MAX34446EVKIT# Maxim Integrated, MAX34446EVKIT# Datasheet
MAX34446EVKIT#
Specifications of MAX34446EVKIT#
Related parts for MAX34446EVKIT#
MAX34446EVKIT# Summary of contents
Page 1
... PMBus is a trademark of SMIF, Inc. For related parts and recommended products to use with this part, refer to: For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. PMBus Power-Supply Data Logger S Voltage, Current, and Temperature Measurement ...
Page 2
... Brownout Voltage Brownout Hysteresis Internal System Clock System Clock Error (Note 3) Output Logic-Low Output Logic-High Pullup Current Maxim Integrated PMBus Power-Supply Data Logger Operating Temperature Range ........................ -40NC to +105NC Storage Temperature Range ............................ -55NC to +125NC Lead Temperature (soldering, 10s) ................................+300NC + 0.3V)* Soldering Temperature (reflow) ......................................+260NC ...
Page 3
... Store Default All Time Nonvolatile Log Write Time Nonvolatile Log Delete Time Nonvolatile Log Overwrite Time Flash Endurance Data Retention Current or Voltage Sample Rate Temperature Sample Rate Device Startup Time Maxim Integrated PMBus Power-Supply Data Logger SYMBOL CONDITIONS = +25NC -40NC to +105NC ...
Page 4
... Note 2: This does not include pin input/output currents. Note 3: Guaranteed by design; not production tested. Note 4: ADC has no missing codes. SDA t BUF t LOW SCL t t HD:STA STOP START NOTE: TIMING IS REFERENCED TO V AND V IL(MAX) Maxim Integrated PMBus Power-Supply Data Logger SYMBOL CONDITIONS f SCL t BUF t HD:STA t LOW t HIGH Receive t HD:DAT ...
Page 5
... TEMPERATURE (°C) I vs. TIME DURING A NONVOLATILE DD LOG WRITE DUE TO LOG PIN (V = 3.3V, ALL CHANNELS ENABLED, DD SYNC PIN ACTIVE AT 100kHz) 5V/div 0V 1mA/div I DD 0mA Maxim Integrated PMBus Power-Supply Data Logger 100 120 MAX34446 toc03 LOG 2ms/div MAX34446 Typical Operating Characteristics = 3 ...
Page 6
... RS-2 Ground Reference for ADC2 Voltage or Current Measurement 13 Active-Low Reset Input/Output RST 14, 18, 38 N.C. No Connection. Do not connect any signal to these pins. 15 Active-Low, Open-Drain Fault Output for Internal Temperature Sensor FAULT6 Maxim Integrated PMBus Power-Supply Data Logger SDA 31 SCL ...
Page 7
... REG18, REG25, the ADC pins, and the exposed pad are high impedance with a 55µA pullup dur ing device power-up and reset. After device reset, the weak pullup is removed and the pin is configured as an input or output. Maxim Integrated PMBus Power-Supply Data Logger FUNCTION to enable the device. This pin has a 100Fs deglitch filter. When low, ...
Page 8
... PMBUS_REVISION 99h MFR_ID 9Ah MFR_MODEL 9Bh MFR_REVISION 9Ch MFR_LOCATION 9Dh MFR_DATE 9Eh MFR_SERIAL D1h MFR_MODE D4h MFR_VOUT_PEAK D5h MFR_IOUT_PEAK D6h MFR_TEMPERATURE_PEAK Maxim Integrated PMBus Power-Supply Data Logger PAGE PAGE PAGE 0– 255 TYPE (NOTE 1) R/W Byte R/W R/W R/W Send Byte R/W Byte R/W R/W R/W ...
Page 9
... The MAX34446 data logger for power supplies can monitor voltages for overvoltage and undervoltage, as well as for overcurrent conditions and overtemperature conditions. The device constantly checks for user- programmable thresholds; when these thresholds are Maxim Integrated PMBus Power-Supply Data Logger PAGE PAGE PAGE 0– ...
Page 10
... SLAVE ADDRESS Maxim Integrated PMBus Power-Supply Data Logger On device power-up or reset, the device samples the A0 7-BIT SLAVE and A1 pins to determine the PMBus/SMBus serial-port ADDRESS address. See 0010 010 (24h) 0010 011 (26h) The device implements the PMBus command structure 0010 100 (28h) using the SMBus format ...
Page 11
... START or STOP is received, the device does the following: 1) Ignores the command. 2) Sets the CML bit in STATUS_BYTE. Maxim Integrated PMBus Power-Supply Data Logger Group Command data stream. All the devices addressed during this trans- action wait for the host to issue a STOP before beginning to respond to the command ...
Page 12
... The device checks the PAGE and WRITE_PROTECT command codes for valid data. If the host writes a data value that is invalid, the device does the following: 1) Ignores the command. Maxim Integrated PMBus Power-Supply Data Logger 2) Sets the CML bit in STATUS_BYTE. 3) Sets the CML bit in STATUS_WORD. ...
Page 13
... Timing MFR_PG_DELAY READ_POUT Power MFR_POUT_PEAK MFR_POUT_AVG Maxim Integrated PMBus Power-Supply Data Logger PMBus commands, refer to Part II of the PMBus speci- fication available at www.PMBus.org. The supported PMBus commands and the corresponding device behav- ior are described in this document. All data values are represented in DIRECT format, unless otherwise stated ...
Page 14
... the system to know that a particular output is negative if that is of interest to the system. All output voltage-related commands use 2 data bytes. Maxim Integrated PMBus Power-Supply Data Logger Faults are reported in the various status registers and, if enabled with the MFR_FAULT_RESPONSE command, faults can also be indicated on the associated FAULTn output ...
Page 15
... Measurement (Page 2) Power Measurement 2 (Page ADC3 = Current Measurement (Page 3) Maxim Integrated PMBus Power-Supply Data Logger Temperature Sensor Operation The device can monitor up to three different temperature sensors, two external remote diode temperature sensors plus its own internal temperature sensor. The device ...
Page 16
... FAULT_EN bits in MFR_FAULT_RESPONSE are set so that the device responds to a fault or warn- ing. If enabled, the FAULTn pin is not released until all measurements pass. Also, prior to being allowed to set Maxim Integrated PMBus Power-Supply Data Logger RESET COMPLETE AND ENABLE PIN HIGH DISABLE WRITES TO MFR_NV_FAULT_LOG IF FAULT_EN ≠ ...
Page 17
... In the event that the device is locked up and this watchdog reset does not occur after 500ms, the device automatically resets. After the reset occurs, the device reloads all configuration values that Maxim Integrated PMBus Power-Supply Data Logger ...
Page 18
... Remote Diode Temperature Sensor Connected to ADC4 5 Remote Diode Temperature Sensor Connected to ADC5 6 Internal Temperature Sensor 7 to 254 Reserved 255 Applies to All Pages Maxim Integrated PMBus Power-Supply Data Logger 2 C) address. Send the PAGE command with data Table 1 ASSOCIATED CONTROL MAX34446 PMBus Commands PAGE (00h) should apply to all pages at the same time ...
Page 19
... Table 6. CAPABILITY Command Byte BIT DESCRIPTION 7 Packet-Error Checking 6:5 PMBus Speed 4 ALERT 3:0 Reserved Maxim Integrated PMBus Power-Supply Data Logger MEANING 0 = PEC not supported Maximum supported bus speed is 100kHz Device does not support ALERT output. Always returns 0000. MAX34446 CLEAR_FAULTS (03h) WRITE_PROTECT (10h) STORE_DEFAULT_ALL (11h) ...
Page 20
... The 2 data bytes are in DIRECT format. In response to the VOUT_OV_FAULT_LIMIT being exceeded, the device does the following: 1) Sets the VOUT_OV bit in STATUS_BYTE. 2) Sets the VOUT_OV and VOUT bits in STATUS_WORD. 3) Sets the VOUT_OV_FAULT bit in STATUS_VOUT. 4) Responds as specified in the MFR_FAULT_RESPONSE. Maxim Integrated PMBus Power-Supply Data Logger LEVEL (V) (SEE USER NOTE) 1.0 1.0 1.0 1 ...
Page 21
... IOUT_OC_WARN_LIMIT, the device does the following: 1) Sets the NONE OF THE ABOVE bit in STATUS_BYTE. 2) Sets the NONE OF THE ABOVE and MFR bits in STATUS_WORD. 3) Sets the OC_WARN bit in STATUS_MFR_SPECIFIC. 4) Responds as specified in the MFR_FAULT_RESPONSE. Maxim Integrated PMBus Power-Supply Data Logger MAX34446 VOUT_OV_WARN_LIMIT (42h) VOUT_UV_WARN_LIMIT (43h) ...
Page 22
... Any nonzero positive value written to OT_FAULT_LIMIT causes the device to enable temperature measurement. Table 9. OT_FAULT_LIMIT OT_FAULT_LIMIT VALUE 8000h to FFFFh 0000h 0001h to 7FFFh Maxim Integrated PMBus Power-Supply Data Logger 8. DEVICE RESPONSE (ON THE ASSOCIATED PAGE) Negative values are invalid. Current measurement disabled (voltage measurement enabled). Current measurement enabled (voltage measurement disabled). ...
Page 23
... ADC INPUT PGn OUTPUT POWER_GOOD# BIT IN STATUS_MFR_SPECIFIC SYNC OUTPUT MFR_SYNC_CONFIG = 1428h Figure 3. Power Good, SYNC Output, and Status Bit Timing Maxim Integrated PMBus Power-Supply Data Logger (Figure 3). The POWER_GOOD_OFF level is normally set lower POWER_GOOD_ON MFR_PG_DELAY 100kHz MAX34446 OT_WARN_LIMIT (51h) ...
Page 24
... VOUT_OV_FAULT 6 VOUT_OV_WARN 5 VOUT_UV_WARN 4 VOUT_UV_FAULT 3:0 0 Maxim Integrated PMBus Power-Supply Data Logger These bits always return overvoltage fault has occurred. An overcurrent fault has occurred. This bit always returns temperature fault or warning has occurred. A communication, memory, or logic fault has occurred. Table 11 An output voltage fault has occurred. ...
Page 25
... ENABLE pin is low, this command returns 0000h when read. The READ_TEMPERATURE_1 command returns the temperature reading. The 2 data bytes are in DIRECT format. When the ENABLE pin is low, this command returns 0000h when read. Maxim Integrated PMBus Power-Supply Data Logger An invalid or unsupported command has been received. ...
Page 26
... The factory default text string value is 10101010. The upper 4 bytes of MFR_SERIAL are used to unlock a device that has been password protected. The lower 4 bytes of MFR_SERIAL are not used to unlock a device and they can be set to any value. Maxim Integrated PMBus Power-Supply Data Logger Table 15 ...
Page 27
... CHANNEL[1:0] Maxim Integrated PMBus Power-Supply Data Logger Setting this bit to 1 forces the device to log data into the nonvolatile fault log. Once set, the device clears this bit when the action is completed. The host must set again for subsequent action error occurs during this action, the device sets the CML bit in STATUS_BYTE and STATUS_WORD ...
Page 28
... The MFR_VOUT_MIN command returns the minimum measured output voltage. To reset this value, write to this com- mand with a data value of 7FFFh. The 2 data bytes are in DIRECT format. When the ENABLE pin gos low or the channel is disabled, this command resets to 7FFFh. Maxim Integrated PMBus Power-Supply Data Logger MAX34446 ...
Page 29
... PGn pin is asserted. This command sets the time delay in multiples of 1ms. The 2 data bytes are in DIRECT format. When MFR_PG_DELAY = 0000h, the delay is disabled and the PGn output is asserted immediately after power good is declared. Maxim Integrated PMBus Power-Supply Data Logger Table 17 describes the MFR_FAULT_RESPONSE command. ...
Page 30
... READ_VOUT OR READ_IOUT (LATEST 20, 40 READINGS) NOTE: AFTER DEVICE POWER-UP OR RESET, AT LEAST ONE NONFAULTY READING MUST OCCUR BEFORE A NEW FAULT LOG OCCURS. Figure 4. NV Fault Logging Arrangement Maxim Integrated PMBus Power-Supply Data Logger Table 18. Also, the LOGSKIP bits in the MFR_MODE command can ...
Page 31
... MFR_VOUT_MIN or IOUTAVG Page 2 54 MFR_VOUT_MIN or IOUTAVG Page 3 56 RESERVED (0000h) 58 BUFFER INDEX/NUMBER_OF_CH (Notes DATA BUFFER 0 62 DATA BUFFER 1 64 DATA BUFFER 2 Maxim Integrated PMBus Power-Supply Data Logger Table 19 BYTE 128 130 132 134 136 138 140 142 144 146 148 ...
Page 32
... Note 2: BUFFER_INDEX is the index of the buffer where the most recent data is being written. The maximum value for BUFFER_INDEX is dependent upon the number of channels enabled. Note 3: NUMBER_OF_CH indicates how many of the voltage/current channels are enabled. Note 4: LOG_VALID is set to DDh if the fault log contains valid data. Maxim Integrated PMBus Power-Supply Data Logger BYTE 194 ...
Page 33
... It is acceptable to have both the MSB and the LSB programmed to the same frequency, which eliminates the frequency dependency on the state of power good. See Table 20. MFR_SYNC_CONFIG Examples MFR_SYNC_CONFIG MSB OR LSB VALUE (HEX) 08h 19h 7Dh C8h Maxim Integrated PMBus Power-Supply Data Logger Figure 3 SYSTEM OSCILLATOR DIVIDE INTEGER (MHz ...
Page 34
... SCL, SDA, FAULTn, and PGn (when set in MFR_MODE) are open-drain pins and require external pullup resistors connected realize high-logic levels. DD Maxim Integrated PMBus Power-Supply Data Logger MAX34446ETL+ MAX34446ETL+T +Denotes a lead(Pb)-free/RoHS-compliant package Tape and reel. ...
Page 35
... ACCESS FOR A1 CONFIGURATION AND LOG DATA NOTE: THE OPTIONAL KEEP-ALIVE CIRCUIT IS USED TO PROVIDE AN ORDERLY SYSTEM SHUTDOWN AND TO ALLOW THE DEVICE TO STORE ANY FAULTS THAT ARE OCCURRING INTO FLASH MEMORY. Maxim Integrated PMBus Power-Supply Data Logger Typical Application Circuit/Block Diagram 4MHz OSCILLATOR MAX34446 ...
Page 36
... Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed ...