Texas Instruments provides a recommended PCB layout in the TPS23841PJD evaluation module (EVM) user's guide, which includes guidelines for component placement, routing, and thermal management. Following this layout can help minimize noise, reduce electromagnetic interference (EMI), and ensure reliable operation.
The input capacitor selection depends on the input voltage, current, and frequency. A general guideline is to choose a capacitor with a voltage rating at least 1.5 times the maximum input voltage, and a capacitance value between 1 μF and 10 μF. Additionally, consider the capacitor's equivalent series resistance (ESR) and ensure it is compatible with the TPS23841PJD's input impedance.
The TPS23841PJD can support cable lengths up to 100 meters, as specified in the IEEE 802.3af standard for Power over Ethernet (PoE). However, the actual cable length may be limited by the cable's quality, gauge, and environmental factors. It's essential to follow proper cable installation and testing guidelines to ensure reliable operation.
Yes, the TPS23841PJD can be used for non-PoE applications, but it's essential to ensure the device is properly configured and meets the specific requirements of the application. The TPS23841PJD's features, such as its high-power density and low standby power, make it suitable for a wide range of power supply applications.
The TPS23841PJD has a built-in overcurrent protection feature that can be enabled by connecting the OCP pin to a resistor and capacitor network. The OCP threshold can be set by selecting the appropriate resistor value. Additionally, the device has a programmable overcurrent limit, which can be set using the I2C interface.
TPS23841PJD datasheet
by Texas Instruments
