A timing control circuit is applied to the in-vehicle center console, and includes a hub, a first resistor, a capacitor, and a voltage conversion circuit. The hub is configured to be coupled to an on board unit, and a power supply control terminal of the hub is coupled to a first terminal of the first resistor. A second terminal of the first resistor is coupled to a first terminal of the capacitor and an input terminal of the voltage conversion circuit, a second terminal of the capacitor is grounded, and an output terminal of the voltage conversion circuit is used to connect an external device.