UCC28950PW - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

UCC28950PW
Manufacturer

TI
ChipWorker Part#

CW6170844
Category

Voltage Regulator
Package

TSSOP-24
Description

Soft Sw PWM Cntrlr 1Out Phase Shifted Full Bridge Controller 12V 1MHz 24Pin TSSOP T/R
Documentation

Datasheet

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UCC28950PW Specifications

Attribute	Attribute Value

Part Number	UCC28950PW
Manufacturer	TI
ChipWorker Part#	CW6170844
Category	Voltage Regulator
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	24 Pin
Case/Package	TSSOP-24
Frequency	1 MHz
Supply Voltage (DC)	8.00V (min)
Number of Outputs	1 Output
Input Voltage (DC)	3.60 V
Output Voltage	5 V
Output Current	20 mA
Number of Positions	24 Position
Number of Regulated Outputs	4 Output
Rise Time	9 ns
Output Power	1.12 W
Switching Frequency	1000 kHz
Topology	Full-Bridge
Duty Cycle	97 %
Maximum Duty Cycle	0.95
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	8V ~ 17V
Supply Voltage (Max)	17 V
Supply Voltage (Min)	8 V
Input Voltage	3.6 V
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Size-Length	7.9 mm
Size-Width	4.5 mm
Size-Height	1.05 mm
Operating Temperature	-40℃ ~ 125℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99
HK STC License	NLR

Product Description

The UCC28950PW is a Green Phase-shifted Full-bridge Controller with synchronous rectification. It implements advanced control of the full-bridge along with active control of the synchronous rectifier output stage. The primary-side signals allow programmable delays to ensure ZVS operation over wide-load current and input voltage range, while the load current naturally tunes the secondary-side synchronous rectifiers switching delays, maximizing overall system efficiency. The UCC28950 also offers multiple light-load management features including burst mode and dynamic SR on/off control when transitioning in and out of Discontinuous Current Mode (DCM) operation, ensuring ZVS operation is extended down to much lighter loads. This includes support for peak current along with voltage mode control, programmable switching frequency up to 1MHz and a wide set of protection features including cycle-by-cycle current limit, UVLO and thermal shutdown.
Enhanced wide range resonant zero voltage switching (ZVS) capability
Direct synchronous rectifier (SR) control
Light-load efficiency management
Average or peak current mode control with programmable slope compensation and voltage mode control
Naturally Handles pre-biased start up with DCM mode
Closed loop soft start and enable function
Programmable Switching frequency up to 1MHz with bi-directional synchronization
(±3%) Cycle-by-cycle current limit protection with hiccup mode support
150µA Start-up current
VDD under-voltage lockout
Green product and no Sb/Br
ESD sensitive device, take proper precaution while handling the device.

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