uP9503Q
3/2/1+2/1/0-Phase Driver Embedded PWM Controller
with SMBus Digital Interface for FM2+ CPU Core Power
Features
General Description
AMD SVI2 CPU Compliant
RCOT+TM Control Topology
The uP9503Q is an AMD SVI2 compliant desktop CPU
voltage regulator controller that integrates a 3-phase PWM
controller for VDDand a 2-phase controller for VDDA. The
VDDcontroller can be configured as 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. This part integrates 2 bootstrap diode
embedded 12V MOSFET drivers. For the typical 3+2-phase
application, the 3-phase VDD controller has 2 embedded
MOSFET driver and 1 PWM output. The 2-phase VDDA
controller has 2 PWM outputs. The controller provides further
flexible operating phase configurations to support 4+1 phase
application.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
2 Integrated 12V MOSFET Drivers for VDD
Embedded Bootstrap Diode
Flexible Operation Phase Configuration
3/2/1-Phase PWM Controller for VDD
2/1/0-Phase PWM Controller for VDDA
Support Operation Phase Disable Function
Support 4+1 Phase Application
SVI2 VR Address Selection
SMBus Interface for Performance and Efficiency
Optimization
Dynamic Programmable VR Parameters
Programmable Protection Thresholds
VR Output Reporting
The uP9503Q 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.
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 uP9503Q 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.
OCP/UVP/OVP/Thermal Shutdown
RoHS Compliant and Halogen Free
Applications
The uP9503Q provides power good indicator and selectable
VR parameters, such as SVI2 VR 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 uP9503Q is
available in VQFN6x6-52L package.
AMD FM2+ Desktop CPU Power Supplies
AMD VGA Card GPU Power Supplies
Pin Configuration
39 38 37 36 35 34 33 32 31 30 29 28 27
CSN2 40
CSP3 41
CSN3 42
CSP 43
26 PWM3
25 FBRTN
24 DAC
Ordering Information
Order Number
uP9503QQGW
Package
Remark
23 EAP
CSN 44
22 FB
VQFN6x6-52L
CSNA 45
CSPA 46
CSN1A 47
CSP1A 48
CSN2A 49
CSP2A 50
PWROK 51
PWM1A 52
21 COMP
20 TONSET
53 GND
Note:
19
18
17
16
15
14
IMON
IMONA
VRHOT#
TSEN
TSENA
EN
(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.
1
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10 11 12 13
uP9503Q-DS-F0000, June 2017
www.upi-semi.com
1
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