Overview
The UCD3138ARJAR is a highly integrated digital controller for isolated power applications, manufactured by Texas Instruments. This controller is designed to offer superior levels of integration and performance, making it suitable for a wide variety of power conversion applications, particularly in the IT and network infrastructure space. The UCD3138ARJAR is based on a 32-bit ARM7TDMI-S RISC microcontroller and features multiple peripherals optimized for AC-DC and isolated DC-DC applications, reducing the overall component count in the system.
Key Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Texas Instruments |
| Package | 40-Pin VQFN |
| Input Voltage | 2.1V |
| Supply Voltage | 3 V to 3.6 V |
| Operating Temperature | –40°C to 125°C |
| Processor | 31.25 MHz, 32-Bit ARM7TDMI-S™ |
| Program Flash | 32KB |
| Data Flash | 2KB with ECC |
| Data RAM | 4KB |
| Boot ROM | 4KB |
| ADC | 14-Channel, 12-Bit, 267-ksps General-Purpose ADC |
| EADC | Up to 16 MHz Error Analog-to-Digital Converter |
| DAC | 14-Bit Effective Digital-to-Analog Converter |
| DPWM Outputs | Up to 8 DPWM Outputs with 250-ps pulse width resolution |
| Communication Peripherals | I²C/PMBus, 1-2 UARTs depending on package |
Key Features
- Fully programmable high-performance 31.25 MHz, 32-Bit ARM7TDMI-S™ processor.
- Digital control of up to 3 independent feedback loops with dedicated PID-based hardware and 2-pole/2-zero configurable compensators.
- 14-Channel, 12-Bit, 267-ksps general-purpose ADC with integrated programmable averaging filters and dual sample and hold.
- Internal temperature sensor and up to 5 additional general-purpose timers).
- Feature-rich fault protection options including cycle-by-cycle current limiting, programmable fault counting, and external fault inputs).
- Synchronization of DPWM waveforms between multiple UCD3138 family devices).
- Support for Fusion Digital Power Studio GUI for configuration and monitoring).
Applications
The UCD3138ARJAR is designed for various power conversion applications, particularly in the IT and network infrastructure space. It is suitable for:
- AC-DC power supplies
- Isolated DC-DC power supplies
- Server and data center power systems
- Telecommunication power systems
- Industrial power supplies
Q & A
- What is the primary function of the UCD3138ARJAR?
The UCD3138ARJAR is a highly integrated digital controller for isolated power applications, designed to manage and control power conversion in various systems.
- What type of processor does the UCD3138ARJAR use?
The UCD3138ARJAR uses a 31.25 MHz, 32-Bit ARM7TDMI-S™ processor.
- What is the operating temperature range of the UCD3138ARJAR?
The operating temperature range is –40°C to 125°C.
- How many DPWM outputs does the UCD3138ARJAR have?
The UCD3138ARJAR has up to 8 DPWM outputs with 250-ps pulse width resolution.
- What communication peripherals are available on the UCD3138ARJAR?
The device includes I²C/PMBus and 1-2 UARTs depending on the package.
- Does the UCD3138ARJAR support synchronization of DPWM waveforms?
- What is the resolution of the general-purpose ADC on the UCD3138ARJAR?
The general-purpose ADC has a 12-bit resolution with a sampling rate of 267 ksps.
- Does the UCD3138ARJAR have built-in fault protection features?
- What development tools are available for the UCD3138ARJAR?
Texas Instruments provides development tools including application firmware, Code Composer Studio™ software development environment, and the Fusion Digital Power Studio GUI.
- What is the package type of the UCD3138ARJAR?
The UCD3138ARJAR is available in a 40-Pin VQFN package.
