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PRIMER ESSENTIALS OUTPUT VOLTAGE LIMITATIONS Typically, overcomin
Top Searches for this datasheetPRIMER ESSENTIALS OUTPUT VOLTAGE LIMITATIONS Typically, overcoming foremost roadblocks successfully reliably applying power "smart-power" involves understanding critical specifications. COLLECTOR CURRENT CE(sus) "CUSP" TIME CE(sat) COLLECTOR VOLTAGE (BR)CBO first device's specified maximum allowable output voltage. Whether maximum load supply voltage (VBB), collector supply voltage (VCC), output voltage (VOUT) value approximates V(BR)CBO. Typically, this absolute maximum rating guaranteed leakage current measurement specified maximum voltage. This limit satisfactory resistive loads some capacitive loads (see figure Should output load line cross sustaining voltage curve, "stored" energy involved. Thus, device damage unlikely although output voltage waveshape aberrations "cusp") during turn-off often occur. second consideration relates specified minimum collector-emitter output) sustaining voltage inductive loads. Many inductive load applications involve substantial stored energy. output load line during turn-off resembles that figure this stored energy cause instantaneous, catastrophic failure device. safe, reliable operation with inductive loads, important (even imperative) that circuit load line intersect sustaining voltage curve. Without proper output voltage limiting clamping, turn-off voltage across output (will usually) exceed device capability! Protection easily accomplished providing: Dwg. GP-047 Figure Load Line with Resistive Load INDUCTIVE LOAD LINE COLLECTOR CURRENT CE(sus) POTENTIALLY DESTRUCTIVE ENERGY diode clamp (usually called "flyback" "recirculating diode") across inductive load, Zener-diode clamp supply ground, snubber network. (BR)CBO CE(sat) COLLECTOR VOLTAGE Dwg. GP-047-1 Figure Load Line with Inductive Load rapid current decay (fast turn-off speeds), using Zener diodes will raise flyback voltage during turn-off improve performance. However, transient/momentary/peak/spike voltage must exceed specified minimum sustaining voltage. PRIMER ESSENTIALS OUTPUT VOLTAGE LIMITATIONS INDUCTIVE LOAD Power supply circuit values chosen such that (supply) (diode forward voltage) (Zener voltage, used) VCE(sus). Further, reliable operation, peak current ratings both flyback Zener diodes must least high load current. Note surge power ratings Zener diodes typically greater than times continuous rating repetitive, low-duty cycle 10%) applications. Dwg. EP-058 OUTPUT VOLTAGE output voltage ratings popular Allegro power drivers follows. Some these sustaining voltage ratings (bold faced) presently appear Allegro data sheets. These specifications will added next revisions. Additional assistance pertaining sustaining voltage issues provided Allegro Applications Engineering. CE(SAT) OUTPUT CURRENT ZENER CLAMP DIODE CLAMP Dwg. WP-001 Figure "Protected" Inductive Load Driver Part Number(s) 2003 2004 2023 2024 2065 2068 2069 2540 2543 2547 2549 2559 2557 Max. VBB, VCC, VOUT, VCEX cont'd Min. VOUT(SUS), VCE(SUS), VCE(sus) Internal clamp diodes Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright 1994, 2001 Allegro MicroSystems, Inc. PRIMER ESSENTIALS OUTPUT VOLTAGE LIMITATIONS Max. VBB, VCC, VOUT, VCEX Min. VOUT(SUS), VCE(SUS), VCE(sus) (use 5841 inductive loads) (use 5842 inductive loads) Internal clamp diodes req'd Part Number 2580 2585 2588 2596 2597 2803 2804 2823 2824 2878 2879 2879-2 2916, 2917, 2918, 2919 2936-120 2944 2961 2962 2981 2982 2983 2984 2985 2987 2998 3951, 3952, 3953 3955 3957 3964 3966 3968 5140 Hall 5800 5801 5804 5821 5822 5841 5842 5890 5891 5895 6219 8902 Maximum allowable supply voltage specified higher. Listed here maximum useful operating voltage defined internal overvoltage shutdown current limiting. www.allegromicro.com PRIMER ESSENTIALS OUTPUT VOLTAGE LIMITATIONS products described here manufactured under more U.S. patents U.S. patents pending. Allegro MicroSystems, Inc. reserves right make, from time time, such departures from detail specifications required permit improvements performance, reliability, manufacturability products. Before placing order, user cautioned verify that information being relied upon current. Allegro products authorized critical components life-support devices systems without express written approval. information included herein believed accurate reliable. However, Allegro MicroSystems, Inc. assumes responsibility use; infringement patents other rights third parties which result from use. Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Other recent searchesPWSN0008JA-B - PWSN0008JA-B PWSN0008JA-B Datasheet MPX2100 - MPX2100 MPX2100 Datasheet MPDS105 - MPDS105 MPDS105 Datasheet M30624MGAFP - M30624MGAFP M30624MGAFP Datasheet LTC2054 - LTC2054 LTC2054 Datasheet LTC2055 - LTC2055 LTC2055 Datasheet KA-3020APBS-Z - KA-3020APBS-Z KA-3020APBS-Z Datasheet IRL520 - IRL520 IRL520 Datasheet 1557810000 - 1557810000 1557810000 Datasheet
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