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AEQ75Y48 Datasheet(PDF) 8 Page - Astec America, Inc |
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AEQ75Y48 Datasheet(HTML) 8 Page - Astec America, Inc |
8 / 2 page Technical Reference Notes AEQ75Y48 Series (Single Output Quarter Brick) MODEL: AEQ75Y48 SERIES SHEET 8 OF 12 JULY 21, 2005 - REVISION 01 Basic Operation and Features (continued) OUTPUT ENABLE The converter comes with an Enable pin (PIN 2), which is primarily used to turn ON/OFF the converter. Both a Positive (no part number suffix required) and a Negative (suffix “N” required) Enable Logic options are being offered. Please refer to Table 2 for the Part Numbering Scheme. For Positive Enable, the converter is turned on when the Enable pin is at logic HIGH or left open. The unit turns off when the Enable pin is at logic LOW or directly connected to -VIN. On the other hand, the Negative Enable version turns unit on when the Enable pin is at logic LOW or directly connected to -VIN. The unit turns off when the Enable pin is at Logic HIGH. OUTPUT OVER VOLTAGE PROTECTION (OVP) The Over Voltage Protection circuit comes in shutdown mode. The output of the converter is terminated under an OVP fault condition (Vo > OVP threshold). The converter will automatically recover once the fault condition is removed. OVER CURRENT PROTECTION (OCP) The Over Current Protection circuit comes in shutdown mode. The converter shuts down once the output current reaches the OCP range. The converter will automatically recover once the fault condition is removed. OVER TEMPERATURE PROTECTION (OTP) The Over Temperature Protection circuit will shutdown the converter once the average PCB temperature reaches the OTP range. This feature prevents the unit from overheating and consequently going into thermal runaway, which may further damage the converter and the end system. Such overheating may be an effect of operation outside the given power thermal derating conditions. Restart is possible once the temperature of the sensed location drops to less than 110 °C. |
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