uP9505
4/3/2/1+2/1/0-Phase PWM Controller
with SMBus Digital Interface for FM2+ CPU Core Power
Features
General Description
AMD SVI2 CPU Compliant
RCOT+TM Control Topology
The uP9505 is anAMDSVI2 compliant desktop CPU voltage
regulator controller that integrates a 4-phase PWM
controller for VDDand a 2-phase controller for VDDA. The
VDDcontroller can be configured as 4/3/2/1-phase, and the
VDDA controller can be configured as 2/1/0-phase (0
denotes VDDA controller is disabled) for platform power
design flexibility. For the typical 4+2-phase application, the
4-phase VDDcontroller has 4 PWM outputs. The 2-phase
VDDAcontroller has 2 PWM outputs. The controller provides
further flexible operating phase configurations to support
6+0 or 5+1 phase application (0 denotes VDDA controller
is disabled). The integrated SMBus interface
programmability makes this part with high performance and
easy design. Designer can define different power scenario
for different current states to optimize the performance and
efficiency.
Easy Setting
Smooth Mode Transition
Fast Transition Response
Flexible Operation Phase Configuration
4/3/2/1-Phase PWM Controller for VDD
2/1/0-Phase PWM Controller for VDDA
Support Operation Phase Disable Function
Support 6+0 or 5+1 Phase Application
SMBus Interface for Performance and Efficiency
Optimization
Dynamic Programmable VR Parameters
Programmable Protection Thresholds
VR Output Reporting
Programmable Loop Gain
Programmable Operation Frequency
Inductor DCR Current Sensing for Droop/
Channel OCP/ Total OCP
Differential Current Sense Amplifier for Current
Balance
Differential Remote Output Voltage Sense
Transient Boost for Fast Transient Response
High Accuracy DAC
The uP9505 combines true differential output voltage sense,
differential inductorDCR current sense, input voltage feed-
forward sense and adaptive voltage positioning to provide
accurately regulated power for desktop CPU. It adopts uPI
proprietary RCOT+TM (Robust Constant On-Time) topology
to have fast transient response and smooth mode
transition. Similar to digital based PWM controller, the loop
gain is also programmable by SMBus interface to achieve
design flexibility.
OCP/UVP/OVP/Thermal Shutdown
RoHS Compliant and Halogen Free
The uP9505 has built-in serial interface to communicate
withAMDSVI2 compliant CPU. It supports mode transition
function with various operating states. This part provides
two different VID on-the-fly slew rates, which can be
programmed by the SMBus register.
Applications
AMD FM2+ Desktop CPU Power Supplies
AMD VGA Card GPU Power Supplies
The uP9505 provides power good indicator and selectable
VR parameters, such as SMBus device address and Vboot
voltage. It also provides complete fault protection functions,
including over voltage, under voltage, over current, over
temperature and under voltage lockout. The uP9505 is
available in VQFN6x6-52L package.
Pin Configuration
39 38 37 36 35 34 33 32 31 30 29 28 27
CSP4 40
CSN4 41
CSP 42
26 EAP
25 FB
24 TP
COMP
CSN 43
23
22
21
20
19
18
17
16
15
14
Ordering Information
TONSET
IMON
CSNA 44
CSPA 45
CSN1A 46
CSP1A 47
CSN2A 48
CSP2A 49
PWROK 50
PWM1A 51
PWM2A 52
Order Number
uP9505PQGW
Package
Remark
IMONA
53 GND
VRHOT#
TSEN
VQFN6x6-52L
TSENA
VINSEN
EN
Note:
(1) Please check the sample/production availability with
uPI representatives.
(2) uPI products are compatible with the current IPC/JEDEC
J-STD-020 requirement. They are halogen-free, RoHS
compliant and 100% matte tin (Sn) p lating that are suitable
for use in SnPb or Pb-free soldering processes.
VCC5
1
2
3
4
5
6
7
8
9
10 11 12 13
uP9505-DS-F0000, June 2017
www.upi-semi.com
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