WiseWare® WI1101
The WI1101 is a digital AC-DC controller, optimized for wide bandgap (WBG) based SMPS. It is dedicated to controlling the totem pole PFC topology. The controller is capable of operating the converter at high switching frequencies while ensuring ZVS operation for all the power transistors using a proprietary algorithm. The high frequency of operation enables to reduce the magnetic components size helping to further reduce the converter size, weight and thickness.
Features
Optimized functionality to reduce cost and production processes
- Switching frequency up to 2 MHz
- CrCM control mode to ensure full Zero Voltage Switching (ZVS)
- Smooth zero cross transition with no current spike
- Accurate system Brown in and Brown out
- Inrush current management without relay or thermistor
- Integrated protections (OCP, OVP, OTP, OPP)
- Low standby power consumption (18 mW)
- EMC compliant demoboard
- High efficiency system capability (> 98%)
Applications
High efficiency power conversion
High Density Power Conversion
AC-DC Converters
On Board Charger for electric mobility
USB PD, Laptop & Notebook adapter
Display & monitor SMPS
Demoboards 300W Totem Pole PFC (CrM)
- Totem Pole PFC (CrM)
- MCU Digital controller WI11
- Output: 400V
- 98% efficiency
Schematic
