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AN2785 Datasheet(PDF) 1 Page - STMicroelectronics |
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AN2785 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 51 page  December 2009 Doc ID 14785 Rev 1 1/51 AN2785 Application note L6393 half bridge gate driver Introduction The L6393 is a versatile high-voltage gate driver IC particularly suited to motor driving applications. It simplifies the design of control systems for a wide range of motor applications such as home appliances, industrial drives, DC motors and fans. Developed using BCD offline technology, the device can operate with voltage rails up to 600 V. The gate driver provides all the functions and current capability necessary for high-side and low-side power MOS and IGBT driving. The L639x are high voltage half-bridge gate drivers. These devices can be used in all applications where high voltage shifted control is necessary. The devices have a driver current capability best suited for motor driving ratings and they are also equipped with patented internal circuitry which replaces the external bootstrap diode. This feature is achieved by means of a high-voltage DMOS synchronously driven with the low-side gate driver. The L6393 is an half-bridge driver with several functionalities such as externally adjustable dead-time, shut-down function and an uncommitted comparator. The outputs can be driven by a special logic input interface particularly suitable for phase/brake functions. The device is available in DIP-14 or SO-14 packages. Figure 1. L6393 application block diagram UV DETECTION LEVEL SHIFTER BOOTSTRAPDRIVER S VCC LVG DRIVER VCC HVG DRIVER HVG H.V. TO LOAD OUT LVG BOOT Cboot UV DETECTION + - GND CPOUT R LOGIC SHOOT THROUGH PREVENTION FLOATINGSTRUCTURE COMPARATOR CP+ 5V 10 12 13 14 7 8 4 9 6 CP- SD 2 DT DEAD TIME 5 from LVG BRAKE PHASE 1 3 www.st.com |
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Similar Description - AN2785 |
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