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HCPL-0302 数据表(PDF) 11 Page - AVAGO TECHNOLOGIES LIMITED |
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HCPL-0302 数据表(HTML) 11 Page - AVAGO TECHNOLOGIES LIMITED |
11 / 15 page 11 Applications Information Eliminating Negative IGBT Gate Drive To keep the IGBT firmly off, the HCPL-3020 and HCPL- 0302 have a very low maximum VOL specification of 1.0 V. Minimizing Rg and the lead inductance from the HCPL-3020 or HCPL-0302 to the IGBT gate and emitter (possibly by mounting the HCPL-3020 or HCPL-0302 on a small PC board directly above the IGBT) can eliminate the need for negative IGBT gate drive in many applications as shown in Figure 17. Care should be taken with such a PC board design to avoid routing the IGBT collector or emit- ter traces close to the HCPL-3020 or HCPL-0302 input as this can result in unwanted coupling of transient signals into the input of HCPL-3020 or HCPL-0302 and degrade performance. (If the IGBT drain must be routed near the HCPL-3020 or HCPL-0302 input, then the LED should be reversebiasedwhenintheoffstate,topreventthetransient signals coupled from the IGBT drain from turning on the HCPL-3020 or HCPL-0302. Figure 17. Recommended LED drive and application circuit for HCPL-3020 and HCPL-0302. + HVDC 3-PHASE AC - HVDC 0.1 µF VCC = 15 V 1 3 + – 2 4 8 6 7 5 HCPL-3020/0302 Rg Q1 Q2 270 Ω +5 V CONTROL INPUT 74XXX OPEN COLLECTOR |
类似零件编号 - HCPL-0302 |
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类似说明 - HCPL-0302 |
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