DC1540A Linear Technology, DC1540A Datasheet - Page 15

• Manufacturer Part Number: DC1540A
• Description: LTC2978 Demoboard (includes DC1360A + DC1361A), Requires DC1613A
• Manufacturer: Linear Technology
• Series: -r

Specifications of DC1540A

• Design Resources: DC1540 Design File
• Main Purpose: Power Management, Power Supply Supervisor/Tracker/Sequencer
• Embedded: No
• Utilized Ic / Part: LTC2978
• Primary Attributes: Voltage Detector & Supervisor
• Secondary Attributes: -
• Kit Application Type: Power Management
• Application Sub Type: Power Supply Controller
• Features: Demonstration System For The LTC2978 Octal I2C / SMBus / PMBus Power Supply Monitor & Controller
• Lead Free Status / Rohs Status: Not applicable / Not applicable

MEASURING CURRENT
It is possible to measure the current on Channel 6 by using
Channel 7 in “Hi Res” mode. Follow the instructions on
pp.9 and 10 of DC1361A schematic. Remove R88, R89
and move them to R86, R87. Also remove the preload
resistor R75 (top side) on DC1361A schematic p.9 to
measure only the current going out of the board.
Figure 11. Current Sensing Modifi cations (Bottom Side of Board)
One simple checkbox in the GUI sets up Channel 7 to
measure current. In the MFR_CONFIG_LTC2978 register
check the box that says “adc_hires”. Apply a load between
the big turrets 1.0V and GND on V
voltage across the 10mΩ current sense resistor on the
output of Channel 6 in the GUI.
DEMO MANUAL DC1540A
OUT_6
and read the
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