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| PKF 4211A I DC/DC power module 5 V / 3 A / 15 W * SMD and through-hole versions with ultra low component height 8.0 mm (0.315 in.) * 81% efficiency at full load * 1,500 V dc isolation voltage * Switching frequency synchronization * MTTF >10 million hours at +50C case temperature * Low EMI Pending The MacroDensTM 15W PKF 4211A I true component level on-board DC/DC power modules are intended as distributed power sources in decentralized - 48 and - 60V DC power systems. 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 the choice of surface mount or through-hole versions, delivered in readyto-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 VISO 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 0.01 +16 +40 max +100 +125 +80 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 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 33.5 34.5 1.4 240 250 35 55 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 80 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 3-6 7 8 9 10 11 12-16 17 18 Designation Out 1 Rtn NC Sync Vadj NOR TOA RC NC -In +In Function Output 1(+). Output return. Not connected. Galvanically Isolated from input pins. Synchronization input. Output voltage adjust. Connection of Nominal Output voltage Resistor. Turn-on/off input voltage adjust. Remote control and turn-on/off input voltage adjust. Not connected. Galvanically isolated from input pins. Negative input. Positive input. 18 17 16 15 14 13 12 11 10 1 2 3 4 5 6 7 8 9 2 EN/LZT 146 79 R1A (c) Ericsson Microelectronics AB, June 2001 Safety The PKF 4211A 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 enduse 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 1 nF and the leakage current is less than 1A @ 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 +25C ambient temperature. EN/LZT 146 79 R1A (c) Ericsson Microelectronics AB, June 2001 3 Output TC = -30...+95 C, VI = 36 ...75 V and pin 8 connected to pin 9. Output 1 Characteristics Conditions min VOi Output voltage initial setting and accuracy TC = +25C, IO = 1.5 A, VI = 53 V Output adjust range1) VO Output voltage tolerance band Idling voltage Long term drift included IO = 0 A VI = 38...60 V Line regulation IO =3 A VI = 50...72 V Load regulation ttr Load transient recovery time IO = 0.3...3 A, VI = 53 V load step =1.5A Vtr Load transient voltage -270 Tcoeff tr ts IO P O max Ilim I sc Temperature coefficient2) Ramp-up time Start-up time Output current Max output power2) Current limiting threshold Short circuit current Calculated value TC Unit typ 5.05 max 5.09 6.30 5.25 5.50 20 mV 10 40 90 150 +260 140 mV ms mV mV mV/C ms ms 3.0 A W 4.0 4.6 15 50 80 50 A A mVp-p dBmV dB 6.10 V V V V 5.01 2.80 IO = 0.3...3 A 4.85 IO = 0.3...3 A, VI = 53 V IO = 3 A, T C =+40...+90C IO = 0.3...3 A, 0.1...0.9 xVO IO = 0.3...3 A, VI = 53 V From VI connection to VO = 0.9 xVOi 0 15 3.3 0.1 2.0 4.7 Supply voltage rejection (ac) f = 100 Hz sine wave, 1Vp-p, VI = 53 V (SVR = 20 log (1 Vp-p/VOp-p)) See also Operating Information. See Typical Characteristics. Miscellaneous Characteristics h Conditions VI = 53 V Efficiency VI = 66 V IO = 3 A VI = 53 V Pd Power dissipation VI = 66 V 3 3 W 78 81 min 78 typ 81 % max Unit 4 EN/LZT 146 79 R1A (c) Ericsson Microelectronics AB, June 2001 Typical Characteristics Efficiency (typ) @ TA = +25C 84 36V 82 75V 5.3 Power derating 20 5.4 Output characteristic (typ) 15 Max output power (W) Output voltage (V) +90 +100 +110 +120 Efficiency (%) 80 5.2 78 10 5.1 76 5,0 5 4.9 74 72 1.0 1.25 1.50 1.75 2.00 2.25 2.50 2.5 3.0 0 -50 -40 -30 +80 4.8 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Load Current (A) Case temperature (C) Load current (A) Temperature coefficient 5.25 Turn-on/turn-off input voltage 38 Dynamic load response (typ) @ +25C The output voltage deviation is determined by the load transient (dI/ dt) 5.18 36 200 mV/div Output voltage (V) 5.11 Turn-on/Tur-off voltage 35 Turn on 34 Turn off 32 5.05 Load change: dI/dt 4 A/ms 2 A/div IOstep= 1.5-3-1.5A 4.98 4.91 31 4.85 -30 -14.3 1.2 16.8 32.5 48.1 64.7 79.8 95 30 -30 -14.3 1.2 16.8 32.5 48.1 64.7 79.8 95 0.2 ms/div Case temperature (C) Case temperature (C) EMC Specifications During EMC measurements the PKF power module is measured directly. The fundamental switching frequency is 510 kHz 5% at IO = 0.3...3A Test Conditions: VI= 53 V, IO= 3A at room temperature External Filter (class B) Required external input filter in order to meet class B in EN 55022, CISPR 22 and FCC part 15J. Conducted EMI (input teminals) L1 = 51H ( Recommended part: Siemens B82790-S0513 ) L2 = 10H C1, C2, C3 = 0.68 F C4 = 22F C5, C6 = 10nF C5 L1 + Supply voltage C6 pin 17 C1 C2 C3 C4 L2 pin 18 PKF 4211A without filter EN/LZT 146 79 R1A (c) Ericsson Microelectronics AB, June 2001 5 Operating Information Fuse Considerations To prevent excessive current from flowing through the input supply line, in the case of a short-circuit across the converter input, an external fuse should be installed in the non-earthed input supply line. We recommend using a fuse rated at approximately 2 to 4 times the value calculated in the formula below: Iin max = PO max (hmin x VI min) Refer to the fuse manufacturer for further information. Remote Control (RC) Turn-on or turn-off can be realized by using the RC-pin. If pin 11 is connected to pin 17 the power modules turns off. Normal operation is achieved if pin 11 is open (NC). To ensure safe turn-off the voltage difference between pin 11 and 17 shall be less than 1.0 V. RC is an open collector compatible output with a sink capacity of 1mA (see fig. 1). PKF 4211A with 51 H common mode and 10 H series inductor Radiated EMS (Electro-Magnetic Fields) Radiated EMS is measured according to test methods in IEC Standard publ. 801-3. No deviation outside the VO tolerance band will occur under the following conditions: Frequency range 0.01...200 MHz 200...1,000 MHz 1...12 GHz Voltage level 3 Vrms/m 3 Vrms/m 10 Vrms/m PKF 4211A I Conducted EMS Electro Magnetic Susceptibility is measured by injection of electrical disturbances on the input terminals. No deviation outside the VO tolerance band will occur under the following conditions: Frequency range Voltage level 30...300 MHz 1.0 Vrms The signal is amplitude modulated with 1 kHz/80% and applied in both differential and common mode. Figure 1 Turn-on/off Input Voltage The power module monitors the input voltage and will turn on and turn off at predetermined levels set by means of external resistors. To increase VIon a resistor should be connected between pin 11 and 17 (see fig. 2). The resistance is given by the following equation: For VI>34.5V, Riunom=(2655-VI)/(VI-34.5) kW VI is the desired turn-on input voltage. The values are nominal and apply when the unadjusted module turns on at 34.5V. To decrease VIon a resistor should be connected between pin 10 and 11 (see fig. 2). The resistance is given by the following equation: For 30.5 Electro Static Discharge is tested according to IEC publ. 801-2. No destruction will occur if the following voltage levels are applied to any of the terminal pins: Test Air discharge Contact discharge Voltage level 4 kV 2 kV EFT Electrical Fast Transients on the input terminals could affect the output voltage regulation causing functional errors on the Printed Board Assembly (PBA). The PKF power modules withstand EFT levels of 0.5 kV keeping VO within the tolerance band and 2.0 kV without destruction. Tested according to IEC publ. 801-4. Output Ripple & Noise (VOac) Output ripple is measured as the peak to peak voltage of the fundamental switching frequency. 6 EN/LZT 146 79 R1A (c) Ericsson Microelectronics AB, June 2001 Input and Output Impedance Both the source impedance of the power feeding and the load impedance will interact with the impedance of the DC/DC power module. It is most important to have the ratio between L and C as low as possible, i.e. a low characteristic impedance, both at the input and output, as the power modules have a low energy storage capability. Use an electrolytic capacitor across the input if the source inductance is higher than 10 mH. Their equivalent series resistance together with the capacitance acts as a lossless damping filter. Suitable capacitor values are in the range 10-100 mF. Figure 2 Synchronization (Sync) It is possible to synchronize the switching frequency to an external symmetrical clock signal. The input can be driven by an TTLcompatible output and referenced to the input pin 17. Output Voltage Adjust (Vadj) Output voltage, VO, can be adjusted by using an external resistor or other external circuitry. If other circuitry is used, the slew rate has to be limited to maximum 5 V/ms. If pins 8 and 9 are not connected together the output will decrease to a low value. To increase VO a resistor should be connected between pin 8/9 and 17, and to decrease VO a resistor should be connected between pin 8 and 9 (see fig. 3). To increase output voltage: Rounom=4.20x(6.35-VO)/(VO-VI) kW VI is the initial output voltage when pin 8 and 9 are connected, VO is the desired output voltage. To decrease output voltage: Rodnom=18x(VI-VO)/(VO-2.7) kW VI is the initial output voltage when pin 8 and 9 are connected, VO is the desired output voltage. Characteristics High level Threshold level*) Low level Sink current Sync. frequency *) min 2.2 1.2 0 520 typ max 6.5 unit V V V mA kHz 1.7 2.2 0.4 1.5 688 Rise time <10ns Parallel Operation Paralleling of several converters is easily accomplished by direct connection of the output voltage terminal pins. The load regulation characteristic is specifically designed for optimum paralleling performance. Load sharing between converters will be within 10%. It is recommended not to exceed PO = n x 0.9 x PO max, where POmax is the maximum converter output power and n the number of paralleled converters, to prevent overloading any of the converters and thereby decreasing the reliability performance. Order Info Version Surface mount Through hole Part No. PKF 4211A SI PKF 4211A PI Figure 3 Current Limiting Protection (Ilim) The output power is limited at loads above the output current limiting threshold (Ilim), specified as a minimum value. Capacitive Load The PKF series has no maximum limit for capacitive load on the output. The power module may operate in current limiting mode during start-up, affecting the ramp-up and the start-up time. For optimum start performance we recommend maximum 100 mF/A of IO. Connect capacitors at the point of load for best performance. Information given in this data sheet is believed to be accurate and reliable. No responsibility is assumed for the consequences of its use nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Ericsson Microelectronics. These products are sold only according to Ericsson Microelectronics' general conditions of sale, unless otherwise confirmed in writing. Specifications subject to change without notice. EN/LZT 146 79 R1A (c) Ericsson Microelectronics AB, June 2001 7 Ericsson Microelectronics SE-164 81 KISTA, Sweden Phone: +46 8 757 5000 www.ericsson.com/microelectronics For local sales contacts, please refer to our website or call: Int. +46 8 757 4700, Fax: +46 8 757 4776 The latest and most complete information can be found on our website! Preliminary Data Sheet EN/LZT 146 79 R1A (c) Ericsson Microelectronics AB, June 2001 |
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