Disclosed are a gate-on voltage generation circuit, a display panel driving device and a display device. The gate-on voltage generation circuit includes an on/off voltage output terminal, a power management integrated circuit and a voltage switching circuit. The power management integrated circuit includes a detection terminal connected to the on/off voltage output terminal, is configured for detecting a voltage output by the on/off voltage output terminal, and outputting first switch control signal or second switch control signal according to the voltage output from the on/off voltage output terminal. The voltage switching circuit includes a first input terminal for inputting a first voltage value and a second input terminal for inputting a second voltage value larger than the first voltage value. The voltage switching circuit outputs the first voltage value upon receiving the first switch control signal, and outputs the second voltage value upon receiving the second switch control signal.