8 引脚高性能谐振模式控制器
The 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.
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- Variable Switching Frequency Control
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- Programmable Minimum Switching Frequency
With 4% Accuracy 3% Accuracy at Temperature
Range: –20°C to 105°C
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- Programmable Maximum Switching Frequency
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- Programmable Dead Time for Best Efficiency
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- Programmable Soft-Start Time
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- Easy ON and OFF Control
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- Overcurrent Protection
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- Overtemperature Protection
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- Bias Voltage UVLO and Overvoltage Protection
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- Integrated Gate Driver With 0.4-A Source and 0.8-
A Sink Capability
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- Operating Temperature Range: –40°C to 125°C
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- SOIC 8-Pin Package