BMR350 2102/002 (Flex): paralleling and pin 13 question

Power
1

Hello,

We have a question about using the Flex BMR350 2102/002 (DLS variant) in parallel on a shared 12 V output. Could you please help with the following?

  1. Pin 13 / IMON. The 2102/002 technical specification lists pin 13 as SA0 (PMBus Address 0). The paralleling section also says “All the IMON (Pin 13) pins of the paralleled modules need to be tied together.” That sentence matches the ACS variants (e.g. x250/831), where pin 13 is IMON. For the 2102/002, does that requirement apply, or does droop load share need no connection between modules? Which pin is IMON on this variant as thee datasheet shows pin 13 is SA0.
  2. SA0 addressing. The spec gives a table for SA1 but not for SA0. On each module I have SA0 tied to DGND through 0 Ω, and SA1 set with 15k, 21k and 28k (1%). Can you confirm these give addresses 0x61, 0x62 and 0x63? The datasheet has no indication of what to do with SA0.

Operating conditions: 48 V input, about 25 A input (about 1,150 W output total), 12 V output.

Thank you,
Marcus

2

Fair questions-I’ll reach out to the supplier for clarification.