The MAX20029 is a peak current mode control device. The OUTS pin is the feedback pin that feeds into comparator against Vref. It connects the feedback select block, which is a network of resistor dividers…
When overcurrent is asserted, the PMOS is switched off and NMOS is switched on.
The low-side NMOS current limit threshold is 1.26A for the 1A version and 1.62A for the 1.5A version, prior to switching…
On the 1.5A rail (2.2A ILIM) there is a 3.3A saturation current inductor. Would an estimate of headroom not be sufficient?
Yes, a headroom estimation would be good, but it comes at the cost of the size…
