UCC25600D, LLC контроллер, Resonant Mode [SOIC-8]

The UCC25600D is a 8-pin High Performance Resonant Mode Controller designed for DC-to-DC applications using resonant topologies, especially the LLC half-bridge resonant converter. The internal oscillator supports the switching frequencies from 40 to 350kHz. 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 0.4A source and 0.8A sink driving capability, a low cost, reliable gate driver transformer is a real option.

• Variable switching frequency control
• Programmable minimum switching frequency with 4% accuracy (3% accuracy, -20 to 105°C temperature)
• Programmable maximum switching frequency
• Programmable dead time for best efficiency
• Programmable soft-start time
• Easy ON and OFF control
• Over-current protection
• Over-temperature protection
• Bias voltage UVLO and overvoltage protection
• Integrated gate driver with 0.4A source and 0.8A sink capability
• Green product and no Sb/Br

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