International Rectifier (IR) introduced the industry’s first IC to integrate 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.
The IRS2580DS 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 600 V half-bridge control circuit working at 50 percent duty-cycle and variable frequency for driving the resonant mode lamp output circuit.
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. These functions include an analog voltage-to-frequency input pin for programming the different operating frequencies for preheating, igniting and running the lamp, and a PWM output pin for controlling the on and off times during each switching cycle of the PFC boost converter.
Specifications
|
Part Number
|
Package
|
VOFFSET
|
VCC
|
IO+
|
|
IRS2580DS
|
S08
|
600V
|
15.6V
|
180mA
|
Availability and Pricing
Pricing for the IRS2580DS begins at US $1.05 each in quantities of 10,000-units. Production quantities are available immediately. The devices are lead free and RoHS compliant. Prices are subject to change.
