Morningstar TrakStar™ technology is used to follow the maximum power voltage of the solar array as it shifts due to changing environmental conditions. This technology allows the solar array to constantly operate at its most efficient output voltage, thereby providing the maximum amount of charging power to the batteries. This method of regulation can be significantly more efficient than standard PWM type regulation.

Traditional PWM vs Morningstar’s TrakStar™ MPPT Technology

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TriStar MPPT Processor A Firmware Update

v32b Firmware and above addresses EEprom access bugfix causing watchdog trip and subsequent lowside FET turn on.  This issue is generally limited to Controllers installed in applications utilizing all, or most, of the following items in the design.  -High I/O of Communications, -Read/Write of vb_ref register (0x0033), -Read/Write of ib_ref register (0x0058), -Write of battery current limit (0xE01D), -Coil command restart of controller, -48V Systems, -Oversized Arrays.  The following link provides instructions on updating firmware:   https://www.youtube.com/watch?v=J6Duwr5Tl-w&t=10s

 

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