Overview
The UCD3138064ARGCR is a highly integrated digital power supply controller from Texas Instruments, offering superior levels of integration and performance in a single-chip solution. This device is part of the UCD3138 family and is designed to enhance the performance of AC/DC and isolated DC/DC applications, particularly in the IT and network infrastructure space. It features a fully programmable 31.25 MHz, 32-bit ARM7TDMI-S processor, allowing customers complete control over their application and the ability to differentiate their solution. The UCD3138064ARGCR is pin-to-pin compatible with the UCD3138 and offers additional communication ports and improved features such as dual firmware banks, automatic baud rate adjustment, and synchronous rectifier dead time optimization.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Processor | 31.25 MHz, 32-bit ARM7TDMI-S | - |
| Program Flash Memory | 64 kB (2-32 kB banks) | - |
| Data Flash | 2 kB with ECC | - |
| Data RAM | 4 kB | - |
| Boot ROM | 8 kB | - |
| General Purpose ADC | 12-bit, 267 ksps, up to 14 channels | - |
| DPWM Outputs | 250 ps pulse width resolution | - |
| Communication Peripherals | 1 I2C/PMBus, 1 I2C (master mode only), 2 UARTs, 1 SPI | - |
| Operating Temperature | -40°C to +125°C | °C |
| Package | 64-pin QFN (9 mm x 9 mm) | - |
Key Features
- Digital control of up to 3 independent feedback loops with dedicated PID-based hardware and 2-pole/2-zero configurable digital compensators.
- Fast, automatic, and smooth mode switching including frequency modulation, PWM, phase shift modulation, and frequency modulation with phase shift modulation.
- High efficiency and light load management features such as burst mode, ideal diode emulation, and synchronous rectifier soft on/off.
- Primary side voltage sensing, flux and phase current balancing, and current share (average & master/slave).
- Feature-rich fault protection options including 7 analog and 4 digital comparators, cycle-by-cycle current limiting, programmable blanking time, and fault counting.
- Synchronization of DPWM waveforms between multiple UCD3138064A devices.
- Internal temperature sensor and fully programmable high-performance processor.
- UART auto-baud rate adjustment and built-in watchdog with BOD and POR.
- Debug interface with Code Composer StudioTM and JTAG interface, along with Fusion Digital PowerTM Designer GUI support.
Applications
- Power supplies and telecom rectifiers.
- Power factor correction (PFC).
- Isolated DC-DC modules.
Q & A
- What is the primary function of the UCD3138064ARGCR?
The UCD3138064ARGCR is a digital power supply controller designed for isolated power applications, offering advanced digital control and high integration.
- What processor does the UCD3138064ARGCR use?
The device uses a 31.25 MHz, 32-bit ARM7TDMI-S processor.
- How much program flash memory does the UCD3138064ARGCR have?
The device has 64 kB of program flash memory, divided into 2-32 kB banks.
- What communication peripherals are available on the UCD3138064ARGCR?
The device includes 1 I2C/PMBus, 1 I2C (master mode only), 2 UARTs, and 1 SPI.
- What are the key features of the DPWM outputs on the UCD3138064ARGCR?
The DPWM outputs have a 250 ps pulse width resolution.
- What is the operating temperature range of the UCD3138064ARGCR?
The operating temperature range is -40°C to +125°C.
- What package options are available for the UCD3138064ARGCR?
The device is available in a 64-pin QFN package (9 mm x 9 mm).
- Does the UCD3138064ARGCR support firmware updates without interrupting power delivery?
Yes, the device allows firmware updates without shutting down the power supply due to its dual firmware bank capability.
- What development tools are available for the UCD3138064ARGCR?
Texas Instruments provides development tools including Code Composer StudioTM, Fusion Power Development GUI, and other application firmware.
- What are some of the fault protection features of the UCD3138064ARGCR?
The device includes 7 analog and 4 digital comparators, cycle-by-cycle current limiting, programmable blanking time, and fault counting.
