LMR14203: Input-output voltage difference of LMR14203

Hi,

The maximum duty cycle in the datasheet is specified as typ87%, min81%. And you can refer to below Duty Cycle equation to get the relationship between Vin/Vo and Io.

Regards,

Hongjia

Thanks for your reply.

I would like to confirm each parameter above.

Above circuit as an example,

Vo : VOUT    Vin : VIN   Io : IOUT(Output current of the circuit)

RonHS : Resistance value of the high-side switch inside the LMR14203

RonLS : Zero? There is no ow-side switch inside the LMR14203.

DCR , D : Please tell me what these refer to.

If you know any documentation to refer to please let me know.

Hi,

For the non-sync buck, the denominator of the equation I shared earlier should be Vin-Io*Ron_HS+VD_diode. 

VD_diode means the voltage drop on the diode when the diode is conducting. 

DCR is the DC resistance of the inductor.

D is the duty cycle of the circuit.

Hongjia