This paper proposes a pulse power topology and its prototype implementation for power tower defect detection. The pulse power topology adopts new switching devices, which can meet the requirements of fast and adjustable pulse Defect detection of power poles and towers requires the generation of pulsed power supplies with sub-nanosecond rise times at voltages of tens of kilovolts. To achieve this, traditional pulsed power supplies are introduced into solid-state switching devices. The proposed pulsed power supply is designed as the topology structure which consists of multiple stacked coaxial layers, where each layer consists of a printed circuit board (PCB) containing multiple switching devices. Then, the 3D electromagnetic simulation analysis of the proposed pulse power supply is carried out, and a 5 kV pulse power supply prototype is designed. The test prototype can achieve a pulse rise time of 6 ns under a load of 2.5 kV and 50 Ω, verifying that the proposed power supply can generate flexible pulse waveforms, verifying the effectiveness of the proposed design method.