| Control mode | Voltage |
| Features | LLC, Variable switching frequency control, programmable switching frequency, Programmable soft-start, No high voltage gate driver |
| Operating temperature range (C) | -40 to 125 |
| Vin (Max) (V) | 18 |
| Vin (Min) (V) | 11 |
| Topology | Half-Bridge, Resonant LLC |
| Rating | Catalog |
- 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
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.
