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D12S72C Datasheet(PDF) 6 Page - Delta Electronics, Inc. |
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D12S72C Datasheet(HTML) 6 Page - Delta Electronics, Inc. |
6 / 12 page 6 TEST CONFIGURATIONS Figure 17: Peak-peak output ripple & noise and startup transient measurement test setup Note: 6pcs 560µF OSCON, 4pcs 47µF 1210 MLCC and 20pcs 10uF 1206 MLCC capacitor in the module output. Scope measurement should be made by using a BNC connector. SUPPLY II VI Vo GND Io LOAD DISTRIBUTION LOSSES CONTACT RESISTANCE Figure 18: Output voltage and efficiency measurement test setup Note: All measurements are taken at the module terminals. When the module is not soldered (via socket), place Kelvin connections at module terminals to avoid measurement errors due to contact resistance. % 100 ) ( × × × = Ii Vi Io Vo η Vo Input Cin 1500uF/16V * 2pcs Aluminum Cout SCOPE 10uF/16V * 2pcs MLCC Figure 19: Peak-peak Input ripple & noise measurement test setup Note: 2pcs 1,500µF Aluminum and 2pcs 10µF MLCC in the module input. Scope measurement should be made by using a BNC connector. DESIGN CONSIDERATIONS The power module should be connected to a low ac-impedance input source. Highly inductive source impedances can affect the stability of the module. An input capacitance must be placed close to the modules input pins to filter ripple current and ensure module stability in the presence of inductive traces that supply the input voltage to the module. Safety Considerations For safety-agency approval the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standards. For the converter output to be considered meeting the requirements of safety extra-low voltage (SELV), the input must meet SELV requirements. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. The input to these units is to be provided with a maximum 15A time-delay fuse in the ungrounded lead. FEATURES DESCRIPTIONS Over-Current Protection To provide protection in an output over load fault condition, the unit is equipped with internal over-current protection. When the over-current protection is triggered, the unit will be shutdown and restart by input or OUTEN on/off. The units operate normally once the fault condition is removed. Over-Temperature Protection To provide additional over-temperature protection in a fault condition, the unit is equipped with a thermal shutdown circuit. The shutdown circuit engages when the temperature of monitored component exceeds approximately 121℃. It can be set with latching mode or auto-restart mode by the external digital IC. The shutdown unit will restart by input or OUTEN on/off while the temperature lower than 113℃ (latching mode), or will auto-restart while the temperature lower than 113℃ (auto-restart mode). |
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