A multi-phase DC/DC converter having an output voltage and including a plurality
of converter channels. Each converter channel includes a converter channel input
and a converter channel output. Each converter channel is configured for generating
a converter channel current and for adjusting said converter channel current in
response to a control signal electrically connected to each converter channel input.
A control circuit generates an error signal representative of a comparison of the
converter output voltage to a reference voltage. The control circuit includes a
plurality of control circuit channels, each of which correspond to a converter
channel. Each control circuit channel generates a channel current signal representative
of a corresponding converter channel current, and generates a differential channel
current signal representative of a comparison of the channel current signal to
an average current signal. The average current signal is representative of an overall
average current for the converter channels. Each control circuit channel generates
a differential error signal representative of a comparison of the error signal
to the differential channel current signal. Each control circuit channel includes
a pulse width modulator having a ramp input and a control input. The control input
is electrically connected to the differential error signal. The pulse width modulator
generates the control signal based upon the differential error signal. The control
signal is electrically coupled to a corresponding converter channel input. The
control circuit generates the average current signal.