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Details, datasheet, quote on part number:PKF4919B
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Datasheet text preview:
PKF 4919B I
DC/DC power module 2.5 V / 4.4 A / 11W
· SMD package with ultra low component height 8.0 mm (0.315 in.) · 83% efficiency at full load · 1,500 Vdc isolation voltage · Synchronous rectification · MTTF >10 million hours at +50°C case temperature · Low EMI
Patents Pending
The MacroDensTM PKF 4919B I true component level on-board DC/DC power modules are intended as distributed power sources in decentralized 48 and 60VDC power systems. The over-moulded rugged design also makes them suitable for other demanding industrial applications. They are optimized for an operational ambient temperature range in compliance with present and
future application needs, including non temperature controlled environments. The mechanical design offers a surface mount version, delivered in ready-to-use tubes, trays or tape & reel package, and compatibility with semi and fully aqueous cleaning processes. For mechanical and other information please refer to the PKF series General information data sheet.
E
Absolute Maximum Ratings
Characteristics TC TS VI V ISO Etr VRC Vadj Case temperature at full output power Storage temperature Continuous input voltage1) Isolation voltage (input to output test voltage) Transient input energy Remote control voltage pin 11 ref. to pin 17 Output adjust voltage pin 8 ref. to pin 17 5 5 min 45 55 0.5 1,500 0.10 +16 +40 max +100 +125 +75 Unit °C °C V dc V dc Ws V dc V dc
Stress in excess of Absolute Maximum Ratings may cause permanent damage. Absolute Maximum Ratings, sometimes referred to as no destruction limits, are normally tested with one parameter at a time exceeding the limits of Output data or Electrical Characteristics. If exposed to stress above these limits, function and performance may degrade in an unspecified manner.
Input TC Characteristics VI VIoff VIon CI P Ii P RC Input voltage range1)2) Tur n-off input voltage Tur n-on input voltage Input capacitance Input idling power IO = 0, TC = 30...+ 95 °C TC = 30...+ 95 °C, RC connected to pin 17 ( VI = 5 3 V ) ( VI = 6 6 V ) ( VI = 5 3 V ) ( VI = 6 6 V )
See typical characteristics See typical characteristics
Conditions
min 36 30.0 32.0
typ
max 75
Unit V V V mF mW
NOTES: 1) The input
33.0 34.5 1.4 600 700 40 60
35.0 36.0
2)
voltage range 36...75 V dc meets the European Telecom Standard prETS 300 132-2 Nominal input voltage range in 48 V and 60 V dc power systems, 40.5... 57.0 V and 50.0... 72.0 V respectively. Absolute max continuous input voltage is 75 V dc. The power modules will operate down to £35V, when VI decreases, but will turn on at VI £36V, when VI increases (see also Operating information).
Input stand-by power
mW
Connections
Pin 1 2 3 4-7 8 9-10 11 1216 17 18 Designation Out 1 Rtn Out 1 NC Vadj NC RC NC In +In Function Output 1(+) Output return. Output 1(+), Preferred output. Not connected. Galvanically isolated from other pins. Output voltage adjust. Not connected. Remote control and turn-on/off input voltage adjust Not connected. Galvanically isolated from other pins. Negative input. Positive input.
18 17 16 15 14 13 12 11 10
1
2
3
4
5
6
7
8
9
Note: Galvanic isolation is verified in an electric strength test. Test voltage is 1,500 Vdc for 60 s. In final test however, duration is decreased to 1s. Pin 1 and 3 must be connected for optimum performance.
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EN/LZT 146 98 R1A © Ericsson Microelectronics AB, June 2001
Safety
The PKF 4919B I DC/DC power module is designed in accordance with EN 60 950, Safety of information technology equipment including electrical business equipment. The PKF power modules are recognized by UL and meet the applicable requirements in UL 1950 Safety of information technology equipment, the applicable Canadian safety requirements and UL 1012 Standard for power supplies. The DC/DC power module shall be installed in an end-use equipment and considerations should be given to measuring the case temperature to comply with TCmax when in operation. Abnormal component tests are conducted with the input protected by an external 15 A fuse. The need for repeating these tests in the end-use appliance shall be considered if installed in a circuit having higher rated devices. When the supply to the DC/DC power module meets all the requirements for SELV (<60Vdc), the output is considered to remain within SELV limits (level 3). The isolation is an operational insulation in accordance with EN 60 950. The DC/DC power module is intended to be supplied by isolated secondary circuitry and shall be installed in compliance with the requirements of the ultimate application. If they are connected to a 60 V DC system reinforced insulation must be provided in the power supply that isolates the input from the mains. Single fault testing in the power supply must be performed in combination with the DC/DC power module to demonstrate that the output meets the requirement for SELV. One pole of the input and one pole of the output is to be grounded or both are to be kept floating. The terminal pins are only intended for connection to mating connectors of internal wiring inside the end-use equipment. These DC/DC power modules may be used in telephone equipment in accordance with paragraph 34 A.1 of UL 1459 (Standard for Telephone Equipment, second edition). The galvanic isolation is verified in an electric strength test. Test voltage (VISO) between input and output is 1,500 Vdc for 60 s. In production the test duration may be decreased to 1 s. The capacitor between input and output has a value of 2.2 nF and the leakage current is less than 1µA @ 53 Vdc. The case is designed in non-conductive epoxy. Its flammability rating meets UL 94V-0. The oxygen index is 34%.
Electrical Data
Fundamental circuit diagram Single output
Transient input voltage
Single voltage pulse at +25°C ambient temperature.
EN/LZT 146 98 R1A © Ericsson Microelectronics AB, June 2001
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