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ADP1046AACPZ-R7 数据表(PDF) 67 Page - Analog Devices

部件名 ADP1046AACPZ-R7
功能描述  Digital Controller for Isolated Power Supply Applications
PDF  88 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADP1046AACPZ-R7 数据表(HTML) 67 Page - Analog Devices

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Data Sheet
ADP1046A
Rev. 0 | Page 67 of 88
Table 69. Register 0x45—OUTB Rising Edge Timing (OUTB Pin)
Bits
Bit Name
R/W
Description
[7:0]
t
3
R/W
This register contains the eight MSBs of the 12-bit t
3 time. This value is always used with the top
four bits of Register 0x46, which contains the four LSBs of the t
3 time. Each LSB corresponds to
5 ns resolution. The entire switching period is divided into 40 ns time steps. If the t
Rx and tFx of a
PWM edge occur within the same 40 ns time step, the PWM output is 0 V. If the t
Rx and tFx occur
in different 40 ns time steps, the PWM output is set to the programmed value. The absolute
maximum pulse width is t
PERIOD − 5 ns.
Table 70. Register 0x46—OUTB Rising Edge Setting (OUTB Pin)
Bits
Bit Name
R/W
Description
[7:4]
t
3
R/W
These bits contain the four LSBs of the 12-bit t
3 time. This value is always used with the eight
bits of Register 0x45, which contains the eight MSBs of the t
3 time. Each LSB corresponds to
5 ns resolution. The entire switching period is divided into 40 ns time steps. If the t
Rx and tFx of a
PWM edge occur within the same 40 ns time step, the PWM output is 0 V. If the t
Rx and tFx occur
in different 40 ns time steps, the PWM output is set to the programmed value. The absolute
maximum pulse width is t
PERIOD − 5 ns.
3
Modulate enable
R/W
1 = PWM modulation acts on the t
3 edge.
0 = no PWM modulation of the t
3 edge.
2
t
3 sign
R/W
1 = negative sign. Increase of PWM modulation moves t
3 right.
0 = positive sign. Increase of PWM modulation moves t
3 left.
1
Reserved
R/W
Reserved.
0
Volt-second balance
source selection
R/W
If this bit is set to 1, the OUTB rising edge is selected as the start of the integration period for
volt-second balance.
Table 71. Register 0x47—OUTB Falling Edge Timing (OUTB Pin)
Bits
Bit Name
R/W
Description
[7:0]
t
4
R/W
This register contains the eight MSBs of the 12-bit t
4 time. This value is always used with the top
four bits of Register 0x48, which contains the four LSBs of the t
4 time. Each LSB corresponds to
5 ns resolution. The entire switching period is divided into 40 ns time steps. If the t
Rx and tFx of a
PWM edge occur within the same 40 ns time step, the PWM output is 0 V. If the t
Rx and tFx occur
in different 40 ns time steps, the PWM output is set to the programmed value. The absolute
maximum pulse width is t
PERIOD − 5 ns.
Table 72. Register 0x48—OUTB Falling Edge Setting (OUTB Pin)
Bits
Bit Name
R/W
Description
[7:4]
t
4
R/W
These bits contain the four LSBs of the 12-bit t
4 time. This value is always used with the eight
bits of Register 0x47, which contains the eight MSBs of the t
4 time. Each LSB corresponds to
5 ns resolution. The entire switching period is divided into 40 ns time steps. If the t
Rx and tFx of a
PWM edge occur within the same 40 ns time step, the PWM output is 0 V. If the t
Rx and tFx occur
in different 40 ns time steps, the PWM output is set to the programmed value. The absolute
maximum pulse width is t
PERIOD − 5 ns.
3
Modulate enable
R/W
1 = PWM modulation acts on the t
4 edge.
0 = no PWM modulation of the t
4 edge.
2
t
4 sign
R/W
1 = negative sign. Increase of PWM modulation moves t
4 right.
0 = positive sign. Increase of PWM modulation moves t
4 left.
[1:0]
Reserved
R/W
Reserved.
Table 73. Register 0x49—OUTC Rising Edge Timing (OUTC Pin)
Bits
Bit Name
R/W
Description
[7:0]
t
5
R/W
This register contains the eight MSBs of the 12-bit t
5 time. This value is always used with the top
four bits of Register 0x4A, which contains the four LSBs of the t
5 time. Each LSB corresponds to
5 ns resolution. The entire switching period is divided into 40 ns time steps. If the t
Rx and tFx of a
PWM edge occur within the same 40 ns time step, the PWM output is 0 V. If the t
Rx and tFx occur
in different 40 ns time steps, the PWM output is set to the programmed value. The absolute
maximum pulse width is t
PERIOD − 5 ns.



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