Patent ID: 8270129

Claim:
Device arranged for converting an AC input voltage to a DC output voltage, comprising: a bridgeless boost converter; and a surge protection system comprising: a first protection diode (Dprot 1 ), where the anode is connected to a first AC input terminal of the bridgeless boost converter and the cathode is connected to a positive boost output terminal (Obp) of the bridgeless boost converter; a second protection diode (Dprot 2 ), where the anode is connected to a negative boost output terminal (Obn) of the bridgeless boost converter and the cathode is connected to the first AC input terminal of the bridgeless boost converter; a third protection diode (Dprot 3 ), where the anode is connected to a second AC input terminal of the bridgeless boost converter and the cathode is connected to the positive boost output terminal (Obp) of the bridgeless boost converter; and a fourth protection diode (Dprot 4 ), where the anode is connected to the negative boost output terminal (Obn) of the bridgeless boost converter and the cathode is connected to the second AC input terminal of the bridgeless boost converter.