Datasheet

UCD3138
www.ti.com SLUSAP2F –MARCH 2012–REVISED NOVEMBER 2013
6 Tools and Documentation
The application firmware for UCD3138 is developed on Texas Instruments Code Composer Studio (CCS)
integrated development environment (v3.3 recommended).
Device programming, real time debug and monitoring/configuration of key device parameters for certain
power topologies are all available through Texas Instruments’ FUSION_DIGITAL_POWER_DESIGNER
Graphical User Interface (http://www.ti.com/tool/fusion_digital_power_designer).
The FUSION_DIGITAL_POWER_DESIGNER software application uses the PMBus protocol to
communicate with the device over a serial bus using an interface adaptor known as the USB-TO-GPIO,
available as an EVM from Texas Instruments (http://www.ti.com/tool/usb-to-gpio). PMBUS-based real-time
debug capability is available through the ‘Memory Debugger’ tool within the Device GUI module of the
FUSION_DIGITAL_POWER_DESIGNER GUI, which represents a powerful alternative over traditional
JTAG-based approaches.
The software application can also be used to program the devices, with a version of the tool known as
FUSION_MFR_GUI optimized for manufacturing environments (http://www.ti.com/tool/fusion_mfr_gui).
The FUSION_MFR_GUI tool supports multiple devices on a board, and includes built-in logging and
reporting capabilities.
In terms of reference documentation, the following 3 programmer’s manuals are available offering detailed
information regarding the application and usage of UCD3138 digital controller:
1. UCD3138 Digital Power Peripheral Programmer's Manual Key topics covered in this manual include:
– Digital Pulse Width Modulator (DPWM)
– Modes of Operation (Normal/Multi/Phase-shift/Resonant etc)
– Automatic Mode Switching
– DPWMC, Edge Generation & Intra-Mux
– Front End
– Analog Front End
– Error ADC or EADC
– Front End DAC
– Ramp Module
– Successive Approximation Register Module
– Filter
– Filter Math
– Loop Mux
– Analog Peak Current Mode
– Constant Current/Constant Power (CCCP)
– Automatic Cycle Adjustment
– Fault Mux
– Analog Comparators
– Digital Comparators
– Fault Pin functions
– DPWM Fault Action
– Ideal Diode Emulation (IDE), DCM Detection
– Oscillator Failure Detection
– Register Map for all of the above peripherals in UCD3138
2. UCD3138 Monitoring and Communications Programmer’s Manual
Key topics covered in this manual include:
– ADC12
– Control, Conversion, Sequencing & Averaging
– Digital Comparators
– Temperature Sensor
– PMBUS Addressing
– Dual Sample & Hold
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