전자부품 데이터시트 검색엔진 |
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L6566B 데이터시트(PDF) 8 Page - STMicroelectronics |
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L6566B 데이터시트(HTML) 8 Page - STMicroelectronics |
8 / 51 page Pin settings L6566B 8/51 2 Pin settings 2.1 Connections Figure 3. Pin connection (through top view) 2.2 Pin description N.C. GND GD Vcc FMOD DIS VFF SS OSC MODE/SC COMP CS VREF HVS AC_OK ZCD 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Table 1. Pin functions N° Pin Function 1HVS High-voltage start-up. The pin, able to withstand 700 V, is to be tied directly to the rectified mains voltage. A 1 mA internal current source charges the capacitor connected between Vcc pin (5) and GND pin (3) until the voltage on the Vcc pin reaches the turn-on threshold, then it is shut down. Normally, the generator is re- enabled when the Vcc voltage falls below 5 V to ensure a low power throughput during short circuit. Otherwise, when a latched protection is tripped the generator is re-enabled 0.5 V below the turn-on threshold, to keep the latch supplied; or, when the IC is turned off by pin COMP (9) pulled low the generator is active just below the UVLO threshold to allow a faster restart. 2N.C. Not internally connected. Provision for clearance on the PCB to meet safety requirements. 3GND Ground. Current return for both the signal part of the IC and the gate drive. All of the ground connections of the bias components should be tied to a track going to this pin and kept separate from any pulsed current return. 4GD Gate driver output. The totem pole output stage is able to drive power MOSFET’s and IGBT’s with a peak current capability of 800 mA source/sink. |
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