High speed digital output PLC module reference design

This high speed digital output module TI Design for programmable logic controllers (PLCs) illustrates the design of low-cost, simple high speed single-ended digital output module using standard low side driver and backplane powered using isolated power stage. High speed digital output modules are required for motor control and positioning application.

Features:

• 4 high speed digital outputs
• External load power
• Single-ended outputs working up to : 500 kHz with 5 V field power, 100 kHz with 24 V filed power
• 210 mW power consumption from backplane isolated power stage
• Less than 100 ns transition time with 15 m cable
• 300 mW power consumption per load for 5 V supply, and 44 Ω load

Parts Include:

DRV8803  2.0A Unipolar Stepper Motor or 1A Quad Solenoid/Relay Driver (PWM Ctrl) 
ISO7140CC    4242-VPK Small-Footprint and Low-Power 4/0 Quad Channel Digital Isolator with Noise Filter 
LM2765    Switched Capacitor Voltage Converter

Learn more by downloading the reference design below