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Industry’s First PFC and Ballast Control
IC Integrated in an 8-Pin SO-8 Package
The IRS2580DS is the industry’s first IC to integrated
power factor correction (PFC) and ballast control in a
single compact 8-pin SO-8 package. The new
IRS2580DS Combo8 IC simplifies design and reduces
overall component count to speed up design in energy
efficient lighting applications.
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DATA SHEET
HI-RES
GRAPHIC
LIGHTING
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Features
Advantages
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• The IRS2580D includes a boost converter control circuit operating in
critical-conduction free-running frequency mode to provide power
factor correction with ultra-low THD. The new IC also includes a 600V
half-bridge control circuit working at 50 percent duty-cycle and
variable frequency for driving the resonant mode lamp output circuit.
• Unlike alternative approaches, the IRS2580DS Combo8 IC offers
excellent PFC performance, a high degree of accuracy and ultra-low
THD across a wide line and load range in a single 8-pin package.
• Because two of the eight pins are the primary control pins for the
complete ballast, it provides a simple solution with reduced
component count that significantly speeds up design time.
• Complete fault protection circuitry is also included for protection
against such conditions as mains interrupt or brown-out, lamp nonstrike, lamp filament failure and end-of-life.
• The IRS2580DS requires only two primary control pins to perform all
of the necessary ballast functions.
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PFC, ballast control and half-bridge driver in one IC
Critical-conduction mode boost-type PFC
Internal VBUS sensing and regulation
Internal PFC loop compensation
Programmable PFC over-current
Ignition voltage regulation (current or voltage control)
Half-bridge non-ZVS protection
Half-bridge over-current protection using low-side
MOSFET RDS(on)
Programmable preheat time
Programmable preheat frequency
Programmable ignition ramp time
Programmable run frequency
Voltage-controlled oscillator (VCO) analog input
Latched EOL window comparator on VCC
Internal EOL fault timer
Fixed dead-time (1.7usec typ)
DC bus under voltage reset
Micro-power start-up current
Under-voltage lockout mode
Small 8-pin SOIC package
Lead free
May 2011