Schematic Symbol for NCP1345: The NCP1345, manufactured by onsemi,...

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how do i connect fault pin

engineergeorge

@copilot how do i connect fault pin

copilot

The connection of the Fault pin depends on the specific requirements and usage scenario of your power converter design. Assuming you want to monitor fault conditions and possibly take some action when a fault is detected, here are some typical connections you could consider:

LED Indication: Connect the Fault pin to an LED indicator to visually signal a fault condition.
- Connect Fault:1 to a series resistor (let's call it $R1$ ).
- Connect the other end of $R1$ to the anode of an LED (let's call it $D1$ ).
- Connect the cathode of $D1$ to GND:5.
Connections:
- Connect Fault:1 to R1:1.
- Connect R1:2 to D1:1.
- Connect D1:2 to GND:5.
Microcontroller Input: Connect the Fault pin to a microcontroller's GPIO pin to enable software handling of fault conditions.
- Connect Fault:1 to a suitable GPIO pin of the microcontroller (let's call it $MCU\_PIN$ ) with or without a pull-up/pull-down resistor depending on the logic requirements.
Connections:
- Connect Fault:1 to MCU_PIN.
External Interrupt: If the Fault pin is used as an interrupt signal to notify surrounding circuits:
- Connect Fault:1 to an interrupt input of a microcontroller or another system.
Connections:
- Connect Fault:1 to the interrupt pin of the microcontroller.
Combination: You can combine visual indication and microcontroller input for enhanced fault handling capabilities.
- Follow both LED indication and Microcontroller input connection steps.

The specific approach will depend on your fault handling requirements and circuit design preferences. If you can provide more details about what you want to do with the fault signal, I can give more precise recommendations.

engineergeorge

how do i connect fault pin

Fault

VCCH

DRV

ZCD/OPP

GND

VCCL

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