LTC3880

DC1962C Demo Board for:
LTC2974 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
LTC3880 Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management
LTC2977 8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement

Demonstration circuit 2089A is a high current, high efficiency, poly-phase synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller, and the LTC3870EUFD, a dual-phase slave controller. The LTC3880 has the PMBus interface and power system management functions.

The input range of this board is from 7V to 14V, and the output voltage can be programmed from 0.8V to 1.8V. The output current is up to 80A for 4-phase operation. The DC2089A has two versions, the DC2089A-A uses a current sense resistor, while the DC2089A–B has DCR current sensing. The factory default setting for the output voltage is 1.0V.

You can use a PC to reconfigure the power management features of the LTC3880 such as: nominal V_OUT, margin set points, OV/UV limits, temperature fault limits, sequencing parameters, the fault log, fault responses, GPIO and other functionality.

DC1962C-KIT Demo Board for:
LTC2977 8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement
LTC2974 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
LTC3880 Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management

Demonstration circuit 2052A is a 3-phase single output synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller, and the LTC3883EUH, a single-phase current mode controller with input current sensing capability. Both devices have a PMBus interface and the power system management functions.

The input voltage range of this board is from 6.5V to 14V. The output voltage can be programmed from 0.5V to 1.8V, with an output current of up to 60A total. The factory default setting for the output voltage is 1.0V.

Demonstration circuit 2089A is a high current, high efficiency, poly-phase synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller, and the LTC3870EUFD, a dual-phase slave controller. The LTC3880 has the PMBus interface and power system management functions.

The input range of this board is from 7V to 14V, and the output voltage can be programmed from 0.8V to 1.8V. The output current is up to 80A for 4-phase operation. The DC2089A has two versions, the DC2089A-A uses a current sense resistor, while the DC2089A–B has DCR current sensing. The factory default setting for the output voltage is 1.0V.

You can use a PC to reconfigure the power management features of the LTC3880 such as: nominal V_OUT, margin set points, OV/UV limits, temperature fault limits, sequencing parameters, the fault log, fault responses, GPIO and other functionality.

Demonstration circuit 1590B is a dual output synchronous buck converter featuring the LTC3880EUJ, a dual output peak current mode controller with digital power system management. There are two versions of the board available: DC1590B-A senses the output current across a sense resistor and has a default switching frequency of 350kHz, and DC1590B-B senses output current with the inductor DCR and has a default switching frequency of 425kHz. Either version can be populated with the LTC3880EUJ-1 (which allows the user to provide bias power to the IC from an external power supply) instead of the LTC3880EUJ. These boards provide two programmable outputs of 20A each. The factory default settings are 1.8V for each output.

Demonstration circuit 1740A is a PolyPhase^® synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller with PMBus interface and digital power system management functions. The DC1740A-B is a two chip 3 + 1 phase dual-output configuration. The default output settings are V_OUT0 = 1.5V/20A and V_OUT1 = 1.2V/60A.

The DC1740A powers up to default settings and produces power based on configuration resistors or with non-volatile memory (NVM) settings without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter aspects of the LTC3880. To fully explore the extensive digital power management features of the parts, download the GUI software LTpowerPlay™ onto your PC and use LTC’s I²C/SMBus/PMBus Dongle DC1613A to connect to the board.

Demonstration circuit 1740A is a PolyPhase^® synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller with PMBus interface and digital power system management functions. The DC1740A-A is a two chip 4-phase single-output configuration. The default output setting is V_OUT0 = 1.2V/80A.

The DC1740A powers up to default settings and produces power based on configuration resistors or with non-volatile memory (NVM) settings without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter aspects of the LTC3880. To fully explore the extensive digital power management features of the parts, download the GUI software LTpowerPlay™ onto your PC and use LTC’s I²C/SMBus/PMBus Dongle DC1613A to connect to the board.

Demonstration circuit 1590B is a dual output synchronous buck converter featuring the LTC3880EUJ, a dual output peak current mode controller with digital power system management. There are two versions of the board available: DC1590B-A senses the output current across a sense resistor and has a default switching frequency of 350kHz, and DC1590B-B senses output current with the inductor DCR and has a default switching frequency of 425kHz. Either version can be populated with the LTC3880EUJ-1 (which allows the user to provide bias power to the IC from an external power supply) instead of the LTC3880EUJ. These boards provide two programmable outputs of 20A each. The factory default settings are 1.8V for each output.

Demonstration circuit 1753B-B is a dual phase single-output, synchronous buck converter featuring the LTC3880EUJ, a dual phase current mode controller with digital power system management. It operates with an input voltage range of 6.5V to 24V. The demo board senses inductor current with the inductor DCR and has a default switching frequency of 425kHz. The output voltage of the board can be programmed from 0.5V to 3.3V, with output current up to 40A. The factory default setting for the output is 1.8V. 

Demonstration circuit 1753B-A is a dual phase single-output, synchronous buck converter featuring the LTC3880EUJ, a dual phase current mode controller with digital power system management. It operates with an input voltage range of 6.5V to 24V. The demo board senses inductor current across a sense resistor and has a default switching frequency of 350kHz. The output voltage of the board can be programmed from 0.5V to 3.3V, with output current up to 40A. The factory default setting for the output is 1.8V. 

Demonstration circuit 2088A is a high current, high density, two-phase single output synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller. The LTC3880 has the PMBus interface and power system management functions.

DC1709A: Demo Board for the LTC3880 Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management.

Demonstration circuit 1753A is a dual phase single-output, synchronous buck converter featuring the LTC3880EUJ, a dual phase current mode controller with digital power management. The DC1753A-A senses inductor current across a sense resistor. Default switching Freq = 350kHz. The demo board can be populated with the LTC3880EUJ-1, which allows the user to provide bias power to the IC from an external power supply. The output voltage of the board can be programmed from 0.5V to 3.3V, with output current up to 40A. The factory default setting for the output is 1.8V.