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TI UCC28951PWRRoHS

Manufacturer
TI
MPN
UCC28951PWR
LCSC Part #
C1849524
Packaging
TSSOP-24
Customer #
Key Attributes
Phase-shifted full-bridge controller suitable for wide input voltage range applications
Datasheetpdf iconTI UCC28951PWR
In-Stock: 60
60 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 3.1474$ 3.15
10+$ 2.7017$ 27.02
30+$ 2.4382$ 73.15
100+$ 2.1698$ 216.98
500+$ 2.0478$ 1023.90
1,000+$ 1.9909$ 1990.90
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
FeaturesCycle-by-cycle current limiting;Hiccup current limiting;Adjustable soft-start;Light load efficient mode;Frequency synchronization
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging2000
Sales UnitPiece

Introduction

AI Translation

The UCC28951 device is an enhanced version of the UCC28950 and a fully compatible, drop-in replacement for the UCC28950. The UCC28951 uses advanced full-bridge control and actively controls the synchronous rectifier (SR) output stage. Programmable delays ensure that ZVS can operate under a wide range of operating conditions, and the load current can reasonably adjust the switching delay of the secondary-side synchronous rectifier (SR), which maximizes the overall system efficiency. The UCC28951 has many light-load management features, including burst-mode operation and dynamic SR on/off control when switching in and out of discontinuous current mode (DCM). This device operates under current-mode or voltage-mode control. The switching frequency is programmable up to 1 MHz. The device has protection features, including cycle-by-cycle current limit, UVLO, and thermal shutdown. The 24-pin TSSOP package is RoHS compliant.

Features

AI Translation
  • Enhanced Zero Voltage Switching (ZVS) range
  • Direct Synchronous Rectifier (SR) control
  • Light-load efficiency management, including:
    • Burst mode operation
    • Discontinuous Conduction Mode (DCM) with dynamic SR switching control supporting programmable threshold
    • Programmable adaptive delay
  • Average or peak current mode control with programmable slope compensation and voltage mode control support
  • Closed-loop soft-start and enable functionality
  • Programmable switching frequency up to 1MHz with bidirectional synchronization (±3%)
  • Cycle-by-cycle current limit protection with DCM support

Applications

AI Translation
  • Phase-shift full-bridge converter
  • Server power supplies
  • Industrial power systems
  • High-density power architectures