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MIC4607A-2 bảng dữ liệu(PDF) 21 Page - Microchip Technology

tên linh kiện MIC4607A-2
Giải thích chi tiết về linh kiện  85V, Three-Phase MOSFET Driver with Adaptive Dead-Time, Anti-Shoot-Through and Overcurrent Protection
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MIC4607A-2 bảng dữ liệu(HTML) 21 Page - Microchip Technology

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DS-20006957A-page 21
MIC4607A
5.7.2
DLY
A capacitor connected to the DLY pin determines the
amount of time the gate drive outputs are latched off
before they can be restarted.
During normal operation, the DLY pin is held low by an
internal MOSFET. After an overcurrent condition is
detected, the MOSFET turns off and the external
capacitor is charged up by an internal current source.
The outputs remain latched off until the DLY pin voltage
reaches the VDLY+ threshold (typically 1.5V).
The delay time can be approximately calculated using
Equation 5-1.
EQUATION 5-1:
5.7.3
FLT/
This open-drain output is pulled low while the gate drive
outputs are latched off after an over-current condition.
It will de-assert once the DLY pin has reached the
VDLY+ threshold and a rising edge occurs on any LI pin
(for the MIC4607A-1) or a falling edge on any PWM pin
(MIC4607A-2).
During normal operation, the internal pull-down MOS-
FET is of the pin is high impedance. A pull-up resistor
must be connected to this pin.
tDLY
CDLY VDLY-
IDLY
----------------------------------
=



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