Specification	UCC28250PW

Clock Sync	False
Control Features	Soft Start, Current Limit, Ramp, Enable, Frequency Control
Frequency - Switching [Max]	1.15 MHz
Frequency - Switching [Min]	85 kHz
Function	Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 C
Output Configuration	Positive
Output Phases	1
Output Type	PWM Signal
Package / Case	20-TSSOP
Package / Case [x]	0.173 "
Package / Case [y]	4.4 mm
Supplier Device Package	20-TSSOP
Synchronous Rectifier	True
Topology	Half-Bridge, Full-Bridge, Push-Pull
Voltage - Supply (Vcc/Vdd) [Max]	17 V
Voltage - Supply (Vcc/Vdd) [Min]	4.7 V

UCC28250 Series

Part	Supplied Contents	Outputs and Type	Outputs and Type	Power - Output	Board Type	Utilized IC / Part	Voltage - Output	Contents	Frequency - Switching	Voltage - Input [Min]	Voltage - Input [Max]	Current - Output	Main Purpose	Regulator Topology	Function	Output Phases	Mounting Type	Topology	Output Type	Supplier Device Package	Output Configuration	Frequency - Switching [Max]	Frequency - Switching [Min]	Package / Case	Package / Case [y]	Package / Case [x]	Number of Outputs	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Control Features
Texas Instruments UCC28250EVM-501	Board(s)	1 Isolated Output Isolated	1	75 W	Fully Populated	UCC28250	3.3 V	Board(s)	1 MHz	36 V	72 V	23 A	DC/DC Step Down	Buck
Texas Instruments UCC28250PW															Step-Up/Step-Down	1	Surface Mount	Full-Bridge Half-Bridge Push-Pull	PWM Signal	20-TSSOP	Positive	1.15 MHz	85 kHz	20-TSSOP	4.4 mm	0.173 "	2	-40 C	125 °C	17 V	4.7 V	Current Limit Enable Frequency Control Ramp Soft Start
Texas Instruments UCC28250EVM-564	Board(s)	1 Isolated Output Isolated	1	100 W	Fully Populated	UCC28250	3.3 V	Board(s)	200 kHz	36 V	75 V	30 A	DC/DC Step Down	Buck
Texas Instruments UCC28250RGPR															Step-Up/Step-Down	1	Surface Mount	Full-Bridge Half-Bridge Push-Pull	PWM Signal	20-QFN (4x4)	Positive	1.15 MHz	85 kHz	20-VFQFN Exposed Pad			2	-40 C	125 °C	17 V	4.7 V	Current Limit Enable Frequency Control Ramp Soft Start
Texas Instruments UCC28250PWR															Step-Up/Step-Down	1	Surface Mount	Full-Bridge Half-Bridge Push-Pull	PWM Signal	20-TSSOP	Positive	1.15 MHz	85 kHz	20-TSSOP	4.4 mm	0.173 "	2	-40 C	125 °C	17 V	4.7 V	Current Limit Enable Frequency Control Ramp Soft Start
Texas Instruments UCC28250RGPT															Step-Up/Step-Down	1	Surface Mount	Full-Bridge Half-Bridge Push-Pull	PWM Signal	20-QFN (4x4)	Positive	1.15 MHz	85 kHz	20-VFQFN Exposed Pad			2	-40 C	125 °C	17 V	4.7 V	Current Limit Enable Frequency Control Ramp Soft Start

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	19	$ 5.26
		6285	$ 5.26
	Tube	1	$ 5.04
		10	$ 4.53
		70	$ 4.28
		140	$ 3.71
		280	$ 3.52
		560	$ 3.16
		1050	$ 2.66
		2520	$ 2.53
Texas Instruments	TUBE	1	$ 3.81
		100	$ 3.33
		250	$ 2.34
		1000	$ 1.88

Description

General part information

UCC28250 Series

The UCC28250 PWM controller is designed for high power density applications that may have stringent prebiased start-up requirements. The integrated synchronous rectifier control outputs target high-efficiency and high-performance topologies such as half-bridge, full-bridge, interleaved forward, and push-pull. The UCC27200 half-bridge drivers and UCC2732X MOSFET drivers used in conjunction with the UCC28250 provide a complete power converter solution.

Externally programmable soft-start, used in conjunction with an internal prebiased start-up circuit, allows the controller to gradually reach a steady-state operating point under all output conditions. The UCC28250 can be configured for primary or secondary-side control and either voltage or current mode control can be implemented.

The oscillator operates at frequencies up to 2 MHz, and can be synchronized to an external clock. Input voltage feedforward, cycle-by-cycle current limit, and a programmable hiccup timer allow the system to stay within a safe operation range. Input voltage, output voltage and temperature protection can be implemented. Dead time between primary-side switch and secondary-side synchronous rectifiers can be independently programmed.

Documents

Technical documentation and resources

Differences Between the UCC28251 and UCC28250 and Evaluation of the UCC28251 in (Rev. A)

Application note

Using the UCC28250EVM-501 Half Bridge DC-DC Converter with Primary Side Control (Rev. B)

EVM User's guide

UCC28250PW

Deep-Dive with AI

UCC28250PW

Deep-Dive with AI

Technical Specifications

UCC28250 Series

Pricing

Description

UCC28250 Series

Documents

Using the UCC28250EVM-564 (Rev. A)

UCC28250 Advanced PWM Controller With Prebias Operation datasheet (Rev. D)

Power Management Guide 2018 (Rev. R)

Designing UCC28250 as a Secondary Side Control with a Pre-Bias Condition

Differences Between the UCC28251 and UCC28250 and Evaluation of the UCC28251 in (Rev. A)

Using the UCC28250EVM-501 Half Bridge DC-DC Converter with Primary Side Control (Rev. B)

UCC28250 Series