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TI UCC28950PWRRoHS

Manufacturer
TI
MPN
UCC28950PWR
LCSC Part #
C91312
Packaging
TSSOP-24
Customer #
Key Attributes
UCC28950 Green Phase-Shifted Full-Bridge Controller With Synchronous Rectification
Datasheetpdf iconTI UCC28950PWR
In-Stock: 516
516 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 5.1464$ 5.15
10+$ 4.3617$ 43.62
30+$ 3.8944$ 116.83
100+$ 3.4223$ 342.23
500+$ 3.2058$ 1602.90
1,000+$ 3.1064$ 3106.40
Standard Packaging2000/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers
ManufacturerTI
PackagingTSSOP-24
Operating Temperature-40℃~+125℃
Output Current200mA
FeaturesSynchronous rectification drive;Light load efficient mode;Adjustable soft-start;Slope compensation;Under-voltage lockout;Hiccup current limiting;Over Current Protection;Overtemperature protection (OTP);Under Voltage Protection
TopologyFull-Bridge
Duty Cycle(Max)95%
Feedback System-
Working ModeDCM
Operating Voltage8V~17V
Frequency - Switching50kHz~1MHz
Output Voltage5V
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging2000
Sales UnitPiece

Introduction

AI Translation

The UCC28950 enhanced phase-shifted controller builds upon Texas Instrument’s industry standard UCx895 phase-shifted controller family with enhancements that offer best in class efficiency in today’s high performance power systems. The UCC28950 implements advanced control of the fullbridge 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. In addition, the UCC28950 includes support for current or voltage mode control. Programmable switching frequency up to 1 MHz and a wide set of protection features including cycle-by-cycle current limit, UVLO and thermal shutdown. A 90-degree phase-shifted interleaved synchronized operation can be easily arranged between two converters. The UCC28950 is available in TSSOP-24 package.

Features

AI Translation
  • Enhanced Wide Range Resonant Zero Voltage Switching (ZVS) Capability
  • Direct Synchronous Rectifier (SR) Control
  • Light-Load Efficiency Management Including
  • Burst Mode Operation
  • Discontinuous Conduction Mode (DCM)
  • Dynamic SR On and Off Control with Programmable Threshold
  • Programmable Adaptive Delay
  • 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 1 MHz with Bi-Directional Synchronization (±3%)
  • Cycle-by-Cycle Current Limit Protection With Hiccup Mode Support
  • 150-μA Start-Up Current
  • VDD Undervoltage Lockout
  • Wide Temperature Range -40°C to +125°C

Applications

AI Translation
  • Phase-Shifted Full-Bridge Converters
  • Datacom, Telecom, and Wireless Base-Station Power
  • Server, Power Supplies
  • Industrial Power Systems
  • High-Density Power Architectures
  • Solar Inverters, and Electric Vehicles