The data center specification requires a robust communication interface that works with the PMBus protocol.
“PMBus is an industry standard that defines a means of communication with power conversion devices. It is comprised of an industry standard SMBus serial interface and the PMBus command language.”
As a PMBus-compliant device, the LTC2971 PSM integrates seamlessly with existing system-management platforms. Its status monitoring and control functions are fully accessible through standard PMBus commands, It also works with LTpowerPlay®, which makes setup much easier.
This allows designers to define register settings, such as voltage rails, limits, and sequencing, offline and program them directly into the EEPROM, which helps reduce development time.
The device also has a bidirectional FAULTB pin, which allows enables flexible fault management by allowing multiple devices to share or isolate fault lines as needed. Overall, control capabilities —such as servo trimming, sequencing, and fault handling—make power‑management design much easier and more flexible compared to older analog‑only solutions.
Applicable Part Numbers
| DigiKey Part Number | Manufacturer Part Number |
|---|---|
| 161-LTC2971HY#PBF-ND | LTC2971HY#PBF |
| 161-LTC2971IY#PBF-ND | LTC2971IY#PBF |
| 161-LTC2971CY#PBF-ND | LTC2971CY#PBF |
| 161-LTC2971CY-2#PBF-ND | LTC2971CY-2#PBF |
| 161-LTC2971CY-3#PBF-ND | LTC2971CY-3#PBF |
| 161-LTC2971CY-1#PBF-ND | LTC2971CY-1#PBF |
| 505-LTC2971IY-1#PBF-ND | LTC2971IY-1#PBF |
| 505-LTC2971IY-2#PBF-ND | LTC2971IY-2#PBF |
| 161-LTC2971IY-3#PBF-ND | LTC2971IY-3#PBF |
| 505-LTC2971HY-1#PBF-ND | LTC2971HY-1#PBF |
| 161-LTC2971HY-2#PBF-ND | LTC2971HY-2#PBF |
| 161-LTC2971HY-3#PBF-ND | LTC2971HY-3#PBF |
| 175-MAX17651AZT+TTR-ND,175-MAX17651AZT+TCT-ND,175-MAX17651AZT+TDKR-ND | MAX17651AZT+T |
| 505-MAX17651ATT±ND | MAX17651ATT+ |
| 175-MAX17651AZT+TCPCTR-ND,175-MAX17651AZT+TCPCCT-ND,175-MAX17651AZT+TCPCDKR-ND | MAX17651AZT+TCPC |
| 505-MAX17651ATT+TTR-ND | MAX17651ATT+T |
| MAX17651AZT±ND | MAX17651AZT+ |
Related Article:
LTC2971 Fault Logging Explained: How System Data is Auto‑Saved
How does the PSM handle power sequencing and multirail coordination?
How does the LTC2971 ensure high‑precision telemetry in power systems?
How does the LTC2971 support DPSM (Digital Power System Management) features?
Why is a digital power system manager (PSM) needed in modern data center?