End of Life. Last Available Purchase Date is 31-Dec-2014 Si9110/9111 Vishay Siliconix High-Voltage Switchmode Controllers FEATURES 10- to 120-V Input Range Internal Start-Up Circuit Reference Selection Si9110 1% Current-Mode Control Internal Oscillator (1 MHz) Si9111 10% High-Speed, Source-Sink Output Drive SHUTDOWN and RESET High Efficiency Operation (> 80%) DESCRIPTION The Si9110/9111 are BiC/DMOS integrated circuits designed power. When combined with an output MOSFET and for use as high-performance switchmode controllers. A transformer, the Si9110/9111 can be used to implement high-voltage DMOS input allows the controller to work over a single-ended power converter topologies (i.e., flyback, wide range of input voltages (10- to 120-VDC). Current-mode forward, and cuk). PWM control circuitry is implemented in CMOS to reduce internal power consumption to less than 10 mW. The Si9110/9111 are available in both standard and lead (Pb)-free 14-pin plastic DIP and SOIC packages which A push-pull output driver provides high-speed switching for are specified to operate over the industrial temperature range MOSPOWER devices large enough to supply 50 W of output of 40 C to 85 C. FUNCTIONAL BLOCK DIAGRAM OSC OSC FB COMP DISCHARGE IN OUT 14 13 9 8 7 Error Amplifier OSC To V CC 10 1 Clock ( / f ) V + 2 OSC REF 4 V 2 V Current-Mode 4 Ref Comparator OUTPUT R Gen + Q 5 V IN S + C/L Comparator 1 Current To BIAS Sources Internal 1.2 V 3 SENSE Circuits V CC 6 V CC Undervoltage 11 SHUTDOWN 2 Comparator S +V IN Q 12 + 8.1 V RESET R + 8.6 V Pre-Regulator/Start-Up Document Number: 70004 www.vishay.com S-42037Rev. H, 15-Nov-04 1Si9110/9111 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Voltages Referenced to V (Note: V < +V + 0.3 V) Junction Temperature (T ) 150 C IN CC IN J Power Dissipation (Package)a V . 15 V CC b 14-Pin Plastic DIP (J Suffix) 750 mW +V . 120 V IN c 14-Pin SOIC (Y Suffix) 900 mW Logic Inputs (RESET, Thermal Impedance ( ) JA SHUTDOWN, OSC IN, OSC OUT) . 0.3 V to V + 0.3 V CC 14-Pin Plastic DIP . 167 C/W Linear Inputs 14-Pin SOIC . 140 C/W (FEEDBACK, SENSE, BIAS, V ) . 0.3 V to V + 0.3 V REF CC HV Pre-Regulator Input Current (continuous) . 5 mA Notes a. Device mounted with all leads soldered or welded to PC board. Storage Temperature 65 to 150 C b. Derate 6 mW/ C above 25 C. Operating Temperature . 40 to 85 C c. Derate 7.2 mW/ C above 25 C. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. RECOMMENDED OPERATING RANGE Voltages Referenced to V IN V 9.5 V to 13.5 V R 25 k to 1 M CC OSC +V 10 V to 120 V Linear Inputs 0 to V 3 V IN CC f . 40 kHz to 1 MHz Digital Inputs . 0 to V OSC CC a SPECIFICATIONS Test Conditions D Suffix Unless Otherwise Specified 40 to 85 C DISCHARGEDISCHARGE = = VV = 0 V = 0 V ININ V = 10 V, +V = 48 V CC IN b d c d Parameter Symbol Temp Min Typ Max Unit R = 390 k , R = 330 k BIAS OSC Reference Si9110 Room 3.92 4.0 4.08 OSC IN = V Si9111 Room 3.60 4.0 4.40 IN Output VOutput Voltageoltage VV (OSC Disabled)(OSC Disabled) VV RR Si9110 Full 3.86 4.14 RR = 10 M = 10 M LL Si9111 Full 3.52 4.46 e Output Impedance Z Room 15 30 45 k OUT Short Circuit Current I V = V Room 70 100 130 A SREF REF IN e Temperature Stability T Full 0.50 1.0 mV/ C REF Oscillator e Maximum Frequency f R = 0 Room 1 3 MHz MAX OSC R = 330 k, See Note f Room 80 100 120 OSC Initial AccuracyInitial Accuracy ff kHzkHz OSOSCC R = 150 k, See Note f Room 160 200 240 OSC Voltage Stability f/f f/f=f(13.5 V) f(9.5 V)/ f(9.5 V) Room 10 15 % e Temperature Coefficient T Full 200 500 ppm/ C OSC Error Amplifier FB Tied to COMP Si9110 Room 3.96 4.00 4.04 Feedback Feedback Input VInput Voltageoltage VV OSC IN = OSC IN = V V VV FBFB ININ Si9111 Room 3.60 4.00 4.40 (OSC Disabled) Input BIAS Current I OSC IN = V , V = 4 V Room 25 500 nA FB IN FB Input OFFSET Voltage V Room 15 40 mV OS e Open Loop Voltage Gain A Room 60 80 dB VOL OSC IN = OSC IN = V V ININ e (OSC Disabled) Unity Gain Bandwidth BW Room 1 1.3 MHz e Dynamic Output Impedance Z Room 1000 2000 OUT Source (V = 3.4 V) Room 2.0 1.4 FB Output CurrentOutput Current II mAmA OUOUTT Sink (V = 4.5 V) Room 0.12 0.15 FB Power Supply Rejection PSRR 9.5 V V 13.5 V Room 50 70 dB CC Document Number: 70004 www.vishay.com S-42037Rev. H, 15-Nov-04 2