A key advantage of the PSM is its robust, integrated fault management and event logging.
The LTC2971 provides comprehensive fault detection and response. When the voltage or temperature goes beyond the range, the system can be configured to trigger latching shutdown and automatic restart, or powering down in a controlled way.
Importantly, the device continuously buffers (saves) status and telemetry in its RAM and if any fault occurs, it automatically commits and saves this data to nonvolatile EEPROM. This black-box functionality preserves a complete snapshot of voltages, currents, and temperatures at the moment of failure, enabling precise root-cause analysis.
As illustrated in the LTC2971’s data sheet’s conceptual diagram (Figure 21), the circular memory buffer automatically transfers to EEPROM when a fault occurs. Unlike basic PMBus fault flags or external watchdogs that only tell you something went wrong, the PSM records the full operating state rather than just flagging errors.
These advanced features strengthen QB solution reliability, support detailed lifecycle assessment, and extend the life of the product through continuous monitoring and data logging. See Figure 1.
Related Article:
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?
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+ |