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TIDA-00737
Capacitor Bank Control and HMI Subsystem Reference Design for Automatic Power Factor Controller
TIDA-00737
Overview
This reference design demonstrates the working of various functional blocks of an automatic power factor controller (PFC) used in MV/LV electrical distribution. This includes accurate measurement and computation of voltages, currents, power and power factor, display of measured parameters using four-digit seven-segment display, alarms and status indication using LEDs, switching outputs for driving contactor or thyristor for switching capacitor banks and monitoring of local and remote temperature using a breadth of products from our portfolio.
Features
- Accurate measurement of 3-Φ voltage, current (simultaneous sampling), power, power factor accuracy < 0.5% achieved using 24-b ΔΣ ADC
- Seven segment (SS) LED – two constant current drivers are cascaded to drive four digit SS LED display with decimal point
- Relay/ transistor output switching – options for controlling contactor and thyristor is provided.
- 3 channels (expandable to 7) is dedicated for controlling relay output (contactors)
- 2 channels (expandable to 4) with isolation for controlling transistor output (thyristors)
- Status indication – 16 LEDs are controlled using a constant-current LED sink driver.
- Sensors for temperature and light sensing are included.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDUB67A.PDF (1974 K)
Reference design overview and verified performance test data
TIDRJL0.PDF (620 K)
Detailed schematic diagram for design layout and components
TIDRJL1.PDF (227 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRJL2.ZIP (202 K)
Detailed overview of design layout for component placement
TIDRJL4.ZIP (3061 K)
Files used for 3D models or 2D drawings of IC components
TIDCBM4.ZIP (1101 K)
Design file that contains information on physical board layer of design PCB
TIDRJL3.PDF (2341 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
MSP430 microcontrollers
MSP430F67791A — Polyphase metering SoC with 7 Sigma-Delta ADCs, LCD, real-time clock, 512KB Flash, 32KB RAM
Data sheetAmbient light sensors
OPT3001 — Digital ambient light sensor (ALS) with high-precision human-eye response
Data sheetDigital isolators
ISO7340C — Low-power, quad-channel, 4/0, 25-Mbps digital isolator
Data sheetDigital temperature sensors
TMP451 — 1.7-V remote and local temperature sensor with N-factor, filtering and series-R correction
Data sheetLED display drivers
TLC59025 — Low-power 16-channel constant-current LED sink driver with 3.0-5.5V supply voltage
Data sheetLED display drivers
TLC5916 — 8-bit constant-current LED sink driver
Data sheetLinear & low-dropout (LDO) regulators
TPS7A4101 — 50-mA, 50-V, low-IQ, adjustable low-dropout voltage regulator with enable
Data sheetLow-side switches
TPL7407L — 40-V, 7-ch NMOS array low-side driver
Data sheetStepper motor drivers
DRV8803 — 60-V, 2.3-A, quad low-side motor driver with PWM control
Data sheetStart development
Technical documentation
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| Type | Title | Date | |
|---|---|---|---|
| * | Design guide | Capacitor Bank Control & HMI with Power Factor Controller Relay Design Guide (Rev. A) | Mar. 09, 2016 |
| Application note | Differences Between MSP430F67xx and MSP430F67xxA Devices (Rev. A) | Jan. 13, 2020 |
Related design resources
Reference designs
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