Presentation Information
[23a-1BM-3]Low Power Voltage Comparator with Pulse Generation for Power Management in Optically-powered Microelectronic Devices
〇(D)Reyhan Ramadhan1, Yasufumi Yokoshiki1, Takashi Tokuda1 (1.Tokyo Tech)
Keywords:
voltage comparator,biomedical device,CMOS design
Integrated microelectronic device has been increasingly used for various applications, including biomedical implants. Power management circuits such as charge pump and power-on reset (POR) are typically used to provide sufficient supply voltage and power density for the device. Voltage comparator circuit is a common component of power management circuits and other analog circuits. Two-transistor (2T) topology has been conventionally used, but this topology has a high quiescent power consumption due to shoot-through current. To address this issue, we present a modified voltage comparator design that eliminates shoot-through current. This improvement allows the circuit to be used in low-power biomedical implants. Additionally, a pulse generation feature is added for applications where periodic over/undervoltage signaling is desired.