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L6564T データシート(PDF) 8 Page - STMicroelectronics |
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L6564T データシート(HTML) 8 Page - STMicroelectronics |
8 / 33 page Pin connection L6564T 8/33 Doc ID 022671 Rev 1 6PFC_OK PFC pre-regulator output voltage monitoring/disable function. This pin senses the output voltage of the PFC pre-regulator through a resistor divider and is used for protection purposes. If the voltage on the pin exceeds 2.5 V the IC stops switching and restarts as the voltage on the pin falls below 2.4 V. However, if at the same time the voltage of the INV pin falls below 1.66 V, a feedback failure is assumed. In this case the device is latched off. Normal operation can be resumed only by cycling Vcc. bringing its value lower than 6 V before moving up to the turn-on threshold. If the voltage on this pin is brought below 0.23 V the IC is shut down. To restart the IC the voltage on the pin must go above 0.27 V. This can be used as a remote on/off control input. 7ZCD Boost inductor’s demagnetization sensing input for transition-mode operation. A negative-going edge triggers MOSFET’s turn-on. 8 GND Ground. Current return for both the signal part of the IC and the gate driver. 9GD Gate driver output. The totem pole output stage is able to drive power MOSFET’s and IGBT’s with a peak current of 600 mA source and 800 mA sink. The high-level voltage of this pin is clamped at about 12 V to avoid excessive gate voltages. 10 Vcc Supply voltage of both the signal part of the IC and the gate driver. Sometimes a small bypass capacitor (0.1 µF typ.) to GND might be useful to get a clean bias voltage for the signal part of the IC. Table 3. Pin description (continued) n° Name Function |
同様の部品番号 - L6564T |
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同様の説明 - L6564T |
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