UCD3138A64PFCR

Overview

The UCD3138A64PFCR is a highly integrated digital power controller from Texas Instruments, designed for isolated power conversion applications. It features a 32-bit ARM7TDMI-S processor with 64kB of program flash memory and supports dual memory image execution for on-the-fly firmware updates without shutting down the power supply. The device includes up to eight high-resolution digital pulse-width modulated (DPWM) outputs with 250ps pulse width resolution and an error analog-to-digital converter (EADC) operating at up to 16MSPS. It provides digital control for up to three independent feedback loops using dedicated PID hardware.

Feature Summary

• Supports digital control of up to three independent feedback loops with dedicated PID-based hardware
• Enables firmware updates without interrupting power delivery through dual memory image support
• Integrates high-speed error ADC and high-resolution DPWM outputs for precise control
• Includes additional communication ports such as SPI and extra I2C interfaces

Applications

• Power and telecom rectifiers
• Isolated DC/DC modules
• Power factor correction circuits

Procurement Notes

Verify the specific package type and temperature rating against the official datasheet before procurement. Confirm that the selected variant meets the required thermal and electrical specifications for the target application environment. Ensure compatibility with existing development tools and firmware libraries provided by the manufacturer.

Selection Notes

Select this component when designing systems requiring multi-loop digital control and flexible firmware management. Consider the 64kB flash capacity for complex control algorithms and the need for non-disruptive field updates. Evaluate the integration of communication interfaces and high-speed ADC capabilities against system performance requirements.

Part Context

This part belongs to the UCD3138x family of digital power controllers, which are designed to replace traditional analog controllers in high-performance power supplies. The UCD3138A64 variant specifically offers 64kB of program flash, distinguishing it from other members of the series with different memory capacities or pin counts.

Replacement Considerations

UCD3138A64OEVM-662 is an evaluation module for the UCD3138A64, not a direct replacement. Verify cross-compatibility with other UCD3138 variants based on memory size and package dimensions.