We are working on an LED dimmer circuit which supports DALI2.0 Interface. We already received the hardware and working on software only. LED driver circuit is based TPS92515HV and below is the circuitry
But the issue is LED is not switching off even if the control signal which is Iadj is 0. We tried shorting Iadj to GND and still, there is a current of 3.5mA through LED which makes LED on always unless power is removed. This will lead to non-complinace of DALI OFF command. The board is powered externally and we cannot control it and also we cannot afford any major component addition like relays to control power line to the driver chip. Is there anything to do with TPS92515HV configuration.??