UCC28950PWR

200mA 5V TSSOP-24 DC DC Switching Controllers RoHS

TSSOP-24ROHS3 CompliantActive

UCC28950 Green Phase-Shifted Full-Bridge Controller With Synchronous Rectification

Manufacturer: TI
Manufacturer part #: UCC28950PWR
Store part #: C91312
Package / case: TSSOP-24
Category: DC DC Switching Controllers
Packaging: Tape & Reel (TR)

Datasheet (PDF)

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1,192 in stock

#C91312

Stock & price checked 5 days ago

Quantity	Unit price	Pack price
1+	₹868.17	₹868.17
10+	₹761.28	₹7,612.80
30+	₹696.32	₹20,889.60
100+	₹641.79	₹64,179.00

Quantity (min 1)

1 × ₹868.17

₹868.17

excl. GST

₹1,024.44 incl. 18% GST

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Standard pack: 2,000 per reel

UCC28950PWR

₹868.17 for 1 + GST

Specifications

Operating Temperature: -40℃~+125℃
Output Current: 200mA
Features: Synchronous 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
Topology: Full-Bridge
Duty Cycle(Max): 95%
Working Mode: DCM
Operating Voltage: 8V~17V
Frequency - Switching: 50kHz~1MHz
Output Voltage: 5V

Packaging & compliance

RoHS: ROHS3 Compliant
Lifecycle: Active
ECCN: EAR99
Packaging: Tape & Reel (TR)
Standard pack: 2,000 / Reel
Sold per: Piece
Minimum order: 1
Unit weight: 0.026 g

Overview

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.

Applications

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

Key features

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