Analog Devices LTC3884 | Demoboard DC2605A

Description

Demonstration circuit 2605A is a high efficiency, high density, single-output buck converter with 7V to 14V input range. The output voltage is adjustable from 0.5V to 1.5V, and can supply up to 120A of load current with a 1V output. The demo board features the LTC®3884-1paired with a slave controller LTC3874-1 to provide a 4-phase buck converter solution. The LTC3884-1 is a dual output poly phase step-down controller for ultra-low DCR sensingwith digital power system management. The LTC®3874-1 is a dual PolyPhase® current mode synchronous stepdown slave controller. Please see LTC3884-1 data sheet for more detailed information. DC2605A powers up to default settings and produces power based on configuration resistors or with its non-volatile memory without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power system management features of the part, download the GUI software LTpowerPlay® onto your PC and use LTC’s I2C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on the fly and store the configuration in EEPROM, viewtelemetry of voltage, current, temperature and fault status.

Features

• PMBus/I2C Compliant Serial Interface– Telemetry Read-Back Includes VIN, IIN, VOUT, IOUT, Temperature and Faults– Programmable Voltage, Current Limit, Digital Soft- Start/Stop, Sequencing, Margining, OV/UV/OC
• Sub-Milliohm DCR Current Sensing
• Digitally Adjustable Loop Compensation Parameters
• ±0.5% Output Voltage Accuracy Over Temperature
• Integrated Input Current Sense Amplifier
• Internal EEPROM with ECC and Fault Logging
• Integrated N-Channel MOSFET Gate Drivers (LTC3884) Power Conversion
• Wide VIN Range: 4.5V to 38V
• VOUT Range: 0.5V to 3.5V (with Low DCR Setting); 0.5V to 5.5V (without Low DCR Setting)
• Accurate PolyPhase® Current Sharing for Up to 6 Phases
• Available in 48-Lead 7mm × 7mm QFN and5mm × 6mm GQFN Packages.

Typical applications

• Telecom, Datacom, and Storage Systems
• Industrial and Point-of-Load Applications

More information

• Datasheet