L6598 High voltage resonant controller Datasheet - production data Sense op amp for closed loop control or protection features High accuracy current controlled oscillator Integrated bootstrap diode Clamping on Vs Available in DIP16 and SO16 packages 62 1 ,3 Description The L6598 device is manufactured with the BCD offline technology, able to ensure voltage Features ratings up to 600 V, making it perfectly suited for AC/DC adapters and wherever a resonant High voltage rail up to 600 V topology can be beneficial. The device is intended dV/dt immunity 50 V/ns in full temperature to drive two power MOSFETs, in the classical half range bridge topology. A dedicated timing section allows Driver current capability: 250 mA source the designer to set soft-start time, soft-start and 450 mA sink minimum frequency. An error amplifier, together with the two enable inputs, are made available. In Switching times 80/40 ns rise/fall with 1 nF load addition, the integrated bootstrap diode and the CMOS shutdown input Zener clamping on low voltage supply, reduces to Undervoltage lockout a minimum the external parts needed in the applications. Soft-start frequency shifting timing Figure 1. Block diagram 9 6 + 9 9 03 23 %227 23287 +9* 89 %227675 3 +9* 23,1 & %227 (7(&7,21 5,9(5 5,9(5 23,1 /2 287 ,IPLQ 9 5() /(9(/ 9V ( 5,9,1* 6+,)7(5 7,0( /2*,& * 9* 5,9(5 / 5IPLQ ,IVWDUW 9 *1 5() 9WKH (1 9WKH 5IVWDUW &21752/ /2*,& (1 ,VV 9&2 &I &VV 0 Y November 2013 DocID6554 Rev 8 1/23 This is information on a product in full production. www.st.com /9 Contents L6598 Contents 1 Maximum ratings 3 2 Electrical characteristics . 4 3 Pin connections . 6 4 Timing diagrams 7 5 Block diagram description 9 5.1 High/low side driving section . 9 5.2 Timing and oscillator section . 9 5.3 Bootstrap section . 13 5.4 Op amp section 14 5.5 Comparators . 15 6 Package information 19 7 Ordering codes 22 8 Revision history . 23 2/23 DocID6554 Rev 8