Description:The MJW10 series is a range of cost-optimized 10W isolated DC-DC converter within an encapsulated 1"x1" industrial standard package. The MJW10 series come in a shielded metal package and conducted EMI EN 55032 Class A approved without external components. By state-of-the-art circuit topology and 89% high efficiency could be achieved allowing an operating temperature of -40℃ to +80℃ as well as low standby power consumption.
The recommended PCB layout for optimal thermal performance involves placing the converter on a multi-layer PCB with a solid ground plane, using thermal vias to dissipate heat, and keeping the PCB area around the converter clear of components to ensure good airflow.
To ensure reliable start-up and shutdown, ensure that the input voltage rises and falls monotonically, and that the input voltage is within the specified range during start-up and shutdown. Additionally, add a soft-start circuit to limit the inrush current.
The derating curves for the converter's output power and efficiency at high temperatures can be obtained from the manufacturer or through testing. As a general guideline, the output power may need to be derated by 1-2% per degree Celsius above 50°C, and the efficiency may decrease by 0.5-1% per degree Celsius above 50°C.
To protect the converter from input voltage surges and spikes, add a TVS (Transient Voltage Suppressor) diode or a voltage clamp circuit at the input, and ensure that the input filter capacitors are rated for the maximum expected input voltage.
The recommended input and output capacitors for optimal performance are low-ESR ceramic or film capacitors with a voltage rating that exceeds the maximum input or output voltage. The capacitor values should be selected based on the converter's input and output ripple current requirements.
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MJW10-24S05 Overview
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