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SMRT283R3SHR Datasheet(PDF) 4 Page - Crane Aerospace & Electronics. |
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SMRT283R3SHR Datasheet(HTML) 4 Page - Crane Aerospace & Electronics. |
4 / 17 page TRIM TABLES TRIM DOWN Singles R TRIM should be connected between the Trim pin and Positive Sense pin. Duals R TRIM should be connected between the Trim B pin and Positive Vout B pin. This only trims output B, output A can use the sense pin to trim up only. Triples R TRIM should be connected between the Trim A pin and Positive Vout A pin to adjust the Main output. R TRIM should be connected between the Trim B pin and Positive Vout B pin to adjust the Auxiliary outputs. R TRIM = K ( Vout - Vmin ) Vnom - Vout Vout = Desired Voltage; K/Vmin/Vnom come from table below. VNOM KVMIN % OF RATED 3.3 3500 3.18 96 5.0 4520 4.16 83 12 11030 7.05 58 15 12900 7.65 51 1 2 3 4 5 14 13 12 11 10 9 8 SMRT Single Sense Trim 1 2 3 4 5 14 13 12 11 10 9 8 SMRT Dual Vout B Trim B 1 2 3 4 5 14 13 12 11 10 9 8 SMRT Triple Vout A Trim A Trim B +Vout B TRIM UP Singles R TRIM should be connected between the Trim pin and Sense Return pin. Duals R TRIM should be connected between the Trim B pin and Vout B Return pin. This only trims output B, output A can use the sense pin to trim up only. Triples R TRIM should be connected between the Trim A pin and Vout A Return pin to adjust the Main outputs. R TRIM should be connected between the Trim B pin and Vout B Return pin to adjust the Auxiliary outputs. R TRIM = K ( Vmax - Vout ) Vout - Vnom Vout = Desired Voltage; K/Vmax/Vnom come from table below. VNOM KVMIN % OF RATED MIN VIN 3.3 3000 3.70 112 22 5.0 3000 6.26 125 22 12 5300 14.69 122 19 15 5300 18.54 124 22 1 2 3 4 5 14 13 12 11 10 9 8 SMRT Single Sense Return Trim 1 2 3 4 5 14 13 12 11 10 9 8 SMRT Dual Vout B Return Trim B 1 2 3 4 5 14 13 12 11 10 9 8 SMRT Triple Vout A Return Trim A Trim B Vout B Return FIGURE 1: TRIM DOWN DIAGRAMS FIGURE 2: TRIM UP DIAGRAMS Crane Aerospace & Electronics Power Solutions www.craneae.com Page 4 of 17 Rev B – 20080213 SMRT Single, Dual and Triple DC/DC Converters 28 VOLT INPUT – 35 WATT |
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