ADP1043A datasheet(40/72 Pages) AD

Part #	ADP1043A

Description	Digital Controller for Isolated Power Supply Applications

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ADP1043A

Rev. 0 | Page 40 of 72

Table 24. Register 0x19—CS2 × VS3 Value (Output Power)

Bits

Name

R/W

Description

[15:0]

Output power value

R

This register contains the 16-bit output power information. This value is the product of the remote

output voltage value (VS3) and the output current reading (CS2). To read the output power

information, this register must be read using two consecutive read operations. The eight bits

of the first read return the eight MSBs of the output power information. The eight bits of the

second read return the eight LSBs of the output power information. See the Power Readings

section for the formulas needed to convert this digital reading into power information.

Table 25. Register 0x1A—RTD Temperature Value

Bits

Name

R/W

Description

[15:4]

Temperature value

R

This register contains the 12-bit output temperature information, as determined from the

RTD pin. To read the temperature information, this register must be read using two consecu-

tive read operations. The eight bits of the first read return the eight MSBs of the temperature

information. The top four bits of the second read return the four LSBs of the temperature

information. The range of the RTD pin is from 0 V to 1.55 V. This value has 12 bits of resolution,

which results in an LSB size of 378 μV. At 0 V input, the value in this register is 0 (0x000). At

1.5 V input, the ADC output is 3964 (0xF7C). The recommended nominal voltage at this pin

is 1 V. At 1 V input, the value in this register is 2643 (0xA53).

[3:0]

Reserved

R

Reserved.

Table 26. Register 0x1D—Share Bus Value

Bits

Name

R/W

Description

[7:0]

Share bus value

R

This register contains the 8-bit share bus voltage information. If the power supply is the

master, this register outputs 0.

Table 27. Register 0x1E—Modulation Value

Bits

Name

R/W

Description

[7:0]

Modulation value

R

This register contains the 8-bit modulation information. It outputs the amount of

modulation from 0% to 100% that is being placed on the modulating edges.

Table 28. Register 0x1F—Line Impedance Value

Bits

Name

R/W

Description

[7:0]

Line impedance value

R

This register contains the 8-bit line impedance information. This value is (VS2 − VS3)/CS2.

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