TPS40428EVM-594: Overshoot on startup

Part Number:TPS40428EVM-594

Hello,

My customer is experiencing overshoot at startup on the Eval module  The output doesn't seem to be following VREF during startup. TON_RISE for VREF is 2.7msec, but the device is starting in less than 1msec with almost 100mV overshoot.  After startup, performance appears to function as desired. Is this a known issue? Is there a setting that needs to be changed?

Thanks,

Michael