English dropdown-ico

Delta Electronics H48SN manual

1
2
3
4
5
6
7
8
9
10
11
12
13

Go to page of

Similar user manuals

A good user manual

The rules should oblige the seller to give the purchaser an operating instrucion of Delta Electronics H48SN, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.

What is an instruction?

The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Delta Electronics H48SN one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.

Unfortunately, only a few customers devote their time to read an instruction of Delta Electronics H48SN. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.

What should a perfect user manual contain?

First and foremost, an user manual of Delta Electronics H48SN should contain:
- informations concerning technical data of Delta Electronics H48SN
- name of the manufacturer and a year of construction of the Delta Electronics H48SN item
- rules of operation, control and maintenance of the Delta Electronics H48SN item
- safety signs and mark certificates which confirm compatibility with appropriate standards

Why don't we read the manuals?

Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Delta Electronics H48SN alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Delta Electronics H48SN, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Delta Electronics service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Delta Electronics H48SN.

Why one should read the manuals?

It is mostly in the manuals where we will find the details concerning construction and possibility of the Delta Electronics H48SN item, and its use of respective accessory, as well as information concerning all the functions and facilities.

After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.

Table of contents for the manual

  • Page 1

    FEATURES  High Efficiency: 91.0% @ 28V/12.5A  Size: 61.0x57.9x12.7mm (2.40”×2.28”×0.50”)  S tandard footprint  Industry standard pin out  Fixed frequency operation  Metal baseplate  Input UVLO, Output OCP , OVP , OTP  Basic insulation  2250V isolation  2:1 Input voltage range  ISO 9001, TL 9000, ISO 14001, Q[...]

  • Page 2

    TECHNICAL SPECIFICA TIONS (T A =25°C, airflow rate=600 LFM, V in =48Vdc, nominal V out unless otherw ise noted.) H48SN28012_01 172008 2 PA R A M E T E R NOTES and CONDITIONS H48SN28012 (St andard) Min. T yp . Max. U nits ABSOLUTE MAXIMUM RA TINGS Input V oltage Continuous 80 Vdc T ransient (100ms) 100ms 100 Vdc Operating T emperature Please refer [...]

  • Page 3

    ELECTRICAL CHARACTERISTICS CUR VES 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 02468 1 0 1 2 OUTPUT CURRE NT(A) POWER DISSIPATION (W) 70 75 80 85 90 95 02 46 8 1 0 1 2 OUT P UT CURRE NT (A ) EFFICIENCY (%) 1 4 36Vi n 48V i n 75Vi n 1 4 36Vin 48Vi n 75Vin Figure 1: Efficiency vs. load current for minimum, nominal, and maximum in put voltage at 2[...]

  • Page 4

    ELECTRICAL CHARACTERISTICS CUR VES For Negative Remote On/Off Logic Figure 4: T urn-on transi ent at full rated load current (resistive load) (10ms/div). CH3: V out;5V/ div; CH1: ON/OFF input: 2V/div Figure 5: T urn-on transient at minimum loa d current (10ms/div). CH3: V out: 5V /div; CH1: ON/OFF input: 2V/div For Positive Remote On/Off Logic Figu[...]

  • Page 5

    ELECTRICAL CHARACTERISTICS CUR VES Figure 8: Output voltage response to step-change in load current (75%-50% of Io, max; di/dt = 1A/10µS ) . Load cap: 330µF aluminum,10uF Low ESR capacitor and 1µF ceramic capacitor . T op T race: V out ( 100 mV/div), Bottom T race: Iout (5 A /div). Scope measureme nt should be made using a BNC cable (length shor[...]

  • Page 6

    ELECTRICAL CHARACTERISTICS CUR VES Figure 1 1: Input T erminal Ripple Current, i c , at full rated output current and nominal i nput voltage with 12µH source impeda nce and 220µF electrolytic capacitor (1A/div). Figure 12: Input reflected ripple current, i s , through a 1 2µH source inductor at nominal input vo ltage and rated l oad current (10 [...]

  • Page 7

    ELECTRICAL CHARACTERISTICS CUR VES 0.0 5.0 10.0 15.0 20.0 25.0 30.0 02468 1 0 1 2 1 4 1 6 1 8 2 0 LOAD CURRENT ( A) OUTPUT VOLTAGE ( V) Vin=48V Figure 14: Out p ut voltage ripple at nominal input voltage and rated load current (20 mV/div). Load capacitance:330uF aluminum, 1µF ceramic capacitor and 10µFlow ESR capacitor . Bandwidth: 20 MHz. Scope [...]

  • Page 8

    DESIGN CONSIDERA TIONS Input Source Impedance The impedance of the input sou rce connecting to the DC/DC powe r modules will interact wit h the modules and affect the st ability . A low ac-impedance input source is recommended. If the source indu ctance is more th an a few μ H, we advise adding a 220 to 47 0 μ F electrolytic capa citor (ESR < [...]

  • Page 9

    H48SN28012_01 172008 9 FEA TURES DESCRIPTIONS Over-Current Protection The modules include an internal output over-curre nt 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 (hiccup mode). The modules will[...]

  • Page 10

    FEA TURES DESCRIPTIONS (CON.) Output V oltage Adjustment (TRIM) To increase or decrea se the output voltage set poin t, the modules may be connected wit h an external resistor betwee n the TRIM pin and either the SENSE(+) or SENSE(-). The TRIM pin should be left open if this feature is not used. Figure 18: Circuit configuration for trim-down (decre[...]

  • Page 11

    THERMAL CONSIDERA TIONS Thermal Derating Thermal management is an important part of the syst em design. To ensure p roper, reliable operation, sufficie nt 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. Heat can be removed by increa sing airf[...]

  • Page 12

    H48SN28012_01 172008 12 MECHANICAL DRA WING Pin No. Name Function 1 2 3 4 -Vin CASE 5 6 7 8 9 ON/OFF SE Ne age e Pin S ecificatio gative input volt se ground Ca Remote ON/OFF Positive input voltag Positive output vol tage Positive remote sense Output voltage trim Negative remote sense Negative output voltage +Vin +V out +SEN TRIM -SENSE -V out p n:[...]

  • Page 13

    H48SN28012_01 172008 13 P ART NUMBERING SYSTEM H 48 S N 280 12 N R F A Form Factor Input V oltage Number of Output s Product Series Output V oltage Output Current ON/OFF Logic Pin Length Option Code H- Half Brick 48V S- Single N- 350W series 280- 28V 12- 12.5A N- Negative P- Positive R- 0.170” N- 0.145” K- 0.1 10” F- RoHS 6/6 (Lead Free) S pa[...]