Design of A Half-Bridge Bootstrap Circuit For Grid Inverter Application Controled By Pic24fj128ga010

This paper explains a design of a bootstrap circuit to drive a half-bridge inverter circuit, The standard bootstrap circuit consists of a driver IC and three external components (RBoot, DBoot and CBoot) for inverter application . However, the bootstrap circuits had shown some weakness such as having adequate components to allow a high performance. This article shows how to select the bootstrap driver circuit parameters and using IR2112 to drive a power IGBTs inverter with a low energy consumption. In this paper, the PWM signal is generated by using a PIC24FJ128GA010 microcontroller and interfaced to the bootstrap circuit. The paper discusses the advantage and disadvantages of the bootstrap.

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