EVAL-ADM1276EBZ Analog Devices, EVAL-ADM1276EBZ Datasheet - Page 31

• Manufacturer Part Number: EVAL-ADM1276EBZ
• Description: Power Management IC Development Tools EVALUATION BOARD
• Manufacturer: Analog Devices
• Type: Hot Swap & Power Distributionr
• Series: ADM1276r

Specifications of EVAL-ADM1276EBZ

• Rohs: yes
• Tool Is For Evaluation Of: ADM1276
• Input Voltage: 20 V
• Factory Pack Quantity: 1

Data Sheet
Example 3: The PIN_OP_WARN_LIMIT command requires a
power limit value expressed in direct format.
If the required power limit is 350 W and the sense resistor is
1 mΩ, the first step is to determine the m coefficient. Assuming
the 0 V to 20 V range, m = 6043 × 1, which is 6043.
Table 7. PMBus Conversion to Real-World Coefficients
Coefficient
m
b
R
format values must be divided by 256 prior to being
converted with the coefficients shown in Table 7.
Current (A)
807 × R
20,475
−1
SENSE
0 V to 6 V Range
6720
0
−1
Voltage (V)
Rev. B | Page 31 of 48
0 V to 20 V Range
19,199
0
−2
Using Equation 1, and working with the 0 V to 20 V range,
Writing a value of 21,151 with the PIN_OP_WARN_LIMIT
command sets an overpower warning at 350 W.
Y = ((6043 × 350) × 10
Y = 21,150.5 = 21,151 (rounded up to integer form)
0 V to 6 V Range
2115 × R
0
−1
SENSE
-2
Power (W)
0
0 V to 20 V Range
6043 × R
−2
SENSE
ADM1276