ZHCSD73D August 2012 – August 2018 LMZ21700
PRODUCTION DATA.
The input capacitor, the VIN terminal, and the GND terminal of the LMZ21700 form a high di/dt loop. Place the input capacitor as close as possible to the VIN and GND terminals of the module IC. This minimizes the area of the high di/dt loop and results in lower inductance in the switching current path. Lower inductance in the switching current path translates to lower voltage spikes on the internal switch node and lower noise on the output voltage. Make the copper traces between the input capacitor and the VIN and GND terminals wide and short for better current handling and minimized parasitic inductance.