Delta Electronics 20A manual

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Table of contents for the manual

  • Page 1

    Delphi NE Series Non-Isolated Point of Load DC/DC Modules: 4.5V~13.8V in, 0.59V~5.1V out, 20A The Delphi NE 20A Series, 4.5 to 13.8V wide input, wide trim single output, non-isolated point of load DC/DC converters are the latest offering from a world leader in po wer systems techn ology and manufacturing — Delt a Electronics, Inc. The ND/NE prod [...]

  • Page 2

    Preliminary DS_NE1 2S20A_07272007 2 TECHNICAL SPECIFICA TIONS (Ambient T emperature=25°C, m inimum airflow=200LFM, nominal V in =12Vdc unless ot herwise specified.) PA R A M E T E R NOTES and CONDITIONS NE12S0A0V/H20 Min. T yp. Max. Units ABSOLUTE MAXIMUM RA TINGS Input V oltage operation 4.5 13.8 Vdc Operating T emperature (V ertical) Refer to Fi[...]

  • Page 3

    Preliminary DS_NE1 2S20A_07272007 3 ELECTRICAL CHARACTERISTICS CUR VES 55 60 65 70 75 80 85 90 95 1 2 4 6 8 1 01 21 41 61 82 0 Output current (A) Efficiency (%) 55 60 65 70 75 80 85 90 95 1 2 4 6 8 10 12 14 16 18 20 Output current (A) Efficiency (%) Figure 1: Converter efficiency vs. output current (0.59V output voltage, 12V input) Figure 2: Conver[...]

  • Page 4

    Preliminary DS_NE1 2S20A_07272007 4 ELECTRICAL CHARACTERISTICS CUR VES (CON.) Figure 7: Output ripple & noise at 12Vin, 0.59V/20A out Figure 8: Output ripple & noise at 12V in, 0.9V/20A out Figure 9: Output ripple & noise at 12V in, 1.5V/20A out Figure 10: Output ripple & noise at 12Vin, 2.5V/20A out Figure 1 1: Output ripple & [...]

  • Page 5

    Preliminary DS_NE1 2S20A_07272007 5 ELECTRICAL CHARACTERISTICS CUR VES (CON.) Figure 13: T urn on delay time at 12Vin, 0.59V/20A out Ch1: Vin, Ch4: V out Figure 14: T urn on delay time Remote On/Off, 2.5V/20A out Ch1: Enable, Ch4: V out Figure 15: T urn on delay time at 12Vin, 3.3V/20A out Ch1: Vin, Ch4: V out Figure 16: T urn on delay time at Remo[...]

  • Page 6

    Preliminary DS_NE1 2S20A_07272007 6 DESIGN CONSIDERA TIONS The NE12S0A0V(H)20 uses a single phase and volt age mode controlled buck topology . The output can be trimmed in the range of 0.59Vdc to 5.1Vdc by a resisto r from T rim pin to Ground. The converter can be turned ON/OFF by remote control with positive on/of f (ENABLE pin) logic. The convert[...]

  • Page 7

    Preliminary DS_NE1 2S20A_07272007 7 Output V oltage Programming The output voltage of the NE series is trimmable by connecting an external resistor betwe en the trim pin and output ground as shown Figure 21 and the typical trim resistor values are sho wn in T able 1. FEA TURES DESCRIPTIONS (CON.) The ENABLE input can be driven i n a variety of ways[...]

  • Page 8

    Preliminary DS_NE1 2S20A_07272007 8 Vin Vou t Enable Ground Ground Tr i m N Figure 22: Circuit configuration for output voltage margining Paralleling NE20 converters do not have built-in current sharing (paralleling) ability. Hence, paralleling of multiple NE20 converter is not recommended. D 6A/10A Rmargin-dow n Rs Rmargin-up NE20 A Output voltage[...]

  • Page 9

    Preliminary DS_NE1 2S20A_07272007 9 THERMAL CONSIDERA TION Thermal management is an importa nt part of the system design. To ensure prop er, reliable operation, suffici ent cooling of the power mod ule is needed over the entire temperature range of the modul e. Convection coolin g is usually the dominant mode of heat transfer. THERMAL CURVES (NE12S[...]

  • Page 10

    Preliminary DS_NE1 2S20A_07272007 10 THERMAL CURVES (NE12S0A0V20) NE12S0A 0V20(standard) Output Current vs. Ambient Tem perature and Air Velocity @Vin=5.0V Vout=2 .5V (Through PWB Or ientation) 0 2 4 6 8 10 12 14 16 18 20 25 30 35 40 45 50 55 60 65 70 75 80 85 Natural Conve ction 100L FM 200LFM Ambient Temperature ( ℃ ) Output Current (A) 500LFM [...]

  • Page 11

    Preliminary DS_NE1 2S20A_07272007 11 VERTICAL HORIZONT AL MECHANICAL DRA WING[...]

  • Page 12

    Preliminary DS_NE1 2S20A_07272007 12 P ART NUMBERING SYSTEM MODEL LIST NE 12 S 0A0 V 20 P N F A Product Series Input V o ltage Number of output s Output V oltag e Mounting Output Current ON/OFF Logic Pin Length Option Code NE- Non-isolated Series 12- 4.5~13.8V S- Single output 0A0 - programmable V - Vertical H- Horizontal 20-20A P- Positive N- Nega[...]