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LTM4686 Datasheet(PDF) 1 Page - Analog Devices |
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LTM4686 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 130 page  1 LTM4682 Rev. 0 For more information www.analog.com Document Feedback TYPICAL APPLICATION FEATURES DESCRIPTION Low Profile Quad 31.25A or Single 125A μModule Regulator with Digital Power System Management The LTM®4682 is a quad 31.25A or single 125A step-down power µModule® (power micromodule) DC/DC regulator featuring remote configurability and telemetry monitor- ing of power management parameters over PMBus. The LTM4682 is comprised of digitally programmable analog control loops, and is optimized for higher bandwidth and transient response. The LTM4682’s 2-wire serial interface allows outputs to be margined, tuned, and ramped up and down at programmable slew rates with sequencing delay times. True input current sense, output currents, output voltages, output power, temperatures, uptime, and peak values are readable. Custom configuration of the EEPROM contents is not required. At start-up, output voltages, switching frequency, and channel phase angle assignments can be set by pin-strapping resistors. The LTpowerPlay® graphical user interface (GUI), the DC1613A USB-to-PMBus con- verter, and evaluation kits are available. The LTM4682 is offered in a 15mm × 22mm × 5.71mm BGA package available with an SnPb or a RoHS-compliant terminal finish. APPLICATIONS n Quad Digitally Adjustable Analog Loops with Digital Interface for Control and Monitoring n Wide Input Voltage Range: 4.5V to 16V n Output Voltage Range: 0.7V to 1.35V n ±0.5% DC Output Accuracy at 0.75V n ±4.5% Current Readback Accuracy: 0°C to 125°C n Optimized for Low Output Voltage Ranges n 400kHz PMBus-Compliant I2C Serial Interface n Supports Telemetry Polling Rates Up to 125Hz n Integrated 16-Bit ∆Σ ADC n Parallel and Current Share Multiple Modules n 15mm × 22mm × 5.71mm BGA Package Readable Data n Input and Output Voltages, Currents, and Temperatures n Running Peak Values, Uptime, Faults and Warnings n Onboard EEPROM Fault Log Record Writable Data and Configurable Parameters n Output Voltage, Voltage Sequencing and Margining n Digital Soft-Start/Stop Ramp, Program Analog Loop n OV/UV/OT, UVLO, Frequency and Phasing n Multi-Rail Processor Power, Configurable Core Power All registered trademarks and trademarks are the property of their respective owners. Quad 31.25A µModule Regulator with Digital Interface for Control and Monitoring Single Channel Efficiency vs Load Current POWER GOOD MONITORS FAULT INTERRUPTS ON/OFF CONTROL 4.5V TO 16V CBULK 22µF ×6 22µF ×6 LOAD 1.2V AT 31.25A CBULK LOAD 1.0V AT 31.25A CBULK LOAD 0.9V AT 31.25A CBULK LOAD 0.75V AT 31.25A CER CER CER CER 4682 TA01a PGOOD0,1,2,3 FAULT0,1,2,3 RUN0,1,2,3 RUNP VIN_VBIAS SVIN_23 VIN23 IN_23– IN_23+ SVIN_01 VIN01 IN_01– IN_01+ VOSNS3– VOSNS3+ VOUT3 VOSNS2– VOSNS2+ VOUT2 VOSNS1– VOSNS1+ VOUT1 VOSNS0– VOSNS0+ VOUT0 LTM4682 I2C/SMBus I/F WITH PMBus COMMAND SET TO/FROM IPMI OR OTHER BOARD MANAGEMENT CONTROLLER SYNCHRONIZATION TIME BASE REGISTER WRITE PROTECTION FOR COMPLETE CIRCUIT SEE FIGURE 48 (FROM 4.5V TO 5.5V CONNECT VIN, SVIN, AND INTVCC TOGETHER) + + + + RSENSE1 RSENSE2 LOAD CURRENT (A) 0 5 10 15 20 25 30 35 60 65 70 75 80 85 90 95 100 4682 TA01b 12VIN, 0.75VOUT, 575kHz 12VIN, 0.9VOUT, 650kHz 12VIN, 1.0VOUT, 650kHz 12VIN, 1.2VOUT, 650kHz 12VIN, 1.35VOUT, 750kHz Configurable Output Array 31.25A 31.25A 31.25A 31.25A 62.5A 31.25A 31.25A 93.75A 31.25A 62.5A 62.5A 125A |
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