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Datenblatt-Suchmaschine für elektronische Bauteile |
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LM393ADR Datenblatt(PDF) 10 Page - Infineon Technologies AG |
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LM393ADR Datenblatt(HTML) 10 Page - Infineon Technologies AG |
10 / 26 page ![]() Application Note 10 <Revision 1.0> <2017-05-22> Eval-M1-CM610N3 iMOTION™ Modular Application Design Kit Schematics and Layout 5 Schematics and Layout To meet individual customer requirements and make the Eval-M1-CM610N3 evaluation board a basis for development or modification, all necessary technical data like schematics, layout and components are included in this chapter. 5.1 DC-Link Voltage Measurement Pin 14 of connector J2 provides access to the DC-link voltage. Three possible feedback cases are associated with this pin. Figure 4 provides the DC bus sense resistor details. By default, the resistor R42 is not mounted on Eval-M1-CM610N3. There must be a pull-down resistor mounted on the corresponding controller board. Figure 4 DC bus sense resistor on Eval-M1-CM610N3 evaluation board If a pull down resistor of 4.87 kΩ referred to ground is inserted either on the Eval-M1-CM610N3 evaluation board or on the control board, the DCBSENSE voltage results in the range of 0 to 3.3 V on the pin reflecting a DC bus voltage range of 0 to 400 V. If a pull down resistor of 4.87 kΩ is inserted on both, Eval-M1-CM610N3 evaluation board and on the control card, the DCBSENSE results scale to 0-1.65 V. No safety issue occurs. If no feedback is desired on the DCBSENSE pin, R35 or R36 should be removed to avoid high voltage on the connector. 5.2 EMI filter and soft power up circuit Figure 5 depicts the schematic from the AC line input connector J1 to the rectified DC bus voltage. This circuitry includes a passive EMI filter consisting of elements CX1, CX2, L1, CY1 and CY2, a 25 A/600 V rectifier block U2, a fuse F1 for inrush current protection, a NTC resistor RT1 and a relay RLY1 for soft powering up and reducing conduction losses in steady state. Two electrolytic capacitors E1 and E2 are used for buffering the rectified DC bus voltage DCP. Figure 5 Schematic for EMI filter and AC/DC section of the Eval-M1-CM610N3 evaluation board DCBSENSE R36 1.00M R35 1.00M DCP R42 4.87K(DNI) CX1 3 1 2 4 RLY1 Q1 R1 1M,1/2W L1 2 3 U2 GBJ2506 R2 91R R3 3.3k D1 CX2 CY2 CY1 C3 10μF C2 4.7μF RT1 NEUTRAL LINE EARTH VCC 1 2 3 J1 CON3 + E1 DCP C1 + E2 F1 8A, 250VAC |
Ähnliche Teilenummer - LM393ADR |
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Ähnliche Beschreibung - LM393ADR |
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