Voltage stabilizing system for series resonance wireless charging

The invention discloses a voltage stabilizing system for series resonance wireless charging. The system comprises an alternating current power supply U1, a primary side coil, a secondary side coil, apower regulation unit, an MOS transistor, a hysteresis comparator, a PWM comparator, a capacitor C1, a capacitor C2, an acquisition resistor RS, a reference voltage Uref and a constant voltage Uj, wherein a first end of the alternating current power supply U1 is electrically connected with a first end of the capacitor C1, a second end of the capacitor C1 is electrically connected with a drain electrode of the MOS transistor, a first end of the primary side coil is electrically connected with a source electrode of the MOS transistor, a second end of the primary side coil is electrically connected with a second end of the alternating current power supply U1, a first end of the secondary side coil is electrically connected with a first end of the capacitor C2, and a second end of the secondary side coil is electrically connected with a second end of the acquisition resistor RS. The system is advantaged in that occupation of a main control chip pin resource by the whole machine is reduced,integrated control is realized, the volume of an LC series resonance wireless charging system can be reduced, and the power density of the whole machine is improved.