To address the high-precision requirements for resolver excitation current peak control, this paper designs and implements a high-precision excitation current peak control system based on distributed Delay-Locked Loop (DLL) timing control. By integrating a 7-stage low-offset, high-bandwidth Programmable Gain Amplifier (PGA), a 13-bit hybrid-timing-logic-based Successive Approximation Register Analog-to-Digital Converter (SAR ADC), a 12-bit digital Sinusoidal Pulse Width Modulation (SPWM) module employing a bipolar modulation architecture, and three sets of DLL timing control circuits on-chip, a complete closed-loop excitation current control system is constructed. This system achieves precise sampling and dynamic adjustment of the excitation current peak. Experimental results demonstrate that the designed PWM waveform output achieves a resolution of 1.3 ns and an excitation current peak error of less than ±0.934% at a target current of 400 mA, providing an effective solution for resolver excitation current peak control.