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LTM4686BEVPBF 数据表(PDF) 119 Page - Analog Devices |
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LTM4686BEVPBF 数据表(HTML) 119 Page - Analog Devices |
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119 / 130 page  LTM4686B 119 Rev. 0 For more information www.analog.com APPENDIX C: PMBUS COMMAND DETAILS MFR_IOUT_PEAK The MFR_IOUT_PEAK command reports the highest current, in amperes, reported by the READ_IOUT measurement. This command is cleared using the MFR_CLEAR_PEAKS command. This read-only command has two data bytes and is formatted in Linear_5s_11s format. MFR_ADC_CONTROL The MFR_ADC_CONTROL command determines the ADC read back selection. A default value of 0 in the command runs the standard telemetry loop with all parameters updated in a round robin fashion with a typical latency of 90ms. The user can command a non-zero value to monitored a single parameter with an approximate update rate of 8ms. This command has a latency of up to two ADC conversions or approximately 16ms (power stage temperature conversions may have a latency of up to three ADC conversion or approximately 24ms). Selecting a value of 0x0D will enable a short round robin loop. This commanded value runs a short telemetry loop only selecting VOUT0, IOUT0, VOUT1 and IOUT1 in a round robin manner. The round robin typical latency is 27ms. It is recommended the part remain in standard telemetry mode except for special cases where fast ADC updates of a single parameter is required. The part should be commanded to monitor the desired parameter for a limited period of time (say, less than a second) then set the command back to standard round robin mode. If this command is set to any value except standard round robin telemetry (0) all warnings and faults associated with telemetry other than the selected parameter are effectively disabled and voltage servoing is disabled. When round robin is reasserted, all warnings and faults and servo mode are re-enabled. COMMANDED VALUE TELEMETRY SELECTED 0x00 Standard ADC Round Robin Telemetry 0x01 SVIN 0x02 Reserved 0x03 Reserved 0x04 Internal IC Temperature 0x05 Channel 0 VOUT 0x06 Channel 0 IOUT 0x07 Reserved 0x08 Channel 0 Power Stage-Sensed Temperature 0x09 Channel 1 VOUT 0x0A Channel 1 IOUT 0x0B Reserved 0x0C Channel 1 Power Stage or TSNS1a-Sensed Temperature 0x0D ADC Short Round Robin 0x0E – 0xFF Reserved If a reserved command value is entered, the part will default to Internal IC Temperature and issue a CML[6] fault. CML[6] faults will continue to be issued by the LTM4686B until a valid command value is entered. This read/write command has 1 data byte and is formatted in register format. |
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