UCC25600 Texas instruments

UCC25600

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UCC25600

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Описание

The UCC25600 high performance, resonant mode controller is designed for dc-to-dc applications using resonant topologies, especially the LLC half-bridge resonant converter. This highly integrated controller implements frequency modulation control and complete system functions in only an 8-pin package. Switching to the UCC25600 will greatly simplify the system design and layout, and improve time to market, all at a price point lower than competitive 16-pin device offerings. The internal oscillator supports the switching frequencies from 40 kHz to 350 kHz. This high-accuracy oscillator realizes the minimum switching frequency limiting with 4% tolerance, allowing the designer to avoid over-design of the power stage and, thus, further reducing overall system cost. The programmable dead time enables zero-voltage switching with minimum magnetizing current. This maximizes system efficiency across a variety of applications. The programmable soft-start timer maximizes design flexibility demanded by the varied requirements of end equipment using a half-bridge topology. By incorporating a 0.4-A source and 0.8-A sink driving capability, a low cost, reliable gate driver transformer is a real option. The UCC25600 delivers complete system protection functions including overcurrent, UVLO, bias supply OVP, and overtemperature protection.

Variable Switching Frequency Control
Programmable Minimum Switching Frequency
With 4% Accuracy (3% Accuracy at Temperature
Range: –20°C to 105°C)
Programmable Maximum Switching Frequency
Programmable Dead Time for Best Efficiency
Programmable Soft-Start Time
Easy ON and OFF Control
Overcurrent Protection
Overtemperature Protection
Bias Voltage UVLO and Overvoltage Protection
Integrated Gate Driver With 0.4-A Source and 0.8-
A Sink Capability
Operating Temperature Range: –40°C to 125°C
SOIC 8-Pin Package

Control mode	Voltage
Features	No high-voltage gate driver, Programmable soft start, Programmable switching frequency, Variable switching frequency control
Vin (min) (V)	11
Vin (max) (V)	18
Operating temperature range (°C)	-40 to 125
Topology	Full bridge, Half bridge, LLC
Rating	Catalog