The IRS2580DS is the industry

1
Industrys First PFC and Ballast Control IC
Integrated in an 8-Pin SO-8 Package
PRESS RELEASE
DATA SHEET
The IRS2580DS is the industrys 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.
HI-RES GRAPHIC
LIGHTING HOME PAGE

• Features
• 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

• Advantages
• 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 non-strike,
  lamp filament failure and end-of-life.
• The IRS2580DS requires only two primary control
  pins to perform all of the necessary ballast
  functions.

May 2011