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UP9507 Datasheet(PDF) 13 Page - uPI Group Inc.

Part # UP9507
Description  3/2/12/1-Phase Driver Embedded PWM Controller for IMVP8
PDF  28 Pages
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Manufacturer  UPI [uPI Group Inc.]
Direct Link  http://www.ubiq-semi.com/
Logo UPI - uPI Group Inc.

UP9507 Datasheet(HTML) 13 Page - uPI Group Inc.

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uP9507
13
uP9507-DS-C3000, June. 2015
www.upi-semi.com
Conceptual
Functional Description
Initial Start up Voltage (Vboot) (PROG2)
The uP9507 features selectable initial start up voltage
(Vboot). PROG2 is a function setting pin, which is used to
set this essential parameter. Refer to Figure 4, resistors
R
3 and R4 connected in parallel from this pin to ground sets
the initial start up voltage (Vboot). The Vboot can be set to
0V, 0.8V, 1.05V, 1.2V or 1.5V. Both the Vcore rail and
VccGT rail share the same Vboot setting. Table 3 shows
the recommended resistance value for PROG2 function
setting.
Although Vcore and VccGT share the same Vboot setting,
there is an exception for the rail with SVID address being
set to 02h and 03h. For the rail with SVID address being
set to 02h or 03h, its Vboot voltage will be fixed at 1.05V,
regardless of the PROG2 pin setting. The Vboot voltage of
other rail (SVID address = 00h or 01h) still follows PROG2
pin setting. In this case, the Vboot voltage for SVID address
[00, 02], or [01, 03] will be different. For example, when
Vboot is set to 0V (PROG2 pin short to GND) and SVID
address is set to [00, 02], the Vboot voltage for the rail
with address = 00 and address = 01 is 0V and 1.05V,
respectively.
Table 3. Vboot Voltage Setting
.
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R
3
R
4
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28
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03
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43
3
35
.
13
12
1
42
.
16
10
2
55
0
.
14
24
2
Note: For the rail with SVID address being set to 02h or
03h, its Vboot voltage will be fixed at 1.05V, regardless of
the PROG2 pin setting. The Vboot voltage of other rail (SVID
address = 00h or 01h) still follows PROG2 pin setting.
Dynamic VID Transition Boost, Multi-Phase TB Enable
Control (PROG3)
Refer to Figure 4, the PROG3 pin is used to set two VR
parameters: dynamic VID transition boost and load transient
boost enable control. The uP9507 provides dynamic VID
transition boost function to improve the dynamic VID (D-
VID) transition performance. Both the Vcore rail and VccGT
rail share the same setting. In addition, this part provides
load transient boost function to improve load transient
response when in multi-phase operation. Similarly, both
the Vcore rail and VccGT rail share the same setting. Table
4 shows the recommended resistance value for PROG3
function setting.
Table 4. D-VID Transition Boost and TB Enable Setting
.
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60
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14
24
2
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33
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20
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10
7
20
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4
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30
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40
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