1FEATURES
2• Fully Configurable Two-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/Out Pins Align 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

DESCRIPTION
The UCD9222 is a two-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 two VID interfaces. Additionally, the UCD9222
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 UCD9222 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.