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ADP1046AW Datasheet(PDF) 68 Page - Analog Devices

Part No. ADP1046AW
Description  Digital Controller for Isolated
Download  88 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADP1046AW Datasheet(HTML) 68 Page - Analog Devices

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ADP1046AW
Data Sheet
Rev. 0 | Page 68 of 88
Table 74. Register 0x4A—OUTC Rising Edge Setting (OUTC Pin)
Bits
Bit Name
R/W
Description
[7:4]
t5
R/W
These bits contain the four LSBs of the 12-bit t5 time. This value is always used with the eight
bits of Register 0x49, which contains the eight MSBs of the t5 time. Each LSB corresponds to
5 ns resolution. The entire switching period is divided into 40 ns time steps. If the tRx and tFx of a
PWM edge occur within the same 40 ns time step, the PWM output is 0 V. If the tRx and tFx occur
in different 40 ns time steps, the PWM output is set to the programmed value. The absolute
maximum pulse width is tPERIOD − 5 ns.
3
Modulate enable
R/W
1 = PWM modulation acts on the t5 edge.
0 = no PWM modulation of the t5 edge.
2
t5 sign
R/W
1 = negative sign. Increase of PWM modulation moves t5 right.
0 = positive sign. Increase of PWM modulation moves t5 left.
1
Reserved
R/W
Reserved.
0
Volt-second balance
source selection
R/W
If this bit is set to 1, the OUTC rising edge is selected as the start of the integration period for
volt-second balance.
Table 75. Register 0x4B—OUTC Falling Edge Timing (OUTC Pin)
Bits
Bit Name
R/W
Description
[7:0]
t6
R/W
This register contains the eight MSBs of the 12-bit t6 time. This value is always used with the top
four bits of Register 0x4C, which contains the four LSBs of the t6 time. Each LSB corresponds to
5 ns resolution. The entire switching period is divided into 40 ns time steps. If the tRx and tFx of a
PWM edge occur within the same 40 ns time step, the PWM output is 0 V. If the tRx and tFx occur
in different 40 ns time steps, the PWM output is set to the programmed value. The absolute
maximum pulse width is tPERIOD − 5 ns.
Table 76. Register 0x4C—OUTC Falling Edge Setting (OUTC Pin)
Bits
Bit Name
R/W
Description
[7:4]
t6
R/W
These bits contain the four LSBs of the 12-bit t6 time. This value is always used with the eight
bits of Register 0x4B, which contains the eight MSBs of the t6 time. Each LSB corresponds to
5 ns resolution. The entire switching period is divided into 40 ns time steps. If the tRx and tFx of a
PWM edge occur within the same 40 ns time step, the PWM output is 0 V. If the tRx and tFx occur
in different 40 ns time steps, the PWM output is set to the programmed value. The absolute
maximum pulse width is tPERIOD − 5 ns.
3
Modulate enable
R/W
1 = PWM modulation acts on the t6 edge.
0 = no PWM modulation of the t6 edge.
2
t6 sign
R/W
1 = negative sign. Increase of PWM modulation moves t6 right.
0 = positive sign. Increase of PWM modulation moves t6 left.
[1:0]
Reserved
R/W
Reserved.
Table 77. Register 0x4D—OUTD Rising Edge Timing (OUTD Pin)
Bits
Bit Name
R/W
Description
[7:0]
t7
R/W
This register contains the eight MSBs of the 12-bit t7 time. This value is always used with the
top four bits of Register 0x4E, which contains the four LSBs of the t7 time. Each LSB corresponds
to 5 ns resolution. The entire switching period is divided into 40 ns time steps. If the tRx and tFx
of a PWM edge occur within the same 40 ns time step, the PWM output is 0 V. If the tRx and tFx
occur in different 40 ns time steps, the PWM output is set to the programmed value. The
absolute maximum pulse width is tPERIOD − 5 ns.


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