SLUUB73
1 Introduction
The UCD3138A64OEVM-662 EVM offers an easy to use test platform for stand-alone evaluation of
UCD3138A64 digital controller optimized for isolated power applications. Featuring an 80-pin socket and a comprehensive set of test points, the EVM allows hardware and firmware engineers to manipulate signals on the different pins of the device individually and study open loop operation. The
EVM also offers the flexibility to realize simple closed loop control configurations (eg. using RC circuits to filter PWM output signals and regulate a DC voltage in closed loop control). Hardware ports available to communicate with the device include PMBus and UART. The EVM accepts up to
5V DC input and an on-board 3.3V LDO can be used to bias the device. Alternately, using jumpers, the device can be biased using the PMBus communication pins.
NOTE: In order to download firmware and program the UCD3138A64 device in
UCD3138A64OEVM-662, a separate EVM from Texas Instruments known as the USB-TO-GPIO
Adapter is required. The USB-TO-GPIO Adapter is NOT supplied with UCD3138A64OEVM-662 and must be purchased separately. The USB-TO-GPIO Adapter serves as a communication interface adaptor or a bridge between a host PC and the UCD3138A64 via a standard type-A to mini-B USB cable. The USB-TO-GPIO Adapter is listed below in the related products section.
2 Description
UCD3138A64OEVM-662 is an EVM board to facilitate evaluation on UCD3138A64PFC digital power controller. This EVM provides hardware needed to evaluate UCD3138A64 80-pin device. All pins of
UCD3138A64PFC are accessible through header connections, including all GPIO pins, ADC12 pins, front end pins, DPWM pins, and Fault pins, etc. Particularly, the board has terminal of PMBus,
UART DB-9 RS232, and JTAG. All headers can be jumped to configure for a particular interested evaluation need.
UCD3138A64 debug
Hardware design assistance
2.2 Features
Test points for easy access to all pins of UCD3138A64 80-pin digital controller
Socket for easy removal/replacement of the device
All GPIO and ADC12 pins accessible (with on-board RC filters on each pin)
Capability to adapt EVM for various evaluation targets using jumpers
Hardware terminals: PMBus, UART, and Logic Analyzer
Includes On-board SPI and I2C accessible EEPROMs for additional memory storage
External 5.0V supply input with onboard 3.3V LDO to bias the device (option to bias device using PMBus port) indicators
Rich test points to facilitate the IC evaluation, system design and circuit and firmware debugging
Board with jumpers to make flexible configuration to adapt various evaluation target
Using the UCD3138A64OEVM-662 4
