TIDA-01636

Power Rail Noise Analyzer Reference Design

TIDA-01636

Design files

Overview

This reference design is an active pass-band filter connected to the analog-to-digital converter (ADC) in a C2000™ microcontroller (MCU). The system senses ripple and noise on the power rail in the band of interest. The Fast-Fourier Transformation (FFT) algorithm analyzes harmonic content of the signal and allows for switching frequency detection. The analysis enables for adaptive real-time switching frequency dithering in high-power applications and better electromagnetic compatibility interference (EMI) control. Alternatively, ripple counters in feedback-less positioners can benefit the design.

Digital Signal Processing (DSP) features of C2000™ microcontrollers play an important role in the system and enable digital-power (on-board chargers, DC-DC converters) and motor control (traction inverters) applications to become smarter and more efficient.

Features
  • Multiple Feedback Filter (MFB) topology
  • Single-supply power
  • Example Firmware for TMS320F28069M C2000

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUE67.PDF (1000 K)

Reference design overview and verified performance test data

TIDRWK4.PDF (125 K)

Detailed schematic diagram for design layout and components

TIDRWK5.PDF (55 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRWK6.PDF (87 K)

Detailed overview of design layout for component placement

TIDRWK8.ZIP (436 K)

Files used for 3D models or 2D drawings of IC components

TIDCER1.ZIP (439 K)

Design file that contains information on physical board layer of design PCB

TIDRWK7.PDF (379 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

C2000 real-time microcontrollers

TMS320F28069MC2000™ 32-bit MCU with 90 MHz, FPU, VCU, CLA, 256 KB flash, InstaSPIN-MOTION

Data sheet document-pdfAcrobat PDF
C2000 real-time microcontrollers

TMS320F28069M-Q1Automotive C2000™ 32-bit MCU with 90 MHz, FPU, VCU, CLA, 256 KB flash, InstaSPIN-MOTION

Data sheet document-pdfAcrobat PDF
High-speed op amps (GBW>=50MHz)

OPA365-Q1Automotive 2.2V, 50MHz, Low-Noise, Single-Supply Rail-to-Rail Operational Amplifier

Data sheet document-pdfAcrobat PDF open-in-new HTML

Start development

Software

Code example or demo

TIDA-01636_Example_Firmware – TIDCER2.ZIP (1433 K)

Technical documentation

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Type Title Date
* Design guide Power Rail Noise Analyzer Reference Design Jun. 19, 2018

Related design resources

Hardware development

EVALUATION BOARD
LAUNCHXL-F28069M C2000 Piccolo MCU F28069M LaunchPad™ development kit

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