BD9215AFV-E2 ROHM

1/4 STRUCTURE Silicon Monolithic Integrated Circuit NAME OF PRODUCT DC-AC Inverter Control IC TYPE FUNCTION 36V High voltage process 1ch control with Full-Bridge Lamp current and voltage sense feed back control Sequencing easily achieved with Soft Start Control Short circuit protection with Timer Latch Under Voltage Lock Out Mode-selectable the operating or stand-by mode by stand-by pin For master IC, Synchronous operating with slave IC BURST mode controlled by PWM and DC input Output liner Control by external DC voltage Absolute Maximum RatingsTa = 25 Parameter Symbol Limits Unit Supply Voltage VCC 36 V BST pin BST 40 V SW pin SW 36 V BST-SW voltage difference BST-SW 15 V Operating Temperature Range Topr -40+85 Storage Temperature Range Tstg -55+150 Maximum Junction Temperature Tjmax +150 * Power Dissipation Pd 1062 mW * Pd derate at 8.5mW/ for temperature above Ta = 25 (When mounted on a PCB 70.0mm70.0mm1.6mm) Operating condition Parameter Symbol Limits Unit Supply voltage VCC 8.530.0 V BST voltage BST 5.037.5 V BST-SW voltage difference BST-SW 5.014.0 V DRIVER frequency FOUT 30110 kHz BCT oscillation frequency fBCT 0.051.00 kHz REV. A 2/4 Electric CharacteristicsTa=25VCC=24VSTB=UVLO=3.0V Limits Parameter Symbol MIN. TYP. MAX. Unit Conditions WHOLE DEVICE Operating current Icc1 5.0 9.0 mA FOUT=60kHz, FB=GND, BST=OPEN Stand-by current Icc2 6.3 20 A STAND BY CONTROL Stand-by voltage H VstH 2 VCC V System Stand-by voltage L VstL -0.3 0.8 V System UVLO BLOCK Operating voltage (UVLO) Vuvlo 2.16 2.25 2.34 V Hesteresis width (UVLO) Vuvlo 0.085 0.110 0.135 V REG BLOCK REG output voltage VREG 7.35 7.50 7.65 V REG source current IREG 20 mA OSC BLOCK RT pin Voltage VRT 1.05 1.50 1.95 V Soft start current ISS 1.7 2.2 2.7 A SS operation start Voltage VSS ST 0.18 0.20 0.22 V SS term END Voltage VSS ED 1.35 1.50 1.65 V SRT ON resistance RSRT 85 170 BOSC BLOCK BOSC Max voltage VBCTH 1.94 2 2.06 V fBCT=0.3kHz BOSC Min voltage VBCTL 0.4 0.5 0.6 V fBCT=0.3kHz BOSC constant current IBCT 1.35/BRT 1.5/BRT 1.65/BRT A VBCT=0.2V BOSC frequency fBCT 291 300 309 Hz (BRT=37.8k BCT=0.047F) FEED BACK BLOCK IS threshold voltage 1 VIS1 1.225 1.25 1.275 V IS threshold voltage 2 VIS2 VREFIN VIS1 V VREF applying voltage VS threshold voltage VVS 1.22 1.25 1.28 V IS source current 1 IIS1 0.9 A DUTY=2.2V IS source current 2 IIS2 40 50 60 A DUTY=0V IS=1.0V VS source current IVS 0.9 A IS COMP detect voltage 1 VISCOMP1 0.606 0.625 0.644 V VREFIN1.25V IS COMP detect voltage 2 VISCOMP2 0.50 V VREFIN= 1V VREF input voltage range VREFIN 0.6 1.6 V No effect at VREF1.25V DUTY BLOCK High voltage 3.8 4.0 4.2 V VDUTY-OUTH Low voltage - 0.5 V VDUTY-OUTL DUTY-OUT sink resistance 150 300 RDUTY-OUT sink DUTY-OUT source resistance 300 600 RDUTY-OUT source OUTPUT BLOCK LN output sink resistance RsinkLN 1.8 3.5 7.0 LN output source resistance RsourceLN 4.5 9.0 18.0 HN output sink resistance RsinkHN 1.8 3.5 7.0 VBST-VSW=7.0V HN output source resistance RsourceLN 4.5 9.0 18.0 VBST-VSW=7.0V MAX DUTY MAX DUTY 46.0 48.5 49.5 % FOUT=60kHz OFF period TOFF 100 200 400 ns Drive output frequency FOUT 57.9 60 62.1 kHz RT=21k TIMER LATCH BLOCK Timer Latch setting voltage VCP 3.88 4.0 4.12 V Timer Latch setting current ICP 1.6 2.1 2.6 A COMP BLOCK COMP over voltage detect voltage VCOMPH 3.88 4.0 4.12 V VSS1.65V Hysterisis width (COMP) VCOMPH 0.15 0.20 0.25 V ((Synchronous Block)) High voltage VCT SYNCH 3.8 4.0 4.2 V Low voltage VCT SYNCL 0.5 V CT SYNC OUT sink resistance 150 300 RSYNC OUT sink CT SYNC OUT source resistance 300 400 RSYNC OUT source This product is not designed to be radiation-resistant. REV. A