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ADP1046AW Datasheet(PDF) 66 Page - Analog Devices

Part No. ADP1046AW
Description  Digital Controller for Isolated
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADP1046AW Datasheet(HTML) 66 Page - Analog Devices

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ADP1046AW
Data Sheet
Rev. 0 | Page 66 of 88
Bits
Bit Name
R/W
Description
[5:0]
Switching frequency
R/W
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Frequency (kHz)
1
1
0
0
0
1
416.67
1
1
0
0
1
0
446.43
1
1
0
0
1
1
480.77
1
1
0
1
0
0
520.83
1
1
0
1
0
1
568.18
1
1
0
1
1
0
625
1
1
1
1
1
1
Resonant mode
Table 65. Register 0x41—OUTA Rising Edge Timing (OUTA Pin)
Bits
Bit Name
R/W
Description
[7:0]
t1
R/W
This register contains the eight MSBs of the 12-bit t1 time. This value is always used with the top
four bits of Register 0x42, which contains the four LSBs of the t1 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 66. Register 0x42—OUTA Rising Edge Setting (OUTA Pin)
Bits
Bit Name
R/W
Description
[7:4]
t1
R/W
These bits contain the four LSBs of the 12-bit t1 time. This value is always used with the eight
bits of Register 0x41, which contains the eight MSBs of the t1 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 t1 edge.
0 = no PWM modulation of the t1 edge.
2
t1 sign
R/W
1 = negative sign. Increase of PWM modulation moves t1 right.
0 = positive sign. Increase of PWM modulation moves t1 left.
1
Reserved
R/W
Reserved.
0
Volt-second balance
source selection
R/W
If this bit is set to 1, the OUTA rising edge is selected as the start of the integration period for
volt-second balance.
Table 67. Register 0x43—OUTA Falling Edge Timing (OUTA Pin)
Bits
Bit Name
R/W
Description
[7:0]
t2
R/W
This register contains the eight MSBs of the 12-bit t2 time. This value is always used with the top
four bits of Register 0x44, which contains the four LSBs of the t2 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 68. Register 0x44—OUTA Falling Edge Setting (OUTA Pin)
Bits
Bit Name
R/W
Description
[7:4]
t2
R/W
These bits contain the four LSBs of the 12-bit t2 time. This value is always used with the eight
bits of Register 0x43, which contains the eight MSBs of the t2 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 t2 edge.
0 = no PWM modulation of the t2 edge.
2
t2 sign
R/W
1 = negative sign. Increase of PWM modulation moves t2 right.
0 = positive sign. Increase of PWM modulation moves t2 left.
[1:0]
Reserved
R/W
Reserved.


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