An On-chip Thermoelectric Cooler Controller With Improved Driving Current of 2 A at 0.5 Ω Load

An on-chip thermoelectric cooler (TEC) controller with improved current driving capability, is designed and implemented in a standard 65 nm CMOS technology, with V
DD
of 1 V. The fully monolithic controller incorporates the error amplifier, the control and compensation mechanism, the driver circuitry, the filter, and the current enhancement circuit. The filter is devised using a second-order circuit with transconductance-capacitance (G
m
C based active inductor. The proposed controller comprises the high-swing current driver at the output stage to satisfy the increased and stable current requirements for larger cooling demands. The extensive simulation results show an output current limit of 2 A, and an efficiency $(\eta)$ level of 85% at a load of $0.5 \Omega$. In the case of output current and efficiency, respectively, the statistical mismatch analysis shows $15 \mu \mathrm{A}$ and 0.7% of mean deviation over $6 \sigma$ in the temperature range of $-20^{\circ}\mathrm{C}$ to $+ 100^{\circ}\mathrm{C}$.