IR21593STR

Product Summary

The IR21593STR is an half-bridge driver all in one IC. The architecture includes phase control for transformer- less lamp power sensing and regulation which minimizes changes needed to adapt non-dimming ballasts for dimming. The IR21593STR features such as preheat time and current, ignition-to-dim time, and a complete dimming interface with minimum and maximum settings provide a high degree of flexibility for the ballast design engineer.

Parametrics

IR21593STR absolute maximum ratings: (1)VB High side floating supply voltage: -0.3 to 625V; (2)VS High side floating supply offset voltage: VB - 25 to VB + 25V; (3)VHO High side floating output voltage: VS - 0.3 to VB + 0.3V; (4)VLO Low side output voltage: -0.3 to VCC + 0.3V; (5)IOMAX Maximum allowable output current (either output): -500 to 500V; (6)VVCO Voltage controlled oscillator input voltage: -0.3 to 6.0 V; (7)ICPH CPH current: -5 to 5 mA; (8)VIPH IPH voltage: -0.3 to 5.5V; (9)VDIM Dimming control pin input voltage: -0.3 to 5.5V; (10)VMAX Maximum lamp power setting pin input voltage: -0.3 to 5.5V; (11)VMIN Minimum lamp power setting pin input voltage: -0.3 to 5.5V; (12)VCS Current sense input voltage: -0.3 to 5.5V; (13)ISD Shutdown pin current: -5 to 5mA; (14)ICC Supply current: 25mA; (15)dV/dt Allowable offset voltage slew rate: -50 to 50 V/ns; (16)PD Package power dissipation @ TA ≤ +25°C (16 pin DIP): 1.60W; (17)PD = (TJMAX-TA)/RthJA (16 pin SOIC): 1.25W; (18)TJ Junction temperature: -55 to 150°C; (19)TS Storage temperature: -55 to 150°C.

Features

IR21593STR features: (1)Ballast control and half-bridge driver in one IC; (2)Transformer-less lamp power sensing; (3)Closed-loop lamp power control; (4)Closed-loop preheat current control; (5)Programmable preheat time; (6)Programmable preheat current; (7)Lamp ignition detection; (8)Programmable ignition-to-dim time; (9)0.5 to 5VDC dimming control input; (10)Min and max lamp power adjustments; (11)Programmable minimum frequency; (12)Internal current sense blanking.

Diagrams