Patent ID: 7023182

Claim:
A phase activation control system for a multiphase DC/DC converter, the multiphase DC/DC converter including a first phase circuit providing a first pulse width modulation (PWM) signal and having a reduce input for reducing duty cycle of the first PWM signal and including a second phase circuit providing a second PWM signal and having an enable input and an increase input for increasing duty cycle of the second PWM signal, said phase activation control system comprising: an amplifier circuit having an enable input, a current sense input for sensing output current of the multiphase DC/DC converter and an output providing an adjust signal; wherein said adjust signal is provided to the reduce input of the first phase circuit and to the increase input of the second phase circuit; and enable logic having an input receiving a phase enable signal, a first output coupled to said enable input of said amplifier circuit, and a second output for coupling to the enable input of the second phase circuit.