SI9117DY-T1-E3 Vishay, SI9117DY-T1-E3 Datasheet
SI9117DY-T1-E3
Specifications of SI9117DY-T1-E3
Related parts for SI9117DY-T1-E3
SI9117DY-T1-E3 Summary of contents
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... Si9117 is easy to design with and compensate, and takes a minimum of board area to implement: an important benefit in high-volume/small-package applications such as set-top boxes and microcell base stations. circuit power The Si9117 is available in both standard and lead (Pb)-free packages Si9117 12 SHUTDOWN Si9117 Vishay Siliconix Second OUT www.vishay.com 1 ...
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... Si9117 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Voltages Referenced to − (Note: V < 0 Logic Input (SHUTDOWN, SYNC Linear Inputs (FEEDBACK, SENSE, SOFT-START Pre-Regulator Input Current (continuous Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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... See Figure Soft-Start Voltage to Disable Driver Output SS(off 200 DSS 1 DS(on SHUTDOWN V CC DRAIN Vishay Siliconix Limits a b Min Typ Max UVLO 8.8 9.1 9.4 0.1 0.25 0.7 0.18 0.28 0.4 = 100 kHz 1.8 2.5 = 500 kHz 3.7 4.5 1.035 1.16 1.30 ...
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... Si9117 Vishay Siliconix TYPICAL CHARACTERISTICS Output Frequency 1000 OSC 100 pF 150 pF 200 pF 100 10 10 100 R − Oscillator Resistance (k) OSC Supply Current vs. Supply Voltage 250 kHz OUT − Supply Voltage (V) CC Drain-Source On Resistance vs. Temperature 1.2 1.0 0.8 0.6 0.4 −50 − − Temperature (_C) J www ...
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... Temperature (_C) J Document Number: 70027 S-40750—Rev. E, 19-Apr-04 −20 −40 −60 −80 −100 −120 −140 1000 4000 1050 1025 1000 975 950 50 75 100 Vishay Siliconix Reference Voltage vs. Temperature 4020 4010 4000 3990 3980 3970 3960 −50 − Si9117 75 100 www.vishay.com 5 ...
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... Part Number Si9117DY Si9117DY-T1 Si9117DY-T1—E3 Generates a 20-mA current source. IC turns or when capacitor is charged to 4.6 V. Sets the oscillator charging current. Use the “oscillator frequency vs. R section. Sets oscillator frequency. Use the “Oscillator frequency vs. R along with equations 1 and 2 in the Oscillator section of the Description of Operations. ...
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... Disadvantages with this type of circuit include delayed start-up and large required capacitances for guaranteed operation over the full voltage range. The Si9117 overcomes these problems by using low power consumption, BiC/DMOS circuitry, and a unique high-voltage depletion mode MOSFET (see Figure 1). Si9117 Vishay Siliconix − COMP + NI ...
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... Si9117 Vishay Siliconix + −V IN When power is first applied, the depletion transistor is on, and current flows from the input capacitor C capacitor C until V reaches 9.2 V. The converter VCC CC transformer will then supply the V through a bias winding, CC which will raise level higher than 9.2 V. Ideally this will ...
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... These can be prevented with the use of long soft-start times. The soft-start pin can also be used as a non-latching shutdown pin by connecting it to −V soft re-start. FBK NINV Soft- Start Si9117 Vishay Siliconix +OP − TL431 . This approach allows a shutdown with IN + − ...
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... Si9117 Vishay Siliconix Feedback Error Amp V REF 4 FIGURE 4. Soft-Start Oscillator The oscillator circuit uses external timing components internal divide-by-two prevents pulses with greater than T 50% duty cycle, so that core saturation can be avoided. When the R terminal is connected disconnects the oscillator output from the SYNC terminal using ...
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... Synchronization is in master/slave mode, with one device (the “master”) setting the switching frequency and others (the “slaves”) with disabled oscillators locked to it. Alternatively, all devices can be clocked using a master oscillator. (See Figure 8.) Vishay Siliconix 120 k ...
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... Si9117 Vishay Siliconix During slave mode, the unused C pin should be connected to T ground, and the and These pins are used for powering the Si9117 and should consequently be well de-coupled. In selecting the right de-coupling, the MOSFET gate drive requirements should be considered, as the de-coupling capacitor will also have to supply the required peak current ...
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... C transformer, through the MOSFET and Sense resistor, and back into should not be mixed with signals that are controlling a closed-loop, high-gain feedback system which is capable of regulating the output voltage to less than 1 mV. Si9117 Vishay Siliconix L V OUT iL iL iDC ...
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... Si9117 Vishay Siliconix + C ref Si9117DY COMP OSC 3 C OSC 4 SYNC 5 V− filt SENSE filt − R sense FIGURE 13. Choosing the Switching Frequency When selecting the switching frequency usually best to choose the lowest possible frequency that the design solution will accept. In PWM control topologies, the maximum switching frequency will be strongly governed by short circuit behavior ...
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... S-40750—Rev. E, 19-Apr-04 D5 D5SC4M R3 D1 470 W LS4148 R5 180 W C17 2 100 6.8 kW FIGURE 15. Complete Schematic Diagram Vishay Siliconix 10 mH C14 6 R17 180 W R16 22 kW R14 1 kW TCMT1020 C12 100 pF IC3 C11 R18 IC4 TL431CLP R15 22 kW “Y” Grade Capacitor Typically 4.7 nF Si9117 J2 CON4 1 2 ...
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... Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’ ...