Rainbow-electronics MAX34441 Manuel d'utilisateur

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PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444110

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444111 Pin

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444112

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444113 Multiple Device Co

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444114Table 1. PMBus Command Codes Detailed DescriptionThe

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444115Table 1. PMBus Command Codes (continued)Note 1: Common commands are shad

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444116Address SelectOn device power-up, the device samples the A0 and A1 pins t

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444117Group CommandThe device supports the group command. With the group

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444118Host Sends or Reads Too Few BitsIf for any reason the host does not compl

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444119Host Reads from a Write-Only CommandWhen a read request is issued t

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX344412TABLE OF CONTENTSAbsolute Maximum Ratings . . . . . . . . . . . . . . . .

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444120Interpreting Received DIRECT Format ValuesThe host system uses the follow

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444121The following example demonstrates how the host can send and retri

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444122particular fault. Table 5 illustrates the required con-ditions and fault

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444123Table 7. Fan Control Operation ModesNote: The RPM modes should only be us

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444124Figure 2. Fan Speed ExampleOne or all of the six available temperature se

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444125Figure 3. Fan Spin-UpFan Spin-UpFigure 3 shows the fan spin-up process. W

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444126

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444127Table 9. OPERATION Command Byte (When Bit 3 of ON_OFF_CONFIG = 1)Table 10

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444128ON_OFF_CONFIG (02h)The ON_OFF_CONFIG command configures the combination o

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444129STORE_DEFAULT_ALL (11h)The STORE_DEFAULT_ALL command instructs the devi

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX344413TABLE OF CONTENTS (continued)Fan Control Operation . . . . . . . . . . .

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444130VOUT_MARGIN_LOW (26h)The VOUT_MARGIN_LOW command loads the device w

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444131FAN_CONFIG_1_2 (3Ah)The FAN_CONFIG_1_2 command is used in conjuncti

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444132VOUT_OV_FAULT_LIMIT (40h)The VOUT_OV_FAULT_LIMIT command sets the value o

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444133IOUT_OC_WARN_LIMIT (46h)The IOUT_OC_WARN_LIMIT command sets the value of

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444134OT_WARN_LIMIT (51h)The OT_WARN_LIMIT command sets the temperature, in deg

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444135TON_DELAY (60h)TON_DELAY sets the time, in milliseconds, from when a STAR

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444136STATUS_WORD (79h)The STATUS_WORD command returns 2 bytes of information w

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444137STATUS_MFR_SPECIFIC (80h)The STATUS_MFR_SPECIFIC command returns 1 byt

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444138READ_FAN_SPEED_1 (90h)The READ_FAN_SPEED_1 command returns the fan speed

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444139MFR_MODE (D1h)The MFR_MODE command is used to configure the device to sup

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX344414TABLE OF CONTENTS (continued)STATUS_MFR_SPECIFIC (80h) . . . . . . . . .

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444140MFR_VOUT_PEAK (D4h)The MFR_VOUT_PEAK command returns the maximum actual m

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444141MFR_FAULT_RETRY (DAh)The MFR_FAULT_RETRY command sets the delay time betw

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444142If an error occurs while the device is attempting to write or clear the N

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444143Table 29. MFR_NV_FAULT_LOG (continued)Note: LOG_VALID is set to DDh if th

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444144MFR_TIME_COUNT (DDh)The MFR_TIME_COUNT command returns the number of seco

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444145MFR_TEMP_SENSOR_CONFIG (F0h)The MFR_TEMP_SENSOR_CONFIG command is used to

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444146MFR_FAN_CONFIG (F1h)The MFR_FAN_CONFIG command is used with FAN_CONFIG_

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444147Table 32. MFR_FAN_CONFIG (continued)Note: It is recommended that the fan

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444148MFR_FAN_LUT (F2h)The MFR_FAN_LUT command is used to configure the LUT tha

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444149Figure 6. Fan Lookup Table (LUT) FormatFAN SPEED STEP: Fan PWM Duty Cycle

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX344415LIST OF TABLESTable 1. PMBus Command Codes. . . . . . . . . . . . . . . .

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444150MFR_READ_FAN_PWM (F3h)The MFR_READ_FAN_PWM command returns the lates

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444151 Applications InformationPower-Supply DecouplingTo achiev

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX3444152

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX34441Maxim cannot assume responsibility for use of any circuitry other than circ

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX344416Stresses beyond those listed under “Absolute Maximum Ratings” may cause p

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX344417DC ELECTRICAL CHARACTERISTICS (continued)(VDD = 2.7V to 5.5V, TA = -40NC t

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX344418I2C/SMBus INTERFACE ELECTRICAL SPECIFICATIONS(VDD = 2.7V to 5.5V, TA = -40

PMBus 5-Channel Power-Supply Manager and Intelligent Fan ControllerMAX344419 Typical Operatin