NXP,
I'm working on a design using the PN7150 and I'm having a problem where some of my PN7150s seemingly don't enter Stand-By mode.
So far, I've narrowed down the issue to correlating with the software revision of the PN7150.
I have 2 OM5578 dev boards, one that was populated with PN7150B0HN/C11002, and a second OM5578 where I replaced the PN7150 with a PN7150B0HN/C11006. The OM5578 with the PN7150B0HN/C11002 briefly draws ~5 mA when the enable pin is held high, then returns to ~20 uA. However, the OM5578 with the PN7150B0HN/C11006, draws ~5 mA continuously when the enable pin is held high. The power profile of the OM5578 with PN7150B0HN/C11002 behaves as expected, where the current returns to ~20uA in between RF transmissions in discovery mode, but one with the PN7150B0HN/C11006 only ever drops to ~5mA.
The host controllers for both OM5578 are running the exact same firmware, based of the MCUXpresso example code. I've ensured CORE_SET_POWER_MODE_CMD is set to 0x01 (Standby Mode Enabled) in the host controller firmware.
Are there any other settings required to enter standby mode on PN7150B0HN/C11006 parts? Do you have any ideas what could be causing the PN7150 to continuously draw 5mA?
Appreciate any help.
-Daniel
