DRV110

I'm currently using the DRV110 to drive a 12V Relay (OMRON G5LE). The same 12V power supply powers both the Relay and the DRV110. The MOSFET I'm using is the BSS138BKS.

Here are my external setting: 

Rsense= 2 ohm

Rpeak= 1M ohm (so the peak current should be 30mA)

Rhold= 333K ohm (so the hold current should be15mA)

Rosc= 47K ohm   (so the PWM frequency should be 60KHz)

Ckeep = 1uF (Thold 100ms)

Attached is the voltage signal measured at the coil of the relay. The PWM signal frequency is around 7 KHz instead of 60KHz and the signal doesn't look like a clean square wave. Am I doing something wrong?

Thank you ,

Salvo