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FDMF5822DC Datasheet(PDF) 3 Page - Fairchild Semiconductor |
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FDMF5822DC Datasheet(HTML) 3 Page - Fairchild Semiconductor |
3 / 25 page © 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com FDMF5822DC • Rev. 1.0.1 3 Pin Configuration Figure 3. Pin Configuration - Top View and Transparent View Pin Definitions Pin # Name Description 1 PWM PWM input to the gate driver IC 2 ZCD# Enable input for the ZCD (Auto DCM) comparator 3 VCC Power supply input for all analog control functions; this is the “quiet” VCC 4, 32 AGND Analog ground for analog portions of the IC and for substrate 5 BOOT Supply for the high-side MOSFET gate driver. A capacitor from BOOT to PHASE supplies the charge to turn on the N-channel high-side MOSFET 6 NC No connect 7 PHASE Return connection for the boot capacitor, internally tied to SW node 8~11 VIN Power input for the power stage 12~15, 28 PGND Power return for the power stage 16~26 SW Switching node junction between high-side and low-side MOSFETs; also input to the gate driver SW node comparator and input into the ZCD comparator 27, 33 GL Gate Low, Low-side MOSFET gate monitor 29 PVCC Power supply input for LS (1) gate driver and boot diode 30 THWN# 125°C Thermal Warning Flag – pulls LOW upon detection of 125°C thermal warning pre- set temperature 31 EN / FAULT# Dual-functionality, enable input to the gate driver IC. FAULT# - internal pull-down physically pulls this pin LOW upon detection of fault condition (HS (2) MOSFET short or 150°C THDN) Notes: 1. LS = Low Side. 2. HS = High Side. |
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