adm1027 Analog Devices, Inc., adm1027 Datasheet - Page 33
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adm1027
Manufacturer Part Number
adm1027
Description
Dbcool? Remote Thermal Controller And Voltage Monitor
Manufacturer
Analog Devices, Inc.
Datasheet
1.ADM1027.pdf
(56 pages)
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Example: Calculate T
and PWM
T
Example: Calculate T
and PWM
T
Selecting a T
The T
Remote 1, Local and Remote 2 Temp. Bits <7:4> (TRANGE)
of Registers 0x5F to 0x61 define the T
temperature channel.
REV. A
T
T
T
T
T
T
MAX
MAX
MAX
MAX
MAX
MAX
MAX
MAX
= 70
= 60
RANGE
=
=
=
=
=
=
30
T
30
T
30
30
MIN
MIN
MIN
∞
MIN
∞
C (effective T
C (effective T
∞
∞
∞
∞
C
C
C
C
value can be selected for each temperature channel:
RANGE
= 33% duty cycle = 85 decimal
= 50% duty cycle = 128 decimal
+
+
+
+
+
+
(
(
(
(
(
(
100
100
255 85
255 128
MaxD C
MaxD C
Slope
%
%
-
MAX
MAX
-
-
-
. .
. .
RANGE
RANGE
, given T
, given T
50
33
)
¥
)
-
-
%
%
¥
40
MinD C
MinD C
)
)
40
= 40
= 30
¥
¥
∞
C
∞
40
40
MIN
MIN
C
170
∞
∞
. .
. .
∞
∞
C)
C)
170
RANGE
C
C
= 30∞C, T
= 30∞C, T
)
)
170
170
¥
¥
T
T
value for each
RANGE
RANGE
RANGE
RANGE
170
170
= 40∞C,
= 40∞C,
–33–
Bits <7:4>*
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
* Register 0x5F configures remote 1 T
Register 0x60 configures local T
Register 0x61 configures remote 2 T
2
2.5
3.33
4
5
6.67
8
10
13.33
16
20
26.67
32 (default)
40
53.33
80
T
RANGE
RANGE
(∞C)
RANGE
RANGE
.
ADM1027
.
.