Fully Configurable Four-Output Non-Isolated DC/DC
PWM Controller with support for TMS320C6670™ and
TMS320C6678™ DSP VID interface
Supports Switching Frequencies Up to 2MHz With 250 ps
Duty-Cycle Resolution
Up To 1mV Closed Loop Resolution
Hardware-Accelerated, 3-Pole/3-Zero Compensator with
Non-Linear Gain for Improved Transient Performance
Supports Multiple Soft-Start and Soft-Stop Configurations
Including Prebias Start-up
Supports Voltage Margining and Sequencing
Sync In Pin Aligns DPWM Clocks Between Multiple UCD92xx Devices
12-Bit Digital Monitoring of Power Supply Parameters Including:
- Input Current and Voltage
- Output Current and Voltage
- Temperature at Each Power Stage
- Auxiliary ADC Inputs
Multiple Levels of Over-current Fault Protection:
- External Current Fault Inputs
- Analog Comparators Monitor Current Sense Voltage
- Current Continually Digitally Monitored
Over and Under-voltage Fault Protection
Over-temperature Fault Protection
Enhanced Nonvolatile Memory With Error Correction Code (ECC)
Device Operates From a Single Supply With an Internal Regulator
Controller That Allows Operation Over a Wide Supply Voltage Range
Supported by Fusion Digital Power™ Designer, a Full Featured
PC Based Design Tool to Simulate, Configure, and Monitor
Power Supply Performance.
APPLICATIONS
- Networking Equipment
- Telecommunications Equipment
- FPGA, DSP, and Memory Power

TMS320C6670, TMS320C6678, Fusion Digital Power, Auto-ID are trademarks of Texas Instruments.

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The UCD9244 is a four-rail synchronous buck digital PWM controller designed for non-isolated DC/DC power applications. This device integrates dedicated circuitry for DC/DC loop management with support for up to four VID interfaces. Additionally, the UCD9244 has flash memory and a serial interface to support configurability, monitoring and management.

Several Voltage Identification (VID) modes are supported, including a 4-bit parallel interface, a 6-bit interface and an 8-bit serial interface.

The UCD9244 was designed to provide a wide variety of desirable features for non-isolated DC/DC converter applications while minimizing the total system component count by reducing external circuits. The solution integrates multi-loop management with sequencing, margining and tracking to optimize for total system efficiency. Additionally, loop compensation and calibration are supported without the need to add external components.

To facilitate configuring the device, the Texas Instruments Fusion Digital Power™ Designer is provided. This PC based Graphical User Interface offers an intuitive interface to the device. This tool allows the design engineer to configure the system operating parameters for the application, store the configuration to on-chip non-volatile memory and observe both frequency domain and time domain simulations for each of the power stage outputs.

TI has also developed multiple complementary power stage solutions – from discrete drivers in the UCD7k family to fully tested power train modules in the PTD family. These solutions have been developed to complement the UCD92xx family of system power controllers.

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Technical documentation

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	Type	Title	Date
*	Data sheet	Digital PWM System Controller with 4-bit, 6-bit, or 8-bit VID Support datasheet (Rev. A)	Jan. 31, 2011
	Application note	Digital Loop Exemplified	Sep. 23, 2011
	User guide	Using the UCD92xx Digital Point-of-Load Controller	Apr. 13, 2011

Design & development

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Hardware development

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XDS200 USB Debug Probe

TMDSEMU200-U

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Description

The XDS200 is a debug probe (emulator) used for debugging TI embedded devices. The XDS200 features a balance of low cost with good performance as compared to the low cost XDS110 and the high performance XDS560v2. It supports a wide variety of standards (IEEE1149.1, IEEE1149.7, SWD) in a (...)

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The XDS200 is the mid-range family of JTAG debug probes (emulators) for TI processors. Designed to deliver good performance and the most common features that place it between the low cost XDS110 and the high performance XDS560v2, the XDS200 is the balanced solution to debug TI microcontrollers (...)

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PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)

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Leverages Cadence PSpice Technology
Preinstalled library with a suite of digital models to enable worst-case timing analysis
Dynamic updates ensure you have access to most current device models
Optimized for simulation speed without loss of accuracy
Supports simultaneous analysis of multiple products
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Reference designs

REFERENCE DESIGNS Download

Core voltage ~1.0V at up to 15A for Nyquist uP; 4 of them per UCD9244 plus Test load for one output

PMP6594 — PMP6594 is a UCD9244 digital controller with four UCD74110 drive / power stages for core voltages (~1VDC) with VID requirements. Input can be 5V or 9VDC. VID is where the processor tells the power supply what voltage it wants for its main functions to optimize speed and power loss in the processor (...)