Instruction/ maintenance manual of the product Q48SP Delta Electronics
Go to page of 14
1 FEATURES High efficiency: 92.5 % @12V/18A Size: 57.9x36.8x10.8mm (2.28”x1 .45”x0.43”) (w/o heatspreader) 57.9x36.8x12.7mm (2.28” x1.45”x0.
DS_Q48SP12017_05302 008 2 TECHNICAL SPECIFICATIONS (T A =25°C, airflow rate=300 LFM, V in =48Vdc, nominal V out unless otherw ise noted; mounted on bo ard.) PARAMETER NOTES and CONDITIONS Q48SP12017NRFA Min. Ty p. Max. Units ABSOLUTE MAXIMUM RA TINGS Input Voltage Continuous -0.
DS_Q48SP12017_05302 008 3 ELECTRICAL CHARACT ERISTICS CURVES 70 72 74 76 78 80 82 84 86 88 90 92 94 2468 1 0 1 2 1 4 1 6 1 8 OUTPUT C UR R E NT( A) EF F ICIEN CY( % ) 36V 48V 75V 0 2 4 6 8 10 12 14 16 18 20 2 4 6 8 10 12 14 16 18 O U TP UT CURRE N T(A ) LOS S (W ) 36V 48V 75V Figure 1: Efficiency vs.
DS_Q48SP12017_05302 008 4 ELECTRICAL CHARACTERISTICS CURVES Figure 5: Output voltage response to step-change in load current (50%-75% of Io, max: di/dt =0.1A/ µs). Load cap:1µF ceramic capacitor and 10uF T antalum capacitor. T op Trace: Vout (200mV/div), Bo ttom Trace: Iout (5 A /div).
DS_Q48SP12017_05302 008 5 ELECTRICAL CHARACTERISTICS CURVES Figure 9: Test set-up diagram showing measurement points for Input Terminal Ripple Current and Input Reflecte d Ripple Current. Note: Measured input reflected-ripple current with a simulated source Inductance (L TEST ) of 12 μ H.
DS_Q48SP12017_05302 008 6 ELECTRICAL CHARACTERISTICS CURVES Vo(-) Vo(+) 10u 1u Copper Strip SCOPE RESISTIV E LOAD Figure 11: Output voltage noise and ripple meas urement test setup Figure 1 2: Output voltage ripple at 36V input voltage and rated load current (50 mV/div).
DS_Q48SP12017_05302 008 7 DESIGN CONSIDERATIONS Input Source Impedance The impedance of the input sou rce connecting to the DC/DC powe r modules will intera ct with the modul es and affect the stability. A low ac-impedan ce input source is recommend ed.
DS_Q48SP12017_05302 008 8 FEATURES DESCRIPTIONS Over-Current Protection The modules include an inte rnal output over-current protection circuit, which will endure current limiting for an unlimited duration during output overload. If the output current exceeds the OCP set point, the modul es will automatically shut down and latch off.
DS_Q48SP12017_05302 008 9 FEATURES DESCRIPTIONS (CON.) Output Voltage Adjustment (TRIM) (Not applicable to Q48SP120017Exxx) To increase or decrea se the output voltage set poi nt, connect an external resistor betwe en the TRIM pin and either the SENSE(+) or SENSE(-).
DS_Q48SP12017_05302 008 10 THERMAL CONSIDERATIONS Thermal management is an important part of the system design. To ensure proper, rel iable operation, sufficient cooling of the p ower module is need ed over the entire temperature range of the module. Convection cooling is usually the dominant mode of heat tran sfer.
DS_Q48SP12017_05302 008 11 MECHANICAL DRAWING (W ITHOUT HEATSPERADER) Pin No. Name Function 1 2 3 4 5 6 7 8 9 -Vin CASE ON/OFF +Vin +Vout +SENSE TRIM -SENSE -Vout Negative input voltage Case ground pi.
DS_Q48SP12017_05302 008 12 Mechanical Drawing (FOR Q48SP12017Exxx).
DS_Q48SP12017_05302 008 13 MECHANICAL DRAWING (WITH HEATSPREADER).
DS_Q48SP12017_05302 008 14 PART NUMBERING SYSTEM Q 48 S P 120 17 N R F A Form Factor Input Voltage Number of Outputs Product Series Output Voltage Output Current ON/OFF Logic Pin Length Option Code Q - Quarter Brick 48 - 36~75V S - Single P - 200W series 120 - 12V 18A N - Negative P - Positive E - Negative and no trim, no sense pins R - 0.
An important point after buying a device Delta Electronics Q48SP (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Delta Electronics Q48SP yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Delta Electronics Q48SP - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Delta Electronics Q48SP you will learn all the available features of the product, as well as information on its operation. The information that you get Delta Electronics Q48SP will certainly help you make a decision on the purchase.
If you already are a holder of Delta Electronics Q48SP, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Delta Electronics Q48SP.
However, one of the most important roles played by the user manual is to help in solving problems with Delta Electronics Q48SP. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Delta Electronics Q48SP along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
