TIDA-00117 Reference Design

Texas Instruments

Serial Interface Dual 8-Channel Relay: LED: Stepper Driver

Description

This reference design includes dual DRV8860 and an MSP430 value line MCU to provide 16-channel low side driver for Relays: LEDs: and Unipolar steppers. The solution suports voltage range from 8V to 38V: 200mA current for each channel: parallel outputs: protection of short condition and open load detection. Serial interface and daisy chain connection of DRV8860 give the most benefits on minimum input IOs and extending the output channels easily. An innovative energizing time and internal automatic PWM duty control provide obvious energy saving function especially for relay and solenoid driving. The PWM duty control also can be used for LED brightness control. Full and half step unipolar stepper motor control logic is also included in this design. The drive stage has integrated protection from short-circuit: under voltage: and over-temperature.

Features
  • Serial interface control to minimize the inputs signalDaisy chain connection to extend output channels easily without increasing inputs IOWide VM range from 8V to 38V and 200mA for each channelParallel outputs capability to increase the output currentDiagnosis function by reading back output states and OCP/OL faults through serial interfaceIntegrated protection for short-circuit: over-current: under-voltage: and over-temperature
Applications
  • Actuator
  • HVAC fluid leak detector
  • Multifunction relay
  • Parametric measurement unit (PMU)
  • HVAC valve & actuator control
  • Humanoid
  • AC analog input module
  • Compact relay
  • Residential water heater
Product Categories
  • Motor drivers

Parts

Part Number Name Companion Part
DRV8860 DRV8860 Buy Datasheet
MSP430F2350 MSP430F2350 Buy Datasheet
TPD2E001 TPD2E001 Buy Datasheet

Software

Bill Of Materials

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Schematic

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Design File

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Test Data

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Other Documents

Title Updated Type Size (KB)
TIDA-00117 BOM 15 Nov 2013 PDF 104
TIDA-00117 Schematic 15 Nov 2013 PDF 176