CL88030
230 V
AC
OFFLINE LED DRIVER
EVALUATION BOARD USER’S GUIDE
2018 Microchip Technology Inc.
DS50002772A-page 9
Chapter 1. Product Overview
1.1
INTRODUCTION
This chapter provides an overview of the CL88030 230 V
AC
Offline LED Driver Evalu-
ation Board and covers the following topics:
•
•
•
Offline LED Driver Evaluation Board (ADM00860)?
•
Offline LED Driver Evaluation Board Kit Contains
1.2
CL88030 OVERVIEW
The CL88030 driver Integrated Circuit (IC) is a sequential linear LED driver, 4-tap
version, targeted to provide a flexible solution to drive LEDs from AC line voltages up
to 277 V
AC
and at high-output powers.
A sequential linear LED driver is an LED driver, operating from an AC voltage source
and comprised of multiple linear current regulators driving various tap points along a
long string of LEDs connected to the rectified AC. High efficiency is achieved by
shutting off upstream regulators when downstream regulators achieve regulation.
The CL88030 is in a DFN-10 package. The power dissipation for this device is much
lower than the CL8800 or CL88020 one, due to the external FETs. The bottom tab is
not necessary for thermal reasons, but it is necessary to provide 11 electrical
connections for the CL88030.
1.3
CL88030 KEY FEATURES
• Scalable:
- AC line voltage limited only by external FETs
- Output power limited only by external FETs
• No Inductors:
- Reduces BOM cost and circuit complexity
• Efficient Operation:
- Typical electrical efficiencies of 80% to 90% across the AC input voltage
range
• No High Frequencies:
- Inherently low-conducted EMI, no need for input filters
• Inherently Dimmer Compatible:
- Works with most leading-edge and trailing-edge phase-cut dimmers
- Requires no special circuitry to detect and to handle dimmers
- May require an RC network across the AC line to provide adequate TRIAC
latching current
• Two Versions - 4-tap (CL88030) and 6-tap (CL88031):
- Higher taps increase efficiency and lower Total Harmonic Distortion (THD)
- Fewer taps reduce costs
