I need to dim a LED module that uses a TPS92512DGQR but I can't use the built in pwm pin. I am only allowed power and ground lines to the device. The power signal will be PWMed at 100hz between 15% and 100% duty cycle. I have rigged this up and it seems to work but I would like some feed back on if this is acceptable or if it could cause long term damage to the device. Below is a simplified schematic.