Thick Film Hybrid IC INCHANGE STK73902 Self-excitation Type Feedback Control Switching Regulator Features ﹒Power MOSFET devices ﹒Feedback control for high output voltage precision ﹒Driver circuit on-chip ﹒Overcurrent protection circuit on-chip ﹒Pin compatible with all other devices in the same series of devices with 110 to 280W power ratings ﹒Higher oscillator frequency allows the use of smaller pulse transformers Package Dimensions unit:mm Applications ﹒CRT/CTV power supplies ﹒Office automation equipment power supplies Block Diagram Pin Functions (1) (2) (3) (4) (5) (6) Amplifier circuit control Ground TR1 gate Drive voltage input Starting voltage input OCP setting level input (7) OCP input-voltage dependency detection input (8) TR1 source (9) TR1 source (11) TR1 drain (12) TR1 drain Thick Film Hybrid IC INCHANGE Specifications Maximum Ratings at Ta=25℃, Tc=25℃ unless otherwise specified Parameter Symbol Conditions Ratings UNIT Operating substrate temperature TC max Recommended value is 105℃ 115 ℃ AC input voltage VAC Specified test circuit 140 Vrms Operating temperature Topr -10 to+85 ℃ Storage temperature Tstg -30 to+115 ℃ Maximum output power Wo max 180 W ID 10 A ID(Pulse) 35 A Specified test circuit VO=135V (TR1) Drain current Pulse drain current Drain reverse current Gate-source voltage Allowable power dissipation Chip junction temperature 10 A VGSS ±30 V PD 100 W Tj max 150 ℃ PZD1 500 mW 125 ℃ IDR (ZD1) Allowable power dissipation Chip junction temperature Tj(ZD1)max Recommended operating ranges at Ta=25℃ Parameter Symbol Pin 4 input voltage V4 Oscillator frequency fOSC Conditions Ratings UNIT ±8 to±24 V 20 to 100 kHz Operating characteristics at Ta=25℃,Tc=25℃ ( unless otherwise specified,specified test circuits) Parameter Symbol Conditions min Typ max UNIT 3.5 5.0 V 0.6 0.9 Ω (TR1) Drain-source breakdown voltage Gate-source cutoff voltage ON resistance Input capacitance ID=1mA,VGS=0V 500 VGS(off) ID=1mA,VDS=10V 2.5 RDS(on) ID=5A,VGS=10V V(BR)DSS Ciss VDS=25V,VGS=0V,f=1MHz VZ IZ=5mA V 1400 pF (ZD1) Zener voltage 23.7 26.3 V Thick Film Hybrid IC INCHANGE Series organization These devices form a series with varying output power ratings Type No. VDSS [V] Tstg [℃] Maximum ratings TC max Tj max [℃] [℃] STK73902 STK73903 Operating characteristics ON resistance Output power [W] [Ω] Input voltage [V] 6.0 STK73905 -30 to +115 STK73906 900 110 1.4 180 0.6 12.0 210 0.55 15.0 280 0.3 3.0 110 5.0 180 3.0 10.0 500 STK73904 STK73907 ID [A] +115 +150 5.0 85 to 132 170 to 264 STK73908 6.0 210 2.0 STK73909 8.0 280 1.2