viper31sp STMicroelectronics, viper31sp Datasheet
viper31sp
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viper31sp Summary of contents
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... January 1998 BATTERY CHARGER PRIMARY I.C. R DS(on) 6.5 10 Power SO-10 DESCRIPTION VIPer31SP combines on the same silicon chip a PWM control dedicated to regulation together with an optimised high voltage avalanche rugged vertical power MOSFET (600V/1A). Typical applications cover battery chargers with constant current and constant voltage output ...
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... VIPer31SP ABSOLUTE MAXIMUM RATING Symb ol Parameter V Continuous Drain-Source Voltage ( 125 DS I Maximum DC Drain Current D I Reverse DC Drain Current DREV V Supply Voltage CC V Voltage Range Input (CSENSE, COMP OSC, CREF Current Input (CSENSE SC, CREF X I Current Range Input (DSENSE) ...
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... It delivers a start up current of 1.5mA during the shut down phase. The V pin is also connected internal 10V low drop regulator which provides the V voltage. DD VIPer31SP C PIN: SENSE Receives the voltage of the current sense resistor, representative from the power MOSFET drain current. C PIN: ...
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... VIPer31SP ELECTRICAL CHARACTERISTICS (T POWER SECTION Symb ol Parameter BV Drain-Source Voltage DSS D I Off-State Drain Current V DSS DS R Static Drain Source 0.3 A DS( on) D Resistance 100 J t Fall Time (see fig Rise Time (see fig Output Capacitance ...
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... Test Cond ition s Min. 320 = 10 mA (see fig. 6) Test Cond ition s Min (see fig (see fig (see fig (see fig. 7) 150 VIPer31SP Typ . Max 2 TBD 400 KHz ...
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... VIPer31SP Figure 1: Switching Times Tr VDS 2.VIN tf VIN ID td VCREF RS Figure 3: Switching Frequency Setting Oscillator frequency vs Rt and Ct 1,000 500 300 Ct = 1.5 nF 200 Ct = 2.7 nF 100 6/16 Figure 2: UVLO Logic Behaviour ICC ICC0 VDDhyst VDDoff VDDon t ICCch ...
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... Figure 5: Reference Voltage Measurement 6 VCC 8 VDD 8.2k 2 OSC 4.7uF 16V VIPer31 12V 3.3nF PHASE 1k 10k 100k Frequency (Hz COMP DSENSE - CURRENT CONTROL + 2.6V VOLTAGE CONTROL GND CREF CSENSE Vreg VIPer31SP ( ) 200 150 100 50 0 -50 -100 -150 1M 10M SC12060 11 DRAIN SOURCE 5 SC12070 7/16 ...
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... VIPer31SP Figure 6: Demagnetisation Control Logic VDD 10 A DSENSE - VAUX + S Q VDSENSEth VCC R VDSENSEcl AUXILIARY WINDING GND Figure 7: Overvoltage Protection VCC VC Clim VCChyst VCREF ID SC12090 8/16 DRAIN VAUX FROM VDSENSEth PWM LATCH EOD EOD Q 1 SOURCE 0 Figure 8: Overtemperature Protection Tj Tsd ID t VDD ...
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... SC12110 BR1 - + STPS1100U 1A/600V C2 T2 10uF 400V 22k 680k 2.2n 1nF COMP DSENSE DRAIN R7 - 680k CURRENT CONTROL + CREF CSENSE SOURCE 470 R11 1.3 C10 470nF SC12130 VIPer31SP Constant voltage operation (+/-7 Uout (V) SC12120 D1 IOUT C3 330uF 25V GND C6 2.2nF 9/16 ...
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... VIPer31SP OPERATION DESCRIPTION : This device is intended to be used in off line AC/DC adapter where the desired output characteristic must present a rectangular characteristic. For output voltage values lower than a fixed value, the average output current must be constant, whatever are the input or output voltages. If the output current consumed ...
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... primary feedback, the accuracy of the output voltage depends transformer coupling quality. This is especially VIPer31SP with a transformer ratio figure 10 shows a obtained with ...
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... VIPer31SP true for low output current where the output voltage can reach high values, as shown on figure can be reached for a nominal regulated one of 14.5 V, with a typical transformer. But a simple clamping zener can limit it to about 17 V with a reasonable dissipated power. The 100 % output load regulation is better than +/-7 % ...
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... CREF pin voltage, or the internal current limitation of 1.3 A. These values together with the low value of start-up duty cycle prevents the stress of the output rectifiers and of the transformer when in short circuit. t Average output current t SC12160 VIPer31SP VCC VDD tss t SC12150 13/16 ...
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... VIPer31SP OVERVOLTAGE PROTECTION If the output voltage accuracy is not a concern, but only a limitation is desired, the internal overvoltage protection can be used. In this case, five components can be taken out from the schematics of figure 10 (R3-R10-R6-C4-C5) and the input pin FB of the error amplifier is simply grounded. The internal overvoltage protection will ...
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... B 0. SEATING PLANE SEATING PLANE A1 L DETAIL ”A” VIPer31SP MAX. 0.144 0.004 0.024 0.022 0.378 0.300 0.374 0.291 0.300 0.250 0.240 0.053 0.567 0.071 0068039-C 15/16 ...
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... VIPer31SP Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice ...