grenergy GR8030
The GR8030 is designed for programming the curve of DC fan speed versus temperature via a NTC thermistor and few counts of passive components. The speed curve includes anti-lock with full speed operation time, minimum fan speed when at idle state, a knee point where fan speed starts to accelerate when temperature over the set point, a programmable slope of fan speed versus temperature, and OTP (over-temperature protection) trig point. The GR8030 sends a low level on FSC pin Applications LCD TV power supply Game machine power supply Industrial or medical power supply PC power supply Server power supply when the OTP pin is lower than the set point of temperature protection level.