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SMV-12-500 Datasheet(PDF) 10 Page - Astrodyne Corporation |
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SMV-12-500 Datasheet(HTML) 10 Page - Astrodyne Corporation |
10 / 13 page 500 Watt, High Efficiency, AC/DC Power Modules SMV-500 WWW.ASTRODYNETDI.COM ASTRODYNE USA: 1-800-823-8082 ASTRODYNE PACIFIC: 886-2-26983458 C10,11 (390uF x 2 PCs in parallel; Electrolytic Bulk Capacitors) Boost voltage bulk capacitor is determined by boost voltage ripple voltage, ripple current and hold-up time. Select capacitor value such that boost voltage ripple voltage does not exceed 15Vp-p. Recommended Voltage Rating: 450VDC Recommended Total Capacitor: 390uF to 1,200uF Notes: 1) When ambient temperature is -20ºC or less, AC ripple of boost voltage, output ripple voltage and start-up characteristics might increase or be affected due to ESR characteristics of the bulk capacitors. Therefore, verify above characteristics by actual evaluation. 2) Do not connect capacitors with more than the above capacitance value as this would result in power module damage. C12: 1,000pF (Ceramic “Y” Capacitor): Part of EMI filter. Choose safety approved “Y” capacitor. C13,14: 470uF/50V x 2 PCs in parallel; (220uF/100V for 48V Output) Electrolytic Capacitor: Take note of the maximum allowable ripple current of the electrolytic capacitor used. Especially for sudden load current changes, verify actual ripple current and make sure that allowable maximum ripple current is not to be exceeded. Note: Connect capacitors within 50mm from the output terminals +V and -V of the power module. C15: 2.2uF/100V (Ceramic Capacitor): Connect chip ceramic capacitor within 50mm from the output terminals +V and -V of the power module to reduce output spike noise. Also, note that output spike voltage may vary depending on the wiring pattern of the printed circuit board. C16,17: 0.033uF (Ceramic or Film Capacitor): Connect ceramic or film capacitor as EMI/EMS counter measure and to reduce spike noise. Note: High Voltage is applied across this capacitor during withstand voltage test depending on the applicatiion. Connect these capacitors as near as possible to the output terminals of the power module. L1,2: 6mH: Add common mode choke coil as EMI/EMS counter measure. When using multiple modules, connect coil to each module. Note: Depending on the input filter used, noise might increase or power module might malfunction due to filter resonance. R1: 470KΩ (Bleeder Resistor): Connect bleeder resistor across ACL and ACN terminals. TFR1: 10 to 100Ω: By connecting a thermal fuse resistor across R and +BC terminals as shown in fig. 3, in-rush current during line throw-in can be suppressed. Failures due to in-rush current such as melting of external fuse, welding of relay or switch connecting joints or shutdown of No Fuse Breakers (NFB) can occur. Therefore, be sure to connect this external thermal fuse resistor. Note: This module will not operate without this external resistor. Selection Method of External Resistor TFR1: 1) Calculating Resistance Value for TFR1: Resistance can be calculated by the following formula: R = Vin (Ω) R: Resistance Value for External TFR1 Irush Vin: Input Voltage converted to DC value = Input Voltage (rms) x √2 Irush: Input surge current value 2) Required Surge Current Rating: Sufficient surge current withstand capability is required for external TFR1. Required Surge Current Rating can be selected by I²t. (Current squared multiplied by time) I²t = Co x Vin²(A²s) I²t: Current squared multiplied by time 2 x R Co: Booster Voltage Bulk Capacitance Vin: Input Voltage converted to DC value = Input Voltage (rms) x √2 R: Resistance Value for External TFR1 |
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Similar Description - SMV-12-500 |
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