Patent ID: 6590791
Filing Date: 2003-07-08
Classification: H02M,Y02B

Abstract:
A voltage regulator module (VRM), for transforming a first DC voltage to a second DC voltage, comprising:a first switch; a first primary transformer coil; a second switch; and a second primary transformer coil, wherein said first switch, said first primary transformer coil, said second switch and said second primary transformer coil being alternately connected in a loop and being the only primary coils and switches in the VRM; a capacitor connected at a first node between said first switch and said second primary transformer coil and at a second node between said second switch and said first primary transformer coil, which discharges energy leakage from said first primary transformer coil and said second primary transformer coil to zero; a voltage source terminal connected between said first switch and said first primary transformer coil for inputting a first DC voltage; and a ground terminal connected between said second primary transformer coil and said second switch, wherein said first switch and said second switch open and close to charge and discharge said capacitor and energize said first and second primary transformer coils to induce a current in a secondary transformer coil for outputting a second DC voltage.