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IRAUDAMP4 Datasheet(PDF) 11 Page - International Rectifier |
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IRAUDAMP4 Datasheet(HTML) 11 Page - International Rectifier |
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11 / 44 page  www.irf.com 10 RD-0617 Figure 6. THD+N Ratio vs. Output Power for Different Switching Frequency Lock/Synchronization Conditions IRS20955 Gate Driver IC The IRAUDAMP4 uses the IRS20955, which is a high-voltage (up to 200 V), high-speed power MOSFET gate driver with internal deadtime and protection functions specifically designed for Class D audio amplifier applications. These functions include OCP and UVP. A bi-directional current protection feature that protects both the high-side and low- side MOSFETs are internal to the IRS20955, and the trip levels for both MOSFETs can be set independently. In this design, the deadtime can be selected for optimized performance, by minimizing deadtime while limiting shoot-through. As a result, there is no gate-timing adjustment on the board. Selectable deadtime through the DT pin voltage is an easy and reliable function which requires only two external resistors, R11 and R9. Figure 7. System-level View of Gate Driver IRS20955 100 0.001 0.01 0.1 1 10 % 100m 200 200m 500m 1 2 5 10 20 50 100 Power (W) Self Osc. (ACD) Int. Clock @ 300 kHz Int. Clock @ 450 kHz Self Osc. (Single Channel Driven) R11 R9 |
Similar Part No. - IRAUDAMP4 |
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Similar Description - IRAUDAMP4 |
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