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IC manufacturers Diodes Incorporated

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reference designAL1788

Diodes Incorporated AL1788

High Power Factor Offline Flyback Controller

Overview

TopologyFlyback Converter
Input voltage100-265 V
IC revisionRev1

Description

The AL1788 is a high performance high Power Factor Corrected (PFC) LED driver controller. It is a Primary Side controller designed for driving the Flyback converter. Based on Valley-ON Quasi-resonant mode, AL1788 is operating at Boundary Conduction Mode (BCM) which is good for EMI. It is universal Flyback solution with high PF and low THD.The AL1788EV1 is designed to serve as an example for High Power Factor AC-to-CV stage used in various consumer and commercial lighting applications.

Features

  • Primary Side Control
  • Universal AC voltage input for CV regulation
  • Valley-on function to achieve low switching loss and high efficiency
  • High Power Factor (PF>0.9) and Low Total Harmonic Distortion (THD<20%) in wide loading conditions
  • Low Standby Power
  • Internal Protections:
  • Under Voltage Lockout (UVLO)
  • Over Voltage Protection (OVP)
  • Over Current Protection (OCP)
  • Output Short Protection (OSP)
  • Over-temperature protection (OTP): Thermal shutdown and auto thermal recovery
  • Low system BOM cost

Typical applications

  • General LED Lighting, Smart Connected LED Light Bulbs, Smart Connected LED Tubes, Panel Lights, Troffers and Ceiling Lights
  • High PFC and low THD power supply

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,30%(A)
RDC typ.(mΩ)
fres(MHz)
VOP(V)
Mount
SamplesAvailability & Sample
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74438357047
SPECWE-MAPI SMT Power Inductor, 4.7 µH, 5.1 A

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
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Downloads10 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance4.7 µH
Performance Rated Current5.1 A
Saturation Current @ 30%8.2 A
DC Resistance39.9 mΩ
Self Resonant Frequency24 MHz
Operating Voltage80 V
MountSMT 
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