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LTC3889 Datasheet(PDF) 92 Page - Analog Devices |
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LTC3889 Datasheet(HTML) 92 Page - Analog Devices |
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92 / 118 page  LTC3888/LTC3888-1/ LTC3888-2 92 Rev. B For more information www.analog.com OUTPUT CURRENT AND LIMITS COMMAND NAME CMD CODE DESCRIPTION TYPE PAGED DATA FORMAT UNITS NVM DEFAULT VALUE IOUT_CAL_GAIN 0x38 Ratio of ISENSE voltage to sensed current. R/W Word Y L11 mΩ l 5mΩ 0xCA80 MFR_LOAD_EMULATION 0xF7 Load step emulation control. R/W Byte Y Reg 0x00 IOUT_OC_FAULT_LIMIT 0x46 Per phase output overcurrent fault limit. R/W Word Y L11 A l 29.75A 0xDBB8 IOUT_OC_WARN_LIMIT 0x4A Per phase output overcurrent warning limit. R/W Word Y L11 A l 20.0A 0xDA80 Related commands: STATUS_IOUT, SMBALERT_MASK, READ_IOUT, MFR_IOUT_PEAK, MFR_TOTAL_IOUT, MFR_READ_ALL_IOUT,IOUT_OC_FAULT_RESPONSE IOUT_CAL_GAIN The IOUT_CAL_GAIN command is used to set the power stage output current monitor gain at ISENSE in milliohms. If both master channels are not commanded off by their RUN pin or OPERATION command when IOUT_CAL_GAIN is sent to either page, the LTC3888-1 will assert a CML fault. This command has two data bytes in Linear_5s_11s format. PMBus COMMAND DETAILS (Output Current and Limits) MFR_LOAD_EMULATION The MFR_LOAD_EMULATION command is used to control load step emulation for all phases on each master channel. MFR_LOAD_EMULATION BIT MEANING 7 (Reserved) 6 (Reserved) 5 (Reserved) 4 (Reserved) 3 Enable Load Step Emulation (LSE) Event Scope Trigger on PGOOD (negative edge) 2 LSE Mode Control: 0: Non-pulsed: LSE state statically follows data written to bits[1:0}. 1: Pulsed: Writing any non-zero state to bits [1:0] produces an LSE pulse of the specified magnitude with a width of ~ 100µs. [1:0] Value Load Step Emulated at IOUT_CAL_GAIN = 5mΩ 11b 30A/Phase 10b 20A/Phase 01b 10A/Phase 00b Off This command has one data byte. |
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