A dual VCDL DLL based gate driver for zero-voltage-switching DC-DC converter |
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| Tian Xin, Liu Xiangxin, Li Wenhong. A dual VCDL DLL based gate driver for zero-voltage-switching DC-DC converter[J]. Journal of Semiconductors, 2010, 31(7): 075012. doi: 10.1088/1674-4926/31/7/075012 Tian X, Liu X X, Li W H. A dual VCDL DLL based gate driver for zero-voltage-switching DC-DC converter[J]. J. Semicond., 2010, 31(7): 075012. doi: 10.1088/1674-4926/31/7/075012.Export: BibTex EndNote |
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| Authors: | Tian Xin Liu Xiangxin Li Wenhong |
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| Affiliation: | State Key Laboratory of ASIC & System, Fudan University, Shanghai 201203, China;State Key Laboratory of ASIC & System, Fudan University, Shanghai 201203, China;State Key Laboratory of ASIC & System, Fudan University, Shanghai 201203, China |
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| Abstract: | This paper presents a dual voltage-controlled-delay-line (VCDL) delay-lock-loop (DLL) based gate driver for a zero-voltage-switching (ZVS) DC-DC converter. Using the delay difference of two VCDLs for the dead time control, the dual VCDL DLL is able to implement ZVS control with high accuracy while keeping good linearity per-formance of the DLL and low power consumption. The design is implemented in the CSM 2P4M 0.35μm CMOS process. The measurement results indicate that an efficiency improvement of 2%-4% is achieved over the load current range from 100 to 600 rnA at 4 MHz switching frequency with 3.3 V input and 1.3 V output voltage. |
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| Keywords: | voltage-control-delay-line delay-lock-loop delay-unit zero-voltage-switching pseudo-current-control-inverter |
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