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Part Name
Description
RT8885A View Datasheet(PDF) - Richtek Technology
Part Name
Description
Manufacturer
RT8885A
Dual Output 3-Phase + 2-Phase PWM Controller For CPU and GPU Core Power Supply
Richtek Technology
RT8885A Datasheet PDF : 59 Pages
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RT8885A
Table 6. RSETA/OFSA Pin Setting (Forced-DEM Enable and Ramp Factor)
RSETA/OFSA Pin
GFX VR
Forced-DEM
GFX VR
Voltage Difference
Compensation
V
RSETA
(Before and
Ramp Factor
After Current
Injection) (mV)
1
52.5
2
87.5
3
122.5
4
157.5
5
192.5
6
227.5
7
262.5
8
297.5
9
332.5
10
367.5
11
402.5
12
437.5
13
472.5
14
507.5
Disable
15
16
542.5
577.5
17
612.5
18
647.5
19
682.5
20
717.5
21
752.5
22
787.5
23
822.5
24
857.5
25
892.5
26
927.5
27
962.5
28
997.5
29
1032.5
30
1067.5
RSETA/OFSA Pin
GFX VR
Forced-DEM
GFX VR
Compensation
Ramp Factor
Voltage Difference
V
RSETA
(Before and
After Current
Injection) (mV)
1
1172.5
2
1207.5
3
1242.5
4
1277.5
5
1312.5
6
1347.5
7
1382.5
8
1417.5
9
1452.5
10
1487.5
11
1522.5
12
1557.5
13
1592.5
14
1627.5
Enable
15
16
1662.5
1697.5
17
1732.5
18
1767.5
19
1802.5
20
1837.5
21
1872.5
22
1907.5
23
1942.5
24
1977.5
25
2012.5
26
2047.5
27
2082.5
28
2117.5
29
2152.5
30
2187.5
Copyright
©
2014 Richtek Technology Corporation. All rights reserved.
www.richtek.com
20
is a registered trademark of Richtek Technology Corporation.
DS8885A-01 January 2014
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