Comparative Assessment of Gate Drive Control Schemes in High Frequency Converter

N. Z. Yahaya, K. M. Begam, M. Awan

Abstract


Several gate drive control schemes are simulated and the results show that the Fixed Duty ratio (FDR) can help drive synchronous rectifier buck converter (SRBC) correctly with low dead time and hence reduce body diode conduction loss. Even though FDR is prone to cross-conduction effects, the design is simple. Apart from that, Adaptive Gate Delay (AGD) and Predictive Gate Delay (PGD) control schemes have also shown high level of efficiency. However, AGD generates more losses. Even though the total switching loss in PGD has not improved much of only 1 %, more than 82 % efficiency has been achieved in spite of the advantage in FDR and AGD schemes.


Keywords


gate drive control; high frequency; PSpice simulation; synchronous rectifier buck converter

Full Text:

PDF

References


D. Leggate, R. J. Kerkman, “Pulse-Based Dead-Time Compensator for PWM Voltage Inverters” in IEEE 21st Int. Conf. Ind. Electron., Contr. and Instr., USA, Vol. 1, pp. 474-481, 1995

K. Yamamoto, K. Shinohara, H. Ohga, “Effect of Parasitic Capacitance of Power Device on Output Voltage Deviation during Switching Dead-Time in Voltage-Fed PWM Inverter” in Proc. Power Conv. Conf., Japan, Vol. 2, pp. 777-782, 1997

C. Jung-Soo, Y. Ji-Yong, L. Seung-Won, K. Young-Seok “A Novel Dead Time Minimization Algorithm of the PWM Inverter” in IEEE 34th Annu. Meet. Ind. App. Conf., Vol. 4, pp. 2188-2193, 1999

T. Y. Ahn, H. J. Kim, K. Harada, “Fixed Frequency, Fixed Duty Ratio Controlled Forward ZVS-MRC Using A Saturable Core” in IEEE of 24th Annu. Power Electron. Spec. Conf., pp. 551-557, 1993

T.Y. Ahn, H.J. Kim, K. Harada, “Fixed Frequency Forward ZVS-MRC Using A Saturable Core” in 15th Int. Telecom. Energy Conf., Vol. 1, pp. 334-340, 1993

A. Chapuis, M. Hill, “Adaptive Delay Control Circuit for Switched Mode Power Supply”, U. S. Patent 6958592 B2, 2005

S. Mappus, “Predictive Gate Drive Boost Synchronous DC/DC Power Converter Efficiency” App. Rep. Texas Instruments SLUA281, 2003

M. L. Chiang, L. C. Fu, "Adaptive Control of Switched Systems with Application to HVAC System” in IEEE Int. Conf. Contr. Applications, pp 367-372, 2007

J. S. Brown, “Method and Apparatus for Intelligently Setting Dead Time”, U. S. Patent: 7098640 B2, 2006

N. Z. Yahaya, K. M. Begam, M. Awan “Design and Simulation of an Effective Gate Drive Scheme for Soft-Switched Synchronous Buck Converter” in IEEE 3rd Asia Int. Conf. Mod. & Sim., pp. 751–756, 2009




eISSN: 1792-8036     pISSN: 2241-4487