Provide a layered conceptual schematic:

The schematic operates based on Single Phase Shift (SPS) control. The power transfer equation is derived as: $$ P = \fracn V_in V_out D (1 - D)2 f_s L_k $$ Where:

The schematic allows energy to flow bidirectionally by adjusting the phase angle $\phi$ between the primary and secondary bridges.

If you cannot source the original Xin Zhi Zhao chip or need a better-documented part, consider these direct replacements (same schematic):

(For practical design use, translate each block into specific part numbers chosen for target constraints — e.g., STM32/ESP32/ARM Cortex-M variants, Bosch/BME sensor family, Nordic/Broadcom radio ICs, Ambiq/GreenWaves NPUs.)