Texas Instruments Evaluation Module for UCD9224 Digital PWM System Controller UCD9224EVM-464 UCD9224EVM-464 데이터 시트
제품 코드
UCD9224EVM-464
User's Guide
SLUU443 – March 2011
UCD9224EVM-464 Digitally Controlled Dual-Rail POL
1
This user guide describes the evaluation module (EVM) for the UCD9224 Digital PWM System Controller
and the UCD7242 Digital Dual Synchronous Buck Power Driver. The UCD9224 is a multi-rail, multi-phase
synchronous buck digital PWM controller designed for non-isolated DC/DC power applications. This
device combines dedicated circuitry for loop management with a microcontroller, flash memory, and a
serial interface to support configurability, monitoring and management. The UCD7242 Dual
Synchronous-Buck Power Driver, the foundation of the PTD08D210W Digital PowerTrain™ module,
simplifies POL rail development by integrating and optimizing many of the power train components (driver,
MOSFETS, current sensing and protection features) needed to realize two voltage phases/rails.
and the UCD7242 Digital Dual Synchronous Buck Power Driver. The UCD9224 is a multi-rail, multi-phase
synchronous buck digital PWM controller designed for non-isolated DC/DC power applications. This
device combines dedicated circuitry for loop management with a microcontroller, flash memory, and a
serial interface to support configurability, monitoring and management. The UCD7242 Dual
Synchronous-Buck Power Driver, the foundation of the PTD08D210W Digital PowerTrain™ module,
simplifies POL rail development by integrating and optimizing many of the power train components (driver,
MOSFETS, current sensing and protection features) needed to realize two voltage phases/rails.
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Description
The UCD9224EVM-464 includes the Digital Power Controller paired with the UCD7242 driver on the
PTD08D210W module to create a power system consisting of two single-phase, point-of-load (POL)
power rails, each capable of up to 10 A of output current.
PTD08D210W module to create a power system consisting of two single-phase, point-of-load (POL)
power rails, each capable of up to 10 A of output current.
For evaluation purposes, the EVM is supplied pre-configured to operate from a 12-V +/- 10% input voltage
source and will produce stepped down voltages of 2.5 V (V
source and will produce stepped down voltages of 2.5 V (V
OUT1
) and 1.2 V (V
OUT2
) without user intervention
once the input voltage has reached the power system’s under-voltage lockout that is set within the
controller.
controller.
The PMBus™ compatible serial data interface included on the EVM allows the user to connect the power
system to a Windows based host computer running the Fusion Digital Power™ Designer software with the
USB Interface Adapter EVM (refer to the Section 5: Test Setup for links to the software and adapter
website and documentation). The UCD9224EVM-464 output rails can then be monitored and controlled or
further configured within the functional limits of the PTD08D210W module (V
system to a Windows based host computer running the Fusion Digital Power™ Designer software with the
USB Interface Adapter EVM (refer to the Section 5: Test Setup for links to the software and adapter
website and documentation). The UCD9224EVM-464 output rails can then be monitored and controlled or
further configured within the functional limits of the PTD08D210W module (V
IN
from 4.5 V to 14.0 V and
V
OUT
from 0.7 V to 3.6 V), refer to document SLUU490 - Using the UCD92xx Digital Point of Load
Controller for additional information.
For power systems requiring the features found in the UCD9224, (up to 2 rails/4 phases but needing
additional phases/rails then), the UCD9246, (up to 4 rails/6 phases), and UCD9248, (up to 4 rails/8
phases), digital controllers are available. Additionally, complex power systems can be implemented with
multiple controllers, all sharing the same PMBus ™ interface, and configured to operate as a complete
power solution.
additional phases/rails then), the UCD9246, (up to 4 rails/6 phases), and UCD9248, (up to 4 rails/8
phases), digital controllers are available. Additionally, complex power systems can be implemented with
multiple controllers, all sharing the same PMBus ™ interface, and configured to operate as a complete
power solution.
2.1
Typical Applications
•
Industrial / Automated Test Systems
•
Telecom / Networking Equipment
•
Servers
•
Storage Systems
•
FPGA, DSP and Memory Systems
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UCD9224EVM-464 Digitally Controlled Dual-Rail POL
SLUU443 – March 2011
© 2011, Texas Instruments Incorporated