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Reverse buck 35W, LED current controlled by HVLED002 with analog/PWM dimming adjustment

EVAL-IBD002-35W

 
Overview

This document describes the EVAL-IBD002-35W demonstration board behavior, designed to manage a dimmable 35 W LED load with a single inverse buck stage.

The HVLED002 controller manages the inverse buck circuitry mainly composed by D1, L1 and Q1 components, able to provide around 700 mA as maximum LED load current.
An external 0-10 V signal is dedicated to managing a dimmed output LED current between 1%-100% of its maximum value with both Analog (100%-10%) and PWM (10%-1%) control.
A 15 Vdc of auxiliary voltage is needed to power up the HVLED002 controller.

Main features

  • Input voltage: Vin: 48 Vdc-60 Vdc; Vaux:15 Vdc.
  • LED output voltage: 24 Vdc-48 Vdc
  • Maximum LED output current: 700 mA
  • Dimming: between 1%-100%
  • No-load: lower than 50 mW @ 60 Vindc
  • Efficiency:
    • Full load: >97%
    • Load over 20% (analog dimming): > 95%
  • Output Ripple Current:
  • Short-circuit protection
  • PCB board: 50 mm x 50 mm single-side PCB
  • RoHS compliant
参考设计图片
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HVLED002 semiconductor;Other integrated circuit (IC) LED Lighting Drivers IND. & POWER CONV. Download
 
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