Overview

The ISL78171EVAL1Z evaluation board is used to evaluate the ISL78171 6-Channel, 50mA automotive LED driver with ultra-high dimming ratio and phase shift control. This board is populated with 60 LEDs in 6P10S (six parallel strings, each string consisting of 10 LEDs in series) configuration to simplify evaluation and testing. The device can function with or without an I2C controller. If it is required to use I2C control for the ISL78171EVAL1Z board, use a generic I2C interface adapter (not supplied with the evaluation board kit) for the purpose of communication. Note that the slave address on the ISL78171 is hexadecimal 58. Refer to the user's guide for jumper settings and power-up instructions

ISL78171EVAL1Z Automotive LED Driver Eval Board
ISL78171EVAL1Z Automotive LED Driver Eval Board
  • Integrated 40V boost converter
  • 6 precision current sinks, up to 50mA each
  • Current matching ±0.7% typical
  • Dimming modes: DC, internal PWM, direct PWM, DC + Int/Dir PWM
  • Typical dimming ratio exceeding 60,000:1 for DC + Int/Dir PWM
  • Phase shift control for internal PWM dimming
  • 600kHz/800kHz/1.2MHz I2C selectable switching frequency
  • Dynamic headroom control

Applications

  • Infotainment display LED backlighting
  • LCD monitor LED backlighting
  • Field sequential RGB LED backlighting

Documentation

= Featured Documentation
Type Title Date
Manual - Development Tools
ISL78171EVAL1Z User Guide
PDF 868 KB
Datasheet
ISL78171 Datasheet
PDF 1.60 MB
2 items

Design & Development

Software Downloads
Type Title Date
PCB Design Files
ISL78171EVAL1Z Design Files
ZIP 1.28 MB
1 item

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