uP9504
4/3/2/1+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 uP9504 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. This part integrates 2 bootstrap diode
embedded 12V MOSFET drivers. For the typical 4+2-phase
application, the 4-phase VDD controller has 2 embedded
MOSFET driver and 2 PWM outputs. The 2-phase VDDA
controller 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
2 Integrated 12V MOSFET Drivers for VDD
Embedded Bootstrap Diode
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
The uP9504 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 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
OCP/UVP/OVP/Thermal Shutdown
RoHS Compliant and Halogen Free
The uP9504 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 uP9504 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 uP9504 is
available in VQFN7x7-60L package.
Pin Configuration
45 44 43 42 41 40 39 38 37 36 35 34 33 32 31
CSP3 46
CSN3 47
CSP4 48
CSN4 49
CSP 50
30 PWM3
29 PWM4
28 FBRTN
27 DAC
Ordering Information
26 EAP
CSN 51
25 FB
Order Number
uP9504PQGZ
Package
Remark
CSNA 52
CSPA 53
CSN1A 54
CSP1A 55
CSN2A 56
CSP2A 57
PWROK 58
PWM1A 59
PWM2A 60
24 TP
23 COMP
22 TONSET
21 IMON
20 IMONA
19 VRHOT#
18 TSEN
17 TSENA
16 VINSEN
VQFN7x7-60L
61 GND
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.
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uP9504-DS-F0000, May 2017
www.upi-semi.com
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