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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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PFS7628C Datenblatt(PDF) 11 Page - Power Integrations, Inc. |
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PFS7628C Datenblatt(HTML) 11 Page - Power Integrations, Inc. |
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11 / 38 page  Rev. F 08/20 11 PFS7x23-7x29/7633-7636 www.power.com Open FEEDBACK Pin Protection The FEEDBACK pin continuously sinks a static current of I FBPD [VCC >VCC UVLO+] to protect against a fault related to an open FEEDBACK pin or incomplete feedback divider network. The internal current sink introduces a small static offset to the output regulation which can be accounted for in selecting the output feedback regulation components (FEEDBACK pin divider). Hysteretic Thermal Shutdown The thermal shutdown circuit senses the controller die temperature which is well coupled to the heat sink through the exposed, grounded pad. The threshold is set at 117 °C typical with a 36 °C hysteresis. When the controller die temperature rises above this threshold (OTP), the controller initiates a soft-shutdown and remains disabled until the controller die temperature falls by ~36 °C, at which point the device will re-initiate the start-up sequence. The maximum time delay for soft-shutdown to occur after an OTP event is detected is t OTP beyond the next zero-crossing. HiperPFS-4 Additional Features and Changes HiperPFS-4 (eSIP) maintains similar pin-out as HiperPFS-3. • The breakdown voltage rating of the PFC MOSFET and diode has been increased to 600 V. • PFC output voltage can be designed for up to 440 VDC output to allow operation with 277 VAC line voltage. |
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