Rainbow-electronics MAX34440 Instrukcja Użytkownika

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_______________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
PMBus 6-Channel Power-Supply Manager
MAX34440
19-5527; Rev 0; 9/10
Ordering Information
General Description
The MAX34440 is a complex system monitor that can
manage up to six power supplies. The power-supply
manager monitors the power-supply output voltage and
constantly checks for user-programmable overvoltage
and undervoltage thresholds. It can also margin the
power-supply output voltage up or down to a user-
programmable level. The margining is performed in a
closed-loop arrangement whereby the device automati-
cally adjusts a pulse-width-modulated (PWM) output and
then measures the resultant output voltage. The power-
supply manager can also sequence the supplies in any
order at both power-up and power-down. With the addi-
tion of an external current-sense amplifier, the device
can also monitor currents.
Applications
Network Switches/Routers
Base Stations
Servers
Smart Grid Network Systems
Industrial Controls
Features
S 6 Channels of Power-Supply Management
Voltage Measurement/Monitoring
Differential 12-Bit 1% Accurate ADC
Min/Max Threshold Excursion Detection
Supports Current Monitoring with External
Current-Sense Amplifier
Automatic Closed-Loop Margining
Programmable Up and Down Sequencing
Power-Good Output
S Supports Up to Eight Temperature Sensors
Two Remote Diode Temperature Sensors
Five Local Temperature Sensors
One Internal Temperature Sensor
Fault Detection on All Temp Sensors
S PMBus™-Compliant Command Interface
S I
2
C/SMBus™-Compatible Serial Bus with Bus
Timeout Function
S On-Board Nonvolatile Fault Logging and Default
Configuration Setting
S No External Clocking Required
S +3.3V Supply Voltage
PMBus is a trademark of SMIF, Inc.
SMBus is a trademark of Intel Corp.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*EP = Exposed pad.
PART TEMP RANGE PIN-PACKAGE
MAX34440ETL+
-40NC to +85NC
40 TQFN-EP*
MAX34440ETL+T
-40NC to +85NC
40 TQFN-EP*
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, go to: www.maxim-ic.com/errata.
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Podsumowanie treści

Strona 1 - MAX34440

_______________________________________________________________ Maxim Integrated Products 1For pricing, delivery, and ordering information, pleas

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PMBus 6-Channel Power-Supply ManagerMAX3444010 Pin Descriptio

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PMBus 6-Channel Power-Supply ManagerMAX3444011 Pin Description (continued)PIN NAME

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PMBus 6-Channel Power-Supply ManagerMAX3444012 Block DiagramNot

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PMBus 6-Channel Power-Supply ManagerMAX3444013 Multiple Device Connection DiagramSDASCLRSTALERTA

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PMBus 6-Channel Power-Supply ManagerMAX3444014Table 1. PMBus Command Codes Detailed DescriptionThe MAX34440 is a highly inte

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PMBus 6-Channel Power-Supply ManagerMAX3444015Table 1. PMBus Command Codes (continued)Note 1: Common commands are shaded. Access through any page res

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PMBus 6-Channel Power-Supply ManagerMAX3444016Address SelectOn device power-up, the device samples the A0 and A1 pins to determine the PMBus/SMBus ser

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PMBus 6-Channel Power-Supply ManagerMAX3444017Group CommandThe device supports the group command. With the group command, a host can write

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PMBus 6-Channel Power-Supply ManagerMAX3444018Host Sends or Reads Too Few BitsIf for any reason the host does not complete writing a full byte or read

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PMBus 6-Channel Power-Supply ManagerMAX3444019Host Reads from a Write-Only CommandWhen a read request is issued to a write-only command (CLEA

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PMBus 6-Channel Power-Supply ManagerMAX344402TABLE OF CONTENTSAbsolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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PMBus 6-Channel Power-Supply ManagerMAX3444020Sending a DIRECT Format ValueTo send a value, the host must use the below equation to solve for Y:Y = (m

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PMBus 6-Channel Power-Supply ManagerMAX3444021Fault Management and ReportingFor reporting faults/warnings to the host on a real-time basis, the

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PMBus 6-Channel Power-Supply ManagerMAX3444022Temperature Sensor OperationThe device can monitor up to eight different temperature sensors, seven ex

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PMBus 6-Channel Power-Supply ManagerMAX3444023Table 7. Page Commands

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PMBus 6-Channel Power-Supply ManagerMAX3444024Table 8. OPERATION Command Byte (When Bit 3 of ON_OFF_CONFIG = 1)Table 9. OPERATION Command Byte (When B

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PMBus 6-Channel Power-Supply ManagerMAX3444025ON_OFF_CONFIG (02h)The ON_OFF_CONFIG command configures the combination of CONTROL input and PMBus OPERA

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PMBus 6-Channel Power-Supply ManagerMAX3444026STORE_DEFAULT_ALL (11h)The STORE_DEFAULT_ALL command instructs the device to transfer the device configu

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PMBus 6-Channel Power-Supply ManagerMAX3444027VOUT_MARGIN_LOW (26h)The VOUT_MARGIN_LOW command loads the device with the voltage to which t

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PMBus 6-Channel Power-Supply ManagerMAX3444028VOUT_OV_FAULT_LIMIT (40h)The VOUT_OV_FAULT_LIMIT command sets the value of the output voltage that cause

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PMBus 6-Channel Power-Supply ManagerMAX3444029IOUT_OC_WARN_LIMIT (46h)The IOUT_OC_WARN_LIMIT command sets the value of the current that causes an over

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PMBus 6-Channel Power-Supply ManagerMAX344403TABLE OF CONTENTS (continued)PMBus Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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PMBus 6-Channel Power-Supply ManagerMAX3444030OT_WARN_LIMIT (51h)The OT_WARN_LIMIT command sets the temperature, in degrees Celsius, of the selected t

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PMBus 6-Channel Power-Supply ManagerMAX3444031POWER_GOOD_OFF (5Fh)The POWER_GOOD_OFF command sets the value of the output voltage that causes the PG o

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PMBus 6-Channel Power-Supply ManagerMAX3444032Table 16. STATUS_BYTESTATUS_BYTE (78h)The STATUS_BYTE command returns 1 byte of information with a summa

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PMBus 6-Channel Power-Supply ManagerMAX3444033STATUS_VOUT (7Ah)The STATUS_VOUT command returns 1 byte of information with contents as described in Tab

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PMBus 6-Channel Power-Supply ManagerMAX3444034READ_VOUT (8Bh)The READ_VOUT command returns the actual measured (not commanded) output voltage. READ_VO

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PMBus 6-Channel Power-Supply ManagerMAX3444035MFR_MODE (D1h)The MFR_MODE command is used to configure the device to support manufacturer specific comm

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PMBus 6-Channel Power-Supply ManagerMAX3444036MFR_VOUT_PEAK (D4h)The MFR_VOUT_PEAK command returns the maximum actual measured output voltage. To rese

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PMBus 6-Channel Power-Supply ManagerMAX3444037MFR_FAULT_RETRY (DAh)The MFR_FAULT_RETRY command sets the delay time between a power supply being shut d

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PMBus 6-Channel Power-Supply ManagerMAX3444038If an error occurs while the device is attempting to write or clear the NV_FAULT_LOG, the device sets th

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PMBus 6-Channel Power-Supply ManagerMAX3444039Table 24. MFR_NV_FAULT_LOG (continued)Note: LOG_VALID is set to DDh if the fault log contains valid data

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PMBus 6-Channel Power-Supply ManagerMAX344404TABLE OF CONTENTS (continued)MFR_MODEL (9Ah) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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PMBus 6-Channel Power-Supply ManagerMAX3444040MFR_TIME_COUNT (DDh)The MFR_TIME_COUNT command returns the number of seconds the device has been operati

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PMBus 6-Channel Power-Supply ManagerMAX3444041MFR_TEMP_SENSOR_CONFIG (F0h)The MFR_TEMP_SENSOR_CONFIG command is used to configure the temperature sens

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PMBus 6-Channel Power-Supply ManagerMAX3444042 Package InformationFor th

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PMBus 6-Channel Power-Supply ManagerMAX34440Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Ma

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PMBus 6-Channel Power-Supply ManagerMAX344405LIST OF TABLESTable 1. PMBus Command Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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PMBus 6-Channel Power-Supply ManagerMAX344406Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device

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PMBus 6-Channel Power-Supply ManagerMAX344407DC ELECTRICAL CHARACTERISTICS (continued)(VDD = 2.7V to 5.5V, TA = -40NC to +85NC, unless otherwise noted

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PMBus 6-Channel Power-Supply ManagerMAX344408I2C/SMBus INTERFACE ELECTRICAL SPECIFICATIONS(VDD = 2.7V to 5.5V, TA = -40NC to +85NC, unless otherwise n

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PMBus 6-Channel Power-Supply ManagerMAX344409 Typical Operating Characteristics(TA = +25°C, u

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