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Download fileAn Eight-Channel Switching-Linear Hybrid Dynamic Regulator with Dual-Supply LDOs for Thermo-Optical Tuning
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posted on 2021-10-12, 03:56 authored by Siyuan ZhangSiyuan Zhang, min tanmin tan, Xingze WangA novel switching-linear hybrid dynamic regulator with dual-supply LDOs for thermo-optical tuning is presented in this brief. Compared with conventional designs, the proposed design leverages the intrinsic dual supplies to extend the operating range of the LDOs, and increases the thermo-optical tuning efficiency by reducing the dropout of the LDOs through dynamic voltage tracking. It can simultaneously regulate eight output channels and track 0.8 Vpp sinusoidal waveforms at different frequencies. Significant efficiency improvement of the proposed design is achieved for envelope signals with a small difference, which is common in thermo-optical tuning. Implemented in 130 nm CMOS process, the proposed design has a total chip area of 0.675 mm2. The proposed design achieves a conversion efficiency of 88% at 1 V output driving a 200 ohms load. Its dynamic efficiency is about 80% when tracking 50 kHz sinusoidal signals.
Funding
National Natural Science Foundation of China, 61904061
Major State Basic Research Development Program of China, 2018YFA0704400
Fundamental Research Funds for the Central Universities, HUST, 2019kfyXKJC037
History
Email Address of Submitting Author
mtan@hust.edu.cnORCID of Submitting Author
0000-0002-5531-6198Submitting Author's Institution
Huazhong University of Science and Technology, Wuhan 430074, ChinaSubmitting Author's Country
- China