I have a DC/DC converter using a LM2673S-5.0. Input is 24Vdc +/- 5% and it works in continuos mode for output currents above 380mA. The design was based on a webrench design. My application requests current from the 5V rail at diferent levels depending on the function in progress. At start-up is requests only 25 mA.
For low current levels, below 380mA the device enters a non continuos mode and this generates some unwanted EMI.
Can I change my design to get countinuos mode al lower currents ?
For info, the LM2673S-5.0 is using a 22uH inductor, a 120uF elco and a 4,7uF X7R input capacitor along with a 100n near the circuit pins.
Best regards,
Pedro Oliveira
Mezão Telecomunicações e Electrónica, Lda.