Specification	TPS40055MPWPREP

Clock Sync	True
Control Features	Enable, Soft Start, Frequency Control, Current Limit
Duty Cycle (Max) [Max]	94 %
Frequency - Switching [Max]	1 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-55 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	16-PowerTSSOP
Package / Case	0.173 in, 4.4 mm Width
Supplier Device Package	16-HTSSOP
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	40 V
Voltage - Supply (Vcc/Vdd) [Min]	8 V

TPS40055-EP Series

Enhanced Product Wide Input Synchronous Buck Controller

Part	Control Features	Frequency - Switching [Max]	Output Type	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Function	Output Configuration	Operating Temperature [Max]	Operating Temperature [Min]	Number of Outputs	Package / Case	Package / Case	Output Phases	Topology	Duty Cycle (Max) [Max]	Mounting Type	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Supplied Contents	Main Purpose	Voltage - Input [Min]	Voltage - Input [Max]	Voltage - Output	Current - Output	Outputs and Type	Outputs and Type	Utilized IC / Part	Board Type	Regulator Topology	Frequency - Switching
Texas Instruments TPS40055MPWPREP	Current Limit Enable Frequency Control Soft Start	1 MHz	Transistor Driver	8 V	40 V	Step-Down	Positive	125 °C	-55 °C	1	16-PowerTSSOP	0.173 in 4.4 mm Width	1	Buck	94 %	Surface Mount	16-HTSSOP
Texas Instruments TPS40055PWPRG4	Current Limit Enable Frequency Control Soft Start	1 MHz	Transistor Driver	8 V	40 V	Step-Down	Positive			1	16-PowerTSSOP	0.173 in 4.4 mm Width	1	Buck	94 %	Surface Mount	16-HTSSOP	85 °C	-40 °C
Texas Instruments TPS40055EVM-002																				Board(s)	DC/DC Step Down	10 V	40 V	5 V	3 A	Non-Isolated	1	TPS40055	Fully Populated	Buck	300 kHz
Texas Instruments TPS40055EVM-001																				Board(s)	DC/DC Step Down	10 V	14 V	1.8 V	15 A	Non-Isolated	1	TPS40055	Fully Populated	Buck	300 kHz
Texas Instruments TPS40055PWPG4	Current Limit Enable Frequency Control Soft Start	1 MHz	Transistor Driver	8 V	40 V	Step-Down	Positive			1	16-PowerTSSOP	0.173 in 4.4 mm Width	1	Buck	94 %	Surface Mount	16-HTSSOP	85 °C	-40 °C

Pricing

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

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 10.19
		10	$ 9.21
		25	$ 8.78
		100	$ 7.62
		250	$ 7.28
		500	$ 6.64
		1000	$ 5.78
	Digi-Reel®	1	$ 10.19
		10	$ 9.21
		25	$ 8.78
		100	$ 7.62
		250	$ 7.28
		500	$ 6.64
		1000	$ 5.78
	Tape & Reel (TR)	2000	$ 5.57
Texas Instruments	LARGE T&R	1	$ 8.97
		100	$ 7.32
		250	$ 5.75
		1000	$ 4.88

Description

General part information

TPS40055-EP Series

The TPS40055 is a family of high-voltage, wide input (8 V to 40 V), synchronous, step-down converters. The TPS40055 family offers design flexibility with a variety of user programmable functions, including soft-start, UVLO, operating frequency, voltage feed-forward, high-side current limit, and loop compensation.

The TPS40055 are also synchronizable to an external supply. The TPS40055 incorporates MOSFET gate drivers for external N-channel high-side and synchronous rectifier (SR) MOSFETs. Gate drive logic incorporates anti-cross conduction circuitry to prevent simultaneous high-side and synchronousrectifier conduction.

The TPS40055 uses voltage feed-forward control techniques to provide good line regulation over the wide (4:1) input voltage range and fast response to input line transients with near constant gain with input variation which eases loop compensation. Theexternally programmable current limit provides pulse-by-pulse current limit, as well as a hiccup mode operation utilizing an internal fault counter for longer duration overloads.

Documents

Technical documentation and resources

Wide Input Synchronous Buck Controller - TPS40055-EP. datasheet (Rev. D)

Data sheet