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Evaluates: MAX14922

MAX14922 Evaluation Kit

Current Limit Autoretry Timing

The MAX14922 EV kit comes with a default 1nF C8

capacitor connected to the tBLANK input that determines

the blanking and autoretry timing in case of an overcur-

rent scenario. A 1nF capacitor provides 33μs of current

limit time (tON_CL) and 9ms of off time (tOFF_CL) based

on a short-circuit of the S pin to GND and a VDD supply

voltage of +24V. After 9ms, the device autoretries turning

on the external FET. For more information regarding cur-

rent limit and autoretry timing, refer to the IC data sheet.

The EV kit features a 12mΩ sense resistor at R1, which

sets the current limit threshold to 2.5A. Current limiting is

enabled when the load current is more than the threshold.

Working with Different Supply Inputs

The MAX14922 EV kit comes with a default supply clamps

to handle up to +60V supply input at VDD. Although when

working with standard +24V supply providing power to

VDD of the EV kit, the current components can still be

used for evaluation. Replacing D5 with SM30T35CAY

and D1 with SBMJ33A changes the protection parameters

necessary for a +24V supply environment evaluation.

#Denotes an RoHS-compliant part.

PART

TYPE

MAX14922EVKIT#

EV Kit

Ordering Information

MAX14922 Datasheet(PDF) 4 Page - Maxim Integrated Products