ADP1046-100-EVALZ AD [Analog Devices], ADP1046-100-EVALZ Datasheet - Page 76

• Manufacturer Part Number: ADP1046-100-EVALZ
• Description: Digital Controller for Isolated
• Manufacturer: AD [Analog Devices]

ADP1046
ADAPTIVE DEAD TIME REGISTERS
Register 0x68 to Register 0x70 can be used to program the adaptive dead time (ADT) feature. It is recommended that the software GUI be
used to program the adaptive dead time edges.
Table 104. Register 0x68—Adaptive Dead Time Threshold
Bits
[7:0]
Table 105. Register 0x69—Dead Time 1
Bits
7
[6:4]
3
[2:0]
Bit Name
Adaptive dead
time threshold
Bit Name
t
t
t
t
1
1
2
2
polarity
offset
polarity
offset
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
This register sets the ADT threshold. This 8-bit number is compared to the eight MSBs of the CS1 value
register (Register 0x13). When the current level measured on CS1 falls below this threshold, the edges of
the PWM signals are affected as a linear function of the CS1 current, as programmed in Register 0x69
to Register 0x6F. When this register is programmed to 0x00, the ADT function is disabled.
Description
0 = positive polarity; 1 = negative polarity.
This value multiplied by Register 0x70[2:0] determines the t
Bit 6
0
0
0
0
1
1
1
1
0 = positive polarity; 1 = negative polarity.
This value multiplied by Register 0x70[2:0] determines the t
Bit 2
0
0
0
0
1
1
1
1
Figure 58. Adaptive Dead Time Window in the GUI
Bit 5
0
0
1
1
0
0
1
1
Bit 1
0
0
1
1
0
0
1
1
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Bit 4
0
1
0
1
0
1
0
1
Bit 0
0
1
0
1
0
1
0
1
Offset (ns)
0
1
2
3
4
5
6
7
Offset (ns)
0
1
2
3
4
5
6
7
1
2
offset from nominal timing at no load.
offset from nominal timing at no load.
Data Sheet