High-precision PWM pulse generation circuit and chip

The invention discloses a high-precision PWM pulse generation circuit and a chip. The PWM pulse generation circuit comprises a PWM pulse group unit, an output logic unit and a precision control unit. Wherein the input ports of one group of delay clock signals are respectively and correspondingly connected with one group of input ends of the PWM pulse group unit, the input port of the first control signal is connected with the control end of the PWM pulse group unit, and one group of output ends of the PWM pulse group unit are respectively and correspondingly connected with the first group of input ends of the output logic unit; an input port of a second control signal is connected with an input end of the precision control unit, a group of output ends of the precision control unit are correspondingly connected with a second group of input ends of the output logic unit respectively, and an output end of the output logic unit is connected with an output end of the PWM pulse generation circuit. The PWM pulse gen