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Q48SG12034NRFA Datasheet(PDF) 8 Page - Delta Electronics, Inc. |
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Q48SG12034NRFA Datasheet(HTML) 8 Page - Delta Electronics, Inc. |
8 / 27 page DS_Q48SG12034_06272013 8 For parallel application Cin is 100uF low ESR Aluminum cap x 2pcs in parallel; CX1 is 2.2uF ceramic cap×2pcs in parallel; CX2 is 2.2uF ceramic cap; CY1 is 47nF ceramic cap x 2pcs in parallel; CY2 is 47nF ceramic cap x 2pcs in parallel; CY is 3.3nF ceramic cap; L1 is Pulse P0469NL (0.63mH/11.6A) x 2pcs in parallel; L2 is Pulse P0469NL (0.63mH/11.6A) x 2pcs in parallel; Test Result: Vin=48V, Io=68A 1 MHz 10 MHz 150 kHz 30 MHz 10.0 20.0 30.0 40.0 50.0 60.0 70.0 0.0 80.0 dBμV Limits 55022MQP 55022MAV Transducer 8130 Traces PK+ AV The blue line is quasi peak mode and the green one is average mode. DESIGN CONSIDERATIONS Input Source Impedance The impedance of the input source connecting to the DC/DC power modules will interact with the modules and affect the stability. A low ac-impedance input source is recommended. If the source inductance is more than a few μH, we advise adding a 100 to 200 μF electrolytic capacitor (ESR < 0.7 Ω at 100 kHz) mounted close to the input of the module to improve the stability. Layout and EMC Considerations Delta’s DC/DC power modules are designed to operate in a wide variety of systems and applications. For design assistance with EMC compliance and related PWB la yout issues, please contact Delta’s technical support team. An external input filter module is available for easier EMC compliance design. Below is the reference design for an input filter tested with Q48SG120XXXXXX to meet class B in CISSPR 22. Schematic and Components List For Single Module Application Cin is 100uF low ESR Aluminum cap; CX1 is 2.2uF ceramic cap×2pcs in parallel; CX2 is 2.2uF ceramic cap; CY1 and CY2 are 47nF ceramic cap; CY is 3.3nF ceramic cap; L1 and L2 are common-mode inductors, L1=L2=0.47mH; Test Result: Vin=48V, Io=34A 1 MHz 10 MHz 150 kHz 30 MHz 10.0 20.0 30.0 40.0 50.0 60.0 70.0 0.0 80.0 dBμV Limits 55022MQP 55022MAV Transducer 8130 Traces PK+ AV |
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