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SI9102 Dataheets PDF



Part Number SI9102
Manufacturers Vishay Siliconix
Logo Vishay Siliconix
Description 3-W High-Voltage Switchmode Regulator
Datasheet SI9102 DatasheetSI9102 Datasheet (PDF)

Si9102 Vishay Siliconix 3-W High-Voltage Switchmode Regulator FEATURES D 10- to 120-V Input Range D Current-Mode Control D On-chip 200-V, 7-W MOSFET Switch D SHUTDOWN and RESET D High Efficiency Operation (> 80%) D Internal Start-Up Circuit D Internal Oscillator (1 MHz) DESCRIPTION The Si9102 high-voltage switchmode regulator is a monolithic BiC/DMOS integrated circuit which contains most of the components necessary to implement a high-efficiency dc-to-dc converter up to 3 watts. It can either.

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Si9102 Vishay Siliconix 3-W High-Voltage Switchmode Regulator FEATURES D 10- to 120-V Input Range D Current-Mode Control D On-chip 200-V, 7-W MOSFET Switch D SHUTDOWN and RESET D High Efficiency Operation (> 80%) D Internal Start-Up Circuit D Internal Oscillator (1 MHz) DESCRIPTION The Si9102 high-voltage switchmode regulator is a monolithic BiC/DMOS integrated circuit which contains most of the components necessary to implement a high-efficiency dc-to-dc converter up to 3 watts. It can either be operated from a low-voltage dc supply, or directly from a 10- to 120-V unregulated dc power source. This device may be used with an appropriate transformer to implement most single-ended isolated power converter topologies (i.e., flyback and forward). The Si9102 is available in both standard and lead (Pb)-free 14-pin plastic DIP and 20-pin PLCC packages which are specified to operate over the industrial temperature range of −40 _C to 85 _C. FUNCTIONAL BLOCK DIAGRAM FB 14 (20) COMP 13 (18) Error Amplifier DISCHARGE 9 (12) OSC IN 8 (11) OSC OUT 7 (10) OSC 2V − + + − 1.2 V C/L Comparator Clock (1/2 fOSC) Current-Mode Comparator R Q S 3 (5) 5 (8) DRAIN −VIN (BODY) VREF 10 (14) − + 4 V (1%) Ref Gen BIAS 1 (2) Current Sources VCC 6 (9) To Internal Circuits 4 (7) VCC Undervoltage Comparator Q R 11 (16) 12 (17) SOURCE +VIN 2 (3) 8.8 V − + 9.4 V − + S SHUTDOWN RESET Note: Figures in parenthesis represent pin numbers for 20-pin package. Document Number: 70001 S-42040—Rev. G, 15-Nov-04 www.vishay.com 1 Si9102 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Voltages Referenced to −VIN (VCC < +VIN + 0.3 V) VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 V +VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 V VDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 V ID (Peak) (Note: 300 ms pulse, 2% duty cycle) . . . . . . . . . . . . . . . . . . . . . . 2 A ID (rms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 mA Logic Inputs (RESET, SHUTDOWN, OSC IN) . . . . . . −0.3 V to VCC + 0.3 V Linear Inputs (FEEDBACK, SOURCE) . . . . . . . . . . . . . . . . . . . −0.3 V to 7 V HV Pre-Regulator Input Current (continuous) . . . . . . . . . . . . . . . . . . . . . 3 mA Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65 to 125_C Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40 to 85_C Junction Temperature (TJ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150_C Power Dissipation (Package)a 14-Pin Plastic DIP (J Suffix)b . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750 mW 20-Pin PLCC (N Suffix)c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1400 mW Thermal Impedance (QJA) 14-Pin Plastic DIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167_C/W 20-Pin PLCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90_C/W Notes a. Device mounted with all leads soldered or welded to PC board. b. Derate 6 mW/_C above 25_C c. Derate 11.2 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 −VIN VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.5 V to 13.5 V ROSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 kW to 1 MW Linear Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 7 V +VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 V to 120 V fOSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 kHz to 1 MHz Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to VCC SPECIFICATIONSa Test Conditions Unless Otherwise Specified DISCHARGE = −VIN = 0 V VCC = 10 V, +VIN = 48 V RBIAS = 390 kW , ROSC = 330 kW Limits D Suffix −40 to 85_C Parameter Reference Output Voltage Output Impedancee Short Circuit Current Temperature Stabilitye Symbol Tempb Mind Typc Maxd Unit VR ZOUT ISREF TREF OSC IN = − VIN (OSC Disabled) RL = 10 MW Room Full Room 3.92 3.86 15 70 4.0 30 100 0.5 4.08 4.14 45 130 1.0 V kW mA mV/_C VREF = −VIN Room Full Oscillator .


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