9
Minimizing EM emissions
This evaluation board has been designed to reach a fair compromise between efficiency performance and
conducted EM emissions compliance from 150 kHz to 108 MHz.
Nevertheless, if the minimum EM emission is required, the following actions should be considered:
1.
Choose a higher value for the capacitor C25 (for example 2.2 nF)
2.
Include the whole EMI filter by removing bridges from the jumpers X1, X14, and X16
3.
Replace the 10 Ω resistor R8 with a higher value such as 22 Ω or 33 Ω
4.
Replace the main inductor L6 with a shielded one (for example Cyntec VCHE106G-470MS6) and connect
the shield to ground
5.
Connect the CHASSIS terminal with a short piece of wire as close as possible to the test ground plane
where the board is placed
Voltage-mode boost to ground evaluation kit
TLD5098EP
9 Minimizing EM emissions
User Manual
12
2020-09-17
