Microcontrollers (MCU)

C2000 real-time control MCUs – Solar & digital power

C2000™ MCUs address the growing need for high efficiency, smaller form factor and adaptability in digitally controlled power electronic converters.

Tools and Designs

Accelerate your power control development by starting with our EVMs or application specific reference designs.

Software

TI software solutions offer fundamental building blocks, example implementations, and a unique set of power design tools.

Training

Learn more about digital power control, specific applications, development tools, or review device specific instructions.

Why digital power?

Digital power management and control capabilities provide real-time intelligence allowing for the development of adaptable high frequency switching power supplies that automatically tune to their environment, improving efficiency and performance. This automatic adjustment allows for changes in input voltage, output load current and system temperature, delivering energy savings with dynamic voltage scaling and advanced control techniques for optimal system performance.

Electric vehicle charging

Higher system efficiency

Sense line and load changes and intelligently varies the power stage operation to optimize efficiency in real time.

System-level integration

Integrated control hardware allows for fewer, smaller devices that perform more complex functions

Low cost & less parts

Devices require fewer components, reducing system cost

Easy & reduced development time

Solutions are simple and speed up your development time

Industry's broadest portfolio

Programmable and fixed-function controllers for high-performance PFC, AC/DC, and isolated DC/DC power supplies

Power topology flexibility

Precise waveform control no matter the topology with high resolution phase control, period control, and duty cycle control

System-level reliability, monitoring, and safety

Robust protection for high power systems by monitoring and controlling power distribution 

Greater power density/faster control loops

Achieve faster operating frequencies and smaller components with high speed processing, feedback, and high resolution PWM control

Digital vs Analog control of Power Systems

Management of a power control topology using integrated circuits vs discrete analog components (See graphic). 

The term digital is used to denote that all external signals are converted from their native analog state to a digital state such they can be operated on by the main controller in the system.

 

Basic power topologies 

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AC-DC (rectifier)

In multiple applications such as telecom, EV chargers and industrial power the energy is sourced from grid. Typically an AC-DC rectifier with power factor correction (PFC) capability is used. This PFC converter can be either single phase or three phase depending on the required output power level. Some typical ways to implement AC-DC rectifier are tabulated below:

Single-Phase Totem Pole CCM PFC
Single-Phase Totem Pole CCM PFC
Single-Phase Totem Pole CrM PFC
Single-Phase Totem Pole CrM PFC
Single Phase PFC
Single Phase PFC
Three-Phase PFC Vienna Rectifier
Three-Phase PFC Vienna Rectifier

AC-DC topologies

Topology
Reference design
End equipment
Key product
Single-Phase Totem Pole CCM PFC Interleaved CCM Totem Pole Bridgeless Power Factor Correction (PFC) Reference Design Industrial Power TMS320F280049 
On board charger (OBC)
Single-Phase Totem Pole CrM PFC Highly Efficient, 1.6kW High Density GaN Based 1MHz CrM Totem-pole PFC Converter Reference Design Telecom & Server Power
Industrial Power
On board charger (OBC)
Single-Phase PFC

2-Phase Interleaved Power Factor Correction Kit with integrated power metering

Telecom & Server Power

TMS320F28035

 

Industrial Power
On board charger (OBC)
Three-Phase PFC Vienna Rectifier Vienna Rectifier-Based Three-Phase Power Factor Correction Reference Design Using C2000™ MCUs Charging Pile

TMS320F28377D

TMS320F280049

 

Industrial Power
Totem-Pole PFC  98.6% Efficiency, 6.6-kW Totem-Pole PFC reference design  On board charger (OBC) TMS320F280049

DC-DC (converter)

Either from the AC/DC rectifier or an existing DC bus there is often need to level shift the DC voltage to match the components in the system and for isolation for safety reasons.  Introducing topology options to maximize the efficiency such as Interleaved LLC, or techniques like phase shedding or valley switching can be important. Some typical DC-DC topologies are shown below:

Interleaved LLC
Interleaved LLC
Phase shifted full bridge
Phase shifted full bridge
Bi-directional DC-DC
Bi-directional DC-DC

DC-DC topologies

Topology
Reference design
End equipment
Key product
Interleaved LLC Two Phase Interleaved LLC Resonant Converter Reference Design Using C2000™ MCUs

Telecom & Server Power

Charging Pile

On board charger (OBC)

Industrial Power

TMS320F28379D
Phase Shifted Full Bridge 600W PSFB with adaptive zero voltage switching (ZVS)

Telecom & Server Power

Charging Pile

On board charger (OBC)

Industrial Power

TMS320F28027
Bi-directional DC-DC Bidirectional 400V-12V DC/DC Converter Reference Design

On board charger (OBC)

Industrial Power

TMS320F28035

DC-AC (inverter)

The final basic topology involves transforming a DC bus into the AC domain, again either a single phase or three phase AC bus depending on the output power requirements.  If the output is tied back to the main AC grid phase matching is crucial to integrate efficiently to the network. 

Single Phase Grid Connected Inverter
Single Phase Grid Connected Inverter
Single Phase Voltage Source Inverter
Single Phase Voltage Source Inverter
Solar micro inverter
Solar micro inverter

Featured C2000 digital power end equipments

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Solar power

Solar power systems integrate multiple power conversion topologies to boost the photo-voltaic DC voltage and either store the energy or invert the voltage to AC for direct use or transmission into the electrical grid. The C2000 MCU platform offers a portfolio of devices and solutions from low cost micro-inverters to high performance grid-tied inverters. 

C2000 solar power diagram

Energy storage systems

Energy storage systems (ESS) help capture the electricity produced by either renewable or non-renewable resources so that it can be used at a later time when required. These systems comprise two main components - the battery and the power conversion sub-system. The power conversion sub-system is made up of a power inverter, a PFC rectifier and a bidirectional DC-DC converter that together help facilitate the exchange of power between the grid, the battery and the AC loads.

Energy storage digital power diagram

Reference designs

Electric vehicles

C2000 MCUs enable advanced technology for EV onboard battery chargers and EV DC/DC converters with precise waveform control regardless of topology.

Minimize energy loss by building platforms that monitor power conversion to and from the battery, as well as improve power conversion efficiencies by single-digit percentage points.

  • DSP performance for 3 phase rectifiers for EV battery charger
  • Integrated sigma deltas for Isolated Current Sensing
  • Co-processors (CLA – control law accelerators) to drive multiple topologies in parallel
  • Trigonometric Math Unit – SINE, COSINE, ARCTAN, DIV operations in 2-3 cycles
Electric vehicle features

Wireless power transfer

Wireless power transfer

Inductive and resonant techniques for transferring power wirelessly are becoming increasingly common. Not only for the charging of personal electronics, but also for direct powering of remote items – such as audio speakers and other consumer electronics - or autonomous battery charging of non-static applications – such as drones and robots, small task oriented vehicles, and  fully electric passenger vehicles.

Benefits of C2000 in wireless power transfer

  • Topology examples for DC-DC and Half/Full Bridge Control
  • powerSUITE software tools and digital power software library
  • Most flexible PWM generation, premium integrated analog, and high-performance processing capability

Digital power software

powerSUITE helps power supply engineers drastically reduce development time as they design digitally-controlled power supplies based on C2000 real-time control MCUs.

Development packages

Libraries, drivers, system examples and powerSUITE tools for digital power techniques, EVMs, and designs. Newest C2000 series are supported through the DigitalPower SDK, older through controlSUITE.

Device features

Over-current and Over-voltage protection

Unexpected faults are a given in most power topologies; the question is how well does the MCU handle them?  Most C2000 MCUs have integrated comparators with direct connections to the PWM modules to change the output to a safe/known state in the event of an over/under current or voltage event. 

Using the built in analog comparators (with self-contained reference voltages) C2000 MCUs can trip any or all PWMs asynchronously and independently to the system task.  Built in hardware lets the user define the amount of time the PWMs are “off” putting the system in a safe state until the over/under event has passed.

Over-current and over-voltage protection diagram

High efficiency switching

Fundamental to any digital power system is ability to control the power FETs in a precise and flexible manner.  Built in features like software programmable High Resolution PWMs with down to 150ps step size give allow for a wide array of settings to conform to a variety of system needs.  With up to 4 different compare modules a wide variety of PWM schemes can be generated.  

High efficiency switching diagram

Valley switching

Specific to Switch Mode Power Supplies is the desire to switch on the MOSFET when the voltage across its drain to source terminals has reached a valley point.  This is known as “Valley Switching” and is important technique to maintain high efficiencies at low loads for some specific type of power converter applications.  Typically this is challenging as it requires external circuits to detect the valley point and then implement variable frequency control.  C2000 MCU with newer Type 4 PWMs have dedicated on-chip hardware to support Valley Switching PWM control.

Valley switching PWM control diagram

Featured reference designs

3 Phase Vienna Rectifier with PFC (AC/DC)

Vienna rectifier power topology is used in high power three phase power factor (AC-DC) applications such as off-board electric vehicleEV chargers and telecom rectifiers.

2 Phase Interleaved LLC (Resonant) Converter

Resonant converters are popular DC-DC converters frequently used in server, telecom, automotive, industrial and other power supply applications.

High Voltage Inverter with Grid Tie Option (DC/AC)

This reference design implements single-phase inverter (DC-AC) control using the C2000™ F2837xD microcontroller.

Single Phase Totem Pole PFC (AC/DC)

Interleaved Continuous Conduction Mode (CCM) Totem Pole (TTPL) Bridgeless Power Factor Correction (PFC) is an attractive power topology with use of high band-gap GaN devices.