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UP9507 Datasheet(PDF) 12 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) 12 Page - uPI Group Inc.

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uP9507
12
uP9507-DS-C3000, June. 2015
www.upi-semi.com
Conceptual
Functional Description
Operation Phase Disable Function
The uP9507 supports operation phase disable function to
further increase the design flexibility. Platform designer can
choose to disable some phases to meet their design
requirement. Both Vcore and VccGT rail support operation
phase disable function. The minimum operation phase
number is 1+1-phase. In general, to disable a specific phase,
pull up CSNx to VCC through 1k
Ω resistor and tie CSPx to
ground for that phase. The controller detects all the CSNx
and CSPx voltage at VCC power on reset to determine
operation phase number.
To let VccGT in single-phase operation, pull up CSN2A to
VCC through 1k
Ω resistor and tie CSP1A to ground. The
CSN1A and CSP1A should be remain in normal connection
with no change. In this case, the embedded MOSFET driver
with pin name suffix 2A is disabled. Table 2 shows the
operation phase number setting. Strictly follow Table 2
setting to disable phases. Incorrect PROG1 setting and
incorrect pin CSPx/CSNx pull up/down connection will
cause catastrophic fault during start up.
Table 2. Operation Phase Number Setting
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