm	Positive	Buck	Step-Down	125 °C	-40 C	15 V	18 V	0.6 V	5 A	200 kHz	1.6 MHz	Adjustable	Surface Mount	4.5 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	N/A	0	$ 3.74
		23556	$ 3.74
	Tube	230	$ 4.12
Texas Instruments	TUBE	1	$ 4.46
		100	$ 3.91
		250	$ 2.74
		1000	$ 2.21

Description

General part information

TPS65279 Series

TPS65279 is a monolithic dual synchronous buck converter with wide 4.5-V to 18-V operating input voltage range that encompassed most intermediate bus voltage operating off 5-, 9-, 12- or 15-V power bus or battery. The converter with constant frequency peak current mode control is designed to simplify its application while giving the designers options to optimize their usage according to the target applications.

Two bucks in TPS65279 can be paralleled to delivery up to 10-A load current by using current sharing mode, connect ISHARE pin high. Two phase operation in current sharing reduces system filtering capacitance and inductance, alleviates EMI and improves output voltage ripple and noise.

TPS65279 features a dedicated enable pin. An independent soft-start pin provides flexibility in power up programmability. Constant frequency peak current mode control simplifies the compensation and provides fast transient response. Cycle-by-cycle overcurrent protection and hiccup mode operation limit MOSFET power dissipation in short circuit or over loading fault conditions.

Documents

Technical documentation and resources

Datasheet

TPS65279 4.5- to 18-V Input, 5-A/5-A Dual Synchronous Step-Down Converter With Current Sharing datasheet (Rev. C)

Data sheet

4.5V TO 18V Input, 6A/3.5A Dual Synchronous Step-Down Converter, TPS65279RHHR

User guide

Measure Power Stage Gain and Slope Compensation in PCM (Peak Current Mode) BUCK (Rev. A)

Application note

4.5V TO 18V Input, 5A/5A Dual Synchronous Step-Down Converter, TPS65279DAPR

User guide