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VHK50W-Q24-S12-DIN Datasheet(PDF) 8 Page - CUI INC |
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VHK50W-Q24-S12-DIN Datasheet(HTML) 8 Page - CUI INC |
8 / 9 page cui.com CUI Inc │ SERIES: VHK50W-DIN │ DESCRIPTION: DC-DC CONVERTER date 06/16/2014 │ page 8 of 9 APPLICATION NOTES 1. Output Voltage Trimming Leave open if not used. +Vin R trim-up R-Load Trim +Vo +Sense +Sense -Sense -Sense -Vin -Vo Trim up +Vin -Vin -Vo +Vo R trim-down R-Load Trim Trim down Figure 7 Application Circuit for Trim pin Note: 1. All specifications are measured at Ta=25°C, nominal input voltage and full output load unless otherwise specified. Table 4 Vout (Vdc) R1 (KΩ) R2 (KΩ) R3 (KΩ) Vr (V) Vf (V) 3.3 3 12 18 1.24 0.46 5 2.32 8.2 0 2.5 0 12 9.1 51 18 2.5 0.46 15 12 82 18 2.5 0.46 24 20 100 20 2.5 0.46 28 23.7 150 16 2.5 0.46 48 36 270 14 2.5 0.46 R1(Vr - Vf ( )) Rtrim - up = ( ) - (K) Rtrim - down = - R2 (K) Vo - Vo, nom R2 R2 + R3 R2 + R3 R2R3 R1(Vo - Vr) Vo, nom - Vo Note: R trim-up is the external resistor in KΩ R trim-down is the external resistor in KΩ V O, nom is the nominal output voltage V O is the desired output voltage R1, R2, R3, and Vr are internal (see Table 4). Formula for Trim Resistor For more information, please visit the product page. |
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