UCD3138064RJAR

Power Supply Controllers, Monitors Overview

The UCD3138064RJAR is a highly integrated digital power controller from the Texas Instruments UCD3138 family, designed for advanced power management applications. It features 64kB of program flash memory and supports dual memory image execution for firmware updates without shutdown. The device includes up to three independent feedback loops with configurable PID control, an error ADC with up to 16 MSPS sampling rate, and up to eight high-resolution DPWM outputs. Operating within a supply voltage range of 3V to 3.6V, it supports switching frequencies up to 2MHz and offers various modulation modes including phase shift and PWM.

Power Supply Controllers, Monitors Feature Summary

• Dual memory image support enables 'on the fly' firmware updates without shutting down the power supply.
• Digital control of up to three independent feedback loops with dedicated hardware-based PID controllers.
• High-speed error ADC with up to 16 MSPS sampling rate and configurable resolution for precise signal processing.
• Up to eight high-resolution digital pulse width modulated (DPWM) outputs with 250ps pulse width resolution.

Power Supply Controllers, Monitors Applications

• Datacenter server power supplies
• Telecommunications power systems
• Industrial motor drives
• High-efficiency AC-DC adapters

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix RJAR against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure compatibility with existing PCB footprints and thermal requirements. Check for moisture sensitivity levels and recommended reflow profiles during assembly planning. Confirm that the selected variant meets all regulatory compliance standards required for the target application environment.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing systems requiring flexible digital control algorithms and non-disruptive firmware maintenance. Consider the available flash memory size and communication interfaces relative to system complexity. Evaluate the need for multiple independent feedback loops and high-resolution PWM outputs compared to simpler analog or basic digital alternatives. Assess thermal performance within the specified operating temperature range.

Power Supply Controllers, Monitors Part Context

This part belongs to the UCD3138 family of digital power controllers, representing a significant evolution from previous generations like the UCD30xx series. It integrates advanced digital control capabilities with robust memory structures, allowing for complex power stage management in demanding environments. The family is widely recognized for its ability to handle high-frequency switching and provide precise regulation through software-configurable parameters.

Power Supply Controllers, Monitors Replacement Considerations

Direct substitutes within the same family include variants with different memory sizes or packages, such as UCD3138064ARGCT. Verify pinout compatibility and electrical characteristics before substitution. Cross-reference with the manufacturer's obsolescence notices to ensure long-term availability for production runs.

Power Supply Controllers, Monitors FAQ

Does the UCD3138064RJAR support simultaneous execution and programming?

Yes, it features dual memory image support that allows execution from one bank while programming another, enabling firmware updates without power supply shutdown.

What is the maximum switching frequency supported by this controller?

The controller supports adjustable switching frequencies up to 2MHz, depending on the configured modulation mode and DPWM settings.

How many independent feedback loops can be controlled digitally?

The device provides digital control for up to three independent feedback loops, each with dedicated hardware-based PID controllers.