, this specific string of specifications is highly characteristic of a switching power supply module internal power adapter
If you’d like, I can:
If your environment is 50°C, your 1.1A fuse might trip at only 0.8A. Always check the thermal derating curve in the datasheet. 2. Voltage Spikes f4901 1.1a 24v schematic
A linear regulator dropping 48V to 24V at 1A would dissipate 24W (hot!). A switching regulator like the F4901 at 85% efficiency dissipates only ~4.6W. However, the PCB layout is critical. , this specific string of specifications is highly
High Voltage Input (48V max) ----+----[Input Cap]----+----[F4901 VIN Pin] | | +----[Startup Resistor]---+ | [Freewheeling Diode]---[SW Pin (F4901)] | +----[Inductor L1]-------> Output (+24V) | [Output Cap] ---+----[FB Resistor Divider] | GND Voltage Spikes A linear regulator dropping 48V to
Use a multimeter to check if the fuse is "open."
The F4901 1.1A 24V may also include features such as: