IRPLDIM2U Datasheet, PDF (1/13 Pages) International Rectifier – Digital Dimming DALI Ballast for 32W/T8 110V input

IRPLDIM2U rev.a
International Rectifier • 233 Kansas Street, El Segundo, CA 90245 USA
Digital Dimming DALI Ballast for 32W/T8 110V input
By
Cecilia Contenti and Tom Ribarich (International Rectifier)
and Ross Fosler (Microchip Technology, Inc.)
FEATURES
• Lamp Type: 1X 32W T8 Lamp
• Line Input: 90-140VAC/60Hz
• Interface DALI (2 wires)
• High Power Factor/ Low THD
• High Frequency Operation
• Programmable Lamp Filament Preheating
• Programmable Ignition
• High precision Digital Dimming
• Logarithmic Dimming
• Diagnostic and fault control
• Lamp Fault Protection
• Brownout Protection
• IR21592 HVIC Ballast Controller
• PIC16F628 Microcontroller
• Optically Isolated Communications
• Low power standby mode
INTRODUCTION
This reference design is a high efficiency, high power factor, digital dimming electronic ballast designed to drive
rapid start fluorescent lamp types. The design contains an active power factor correction circuit for universal
voltage input as well as a ballast control circuit using the IR21592. The design also includes a PIC16F628
microcontroller and an isolation circuit for connecting to a Digitally Addressable Lighting Interface (DALI). Other
features include EMI filtering, transient protection and lamp fault protection.