High resolution digital pulse width modulator for control of DC-DC converter with combining of 2 pulse width modulated intermediate signals via logic stage

摘要

The pulse width modulator (1) has a digital pulse width modulation unit (D) receiving a clock signal (clk) and a digital control signal (3) and supplying a first pulse width modulated intermediate signal (Z1) to a programmable signal delay stage (5). The latter provides a second pulse width modulated intermediate signal (Z2) to a logic stage (8), for combining with the first pulse width modulated intermediate signal to provide the pulse width modulated output signal (A). An INTERMEDIATE CLAIM for a method for provision of a high resolution pulse width modulated signal is also included.