Patent ID: 6937000

Claim:
A method for controlling a boost converter with a cross regulation controller, wherein said boost converter comprises a first switch element, a second switch element, a first output capacitor, and a second output capacitor, said first switch element is connected to said second switch element at a first node in series, said first output capacitor is connected to said second output capacitor at a second node in series, and said first node is electrically connected to said second node, and said controller comprises a first processor, a second processor, a first modulator, a second modulator, a first pulse generation unit, and a second pulse generation unit, said method comprising steps of: (a) detecting a first voltage through sampling a voltage across said first output capacitor and a second voltage through sampling a voltage across said second output capacitor respectively; (b) setting a reference voltage; (c) obtaining a first output signal and a second output signal through processing said second voltage and said reference voltage by said first processor, and processing said first voltage and said reference voltage by said second processor respectively; (d) generating a first voltage modulated signal and a second voltage modulated signal through processing said first output signal by said first modulator, and processing said second output signal by said second modulator respectively; (e) generating a first driving signal and a second driving signal through processing said first voltage modulated signal by said first pulse generation unit, and processing said second voltage modulated signal by said second pulse generation unit respectively; and (f) controlling said first switch element to be in one of an open status and a close status and said second switch element to be in one of an open status and a close status through said first driving signal and said second driving signal respectively so as to achieve a balancing status between said first voltage and said second voltage.