Developing scalable control electronics is one of the central challenges in building large-scale trapped-ion quantum processors. Conventional QCCD-based systems typically assign one DAC per trap electrode, which becomes impractical as the number of electrodes grows due to the resulting complexity in hardware and wiring. To mitigate this bottleneck, we have developed a time-division multiplexing (TDM) approach that allows a single high-speed DAC to sequentially generate voltage signals for multiple electrodes. In this work, we describe the architecture of our TDM-based control system [1] and present experimental results demonstrating its capability to operate a surface-electrode ion trap [2].