IMX7 DC-DC Series Data Sheet 7-Watt DC-DC Converters (R) Features Input voltage ranges up to 150 VDC 1 or 2 outputs up to 48 VDC 1500 to 2500 VDC I/O electric strength test * RoHS lead-free solder and lead-solder-exempted products are available * Extremely wide input voltage ranges * Electrical isolation, single and dual outputs * Immunity to IEC/EN 61000-4-2, -3, -4, -5, -6 * High efficiency (typ. 84%) * Flex power: flexible load distribution on outputs * Outputs no-load and short-circuit proof * High reliability and no derating * Operating ambient temperature -40 to +85 C * 2" x 1" case with 10.5 mm profile 1 25.4 1.0" 10.5 0.42" 50.8 2.0" 1 70/110IMX7 Description The IMX7 Series of board-mountable 7 Watt DC-DC converters has been designed according to the latest industry requirements and standards. The converters are particularly suitable for use in mobile or stationary applications in transport, railways, industry, or telecom, where variable input voltages or high transient voltages are prevalent. Covering a total input voltage range from 8.4 VDC up to 150 VDC with four different types, the converters are available with single and electrically isolated double outputs from 3.3 up to 48 VDC with flexible load distribution on double outputs. Features include efficient input and output filtering with unsurpassed transient and surge protection, low output ripple and noise, consistently high efficiency over the entire input voltage range, and high reliability as well as excellent dynamic response to load and line changes. The converters provide supplementary insulation with SELV Table of Contents models outputs as for instances required in battery-supported systems, where the bus voltage may exceed the SELV limit of 60 V. They are designed and built according to the international safety standards IEC/EN 60950 and approved by TUV, UL, and cUL. In addition, 70IMX7 and 110IMX7 models are CE-marked. The circuit is comprised of integral planar magnetics, and all components are automatically assembled and solidly soldered onto a single PCB without any wire connections. Magnetic feedback ensures maximum reliability and repeatability in the control loop over all operating conditions. Careful considerations of possible thermal stresses ensure the absence of hot spots, providing long life in environments where temperature cycles are a reality. The thermal design allows operation at full load up to an ambient temperature of 85 C in free air without using any potting material. For extremely high vibration environments the case has holes for screw mounting. Several options such as open-frame provide a high level of application-specific engineering and design-in flexibility. Page Page Description ............................................................................. 1 Electromagnetic Compatibility (EMC) .................................. 10 Model Selection ..................................................................... 2 Immunity to Environmental Conditions ................................ 11 Functional Description ........................................................... 3 Safety and Installation Instructions ...................................... 12 Electrical Input Data ............................................................... 4 Mechanical Data .................................................................. 12 Electrical Output Data ............................................................ 6 Description of Options ......................................................... 13 Auxiliary Functions ................................................................. 8 EC Declaration of Conformity .............................................. 14 BCD20007 Rev AA Page 1 of 14 www.power-one.com IMX7 DC-DC Series Data Sheet 7-Watt DC-DC Converters (R) Model Selection Table 1: Model Selection Output 1 Vo1 nom Io1 nom [ VDC] [A] 1 1 2 3 Output 2 Vo2 nom Io2 nom [ VDC] [A] 1 Output power Po nom [W ] Input voltage range [ VDC] Efficiency typ [%] Model Options 2 3.3 3.3 3.3 3.3 1.5 1.5 1.5 1.5 - - 5 5 5 5 8.4 - 36 16.8 - 753 40 - 121 60 - 150 79 81 79 79 20IMX7-03-8 40IMX7-03-8 70IMX7-03-8 110IMX7-03-8 Z, G Z, G Z, G Z, G 5.1 5.1 5.1 5.1 1.2 1.2 1.2 1.2 - - 6.1 6.1 6.1 6.1 8.4 - 36 16.8 - 753 40 - 121 60 - 150 80 81 80 80 20IMX7-05-8 40IMX7-05-8 70IMX7-05-8 110IMX7-05-8 Z, G Z, G Z, G Z, G 5 5 5 5 0.6 0.6 0.6 0.6 5 5 5 5 0.6 0.6 0.6 0.6 6 7 7 7 8.4 - 36 16.8 - 753 40 - 121 60 - 150 82 83 82 82 20IMX7-05-05-8 40IMX7-05-05-8 70IMX7-05-05-8 110IMX7-05-05-8 Z, G Z, G Z, G Z, G 12 12 12 12 0.25 0.25 0.25 0.25 12 12 12 12 0.25 0.25 0.25 0.25 6 7.2 7.2 7.2 8.4 - 36 16.8 - 753 40 - 121 60 - 150 84 84 83 84 20IMX7-12-12-8 40IMX7-12-12-8 70IMX7-12-12-8 110IMX7-12-12-8 Z, G Z, G Z, G Z, G 15 15 15 15 0.2 0.2 0.2 0.2 15 15 15 15 0.2 0.2 0.2 0.2 6 7.2 7.2 7.2 8.4 - 36 16.8 - 753 40 - 121 60 - 150 84 84 83 84 20IMX7-15-15-8 40IMX7-15-15-8 70IMX7-15-15-8 110IMX7-15-15-8 Z, G Z, G Z, G Z, G 24 24 24 24 0.13 0.13 0.13 0.13 24 24 24 24 0.13 0.13 0.13 0.13 6.2 7.2 7.2 7.2 8.4 - 36 16.8 - 753 40 - 121 60 - 150 84 84 83 84 20IMX7-24-24-8 40IMX7-24-24-8 70IMX7-24-24-8 110IMX7-24-24-8 Z, G Z, G Z, G Z, G Flexible load distribution on double outputs possible. If only one output voltage is required, connect both outputs of double-output models in parallel. Operation at low input voltage possible, if Po is reduced to approx. 80% of Po nom at Vi min = 14.1 V. Part Number Description 20 IMX7 - 05 - 05 -8 Z G Input voltage range Vi 8.4 - 36 VDC ......................................... 20 16.8 - 75 VDC ....................................... 40 40 - 121 VDC ........................................ 70 60 - 150 VDC ...................................... 110 Series ......................................................................... IMX7 Output voltage of output 1 ...................... 03, 05, 12, 15, 24 Output voltage of output 2 ............................ 05, 12, 15, 24 Operating ambient temperature TA -40 to 85 C ............................................... -8 Options: Open frame .................................................. Z RoHS compliant for all six substances ......... G Example: 20IMX7-05-05-8ZG: DC-DC converter, input voltage range 8.4 - 36 V, 2 outputs providing each 5 V, 600 mA, temperature range - 40 to 85 C, open frame, RoHS compliant for all six substances. Obsolete options (NFND: not for new designs; contact Power-One for availability): TA = -25 to 71 C ....................................... -9 Surface mount version ............................... M C-pinout ...................................................... C BCD20007 Rev AA Page 2 of 14 www.power-one.com IMX7 DC-DC Series Data Sheet 7-Watt DC-DC Converters (R) Functional Description The IMX7 Series DC-DC converters are feedback-controlled flyback converters using current mode PWM (Pulse Width Modulation). In the case of single-output models, the output is directly sensed and fed back to the primary control circuit via a pulse transformer, resulting in tight regulation of the output voltage. The R input is referenced to the secondary side and allows for programming the output voltages in the range 75 to 105% Vo nom, using either an external resistor or an external voltage source. Current limitation is provided by the primary circuit, thus limiting the total output current (Io nom for the single- and the sum of Io1 nom and Io2 nom for the double-output models). The inhibit input i allows remote control of the outputs; pin i must be connected to Vi- to activate the converter. 03041a Vi+ 1 For double-output models, the output voltage is sensed by a separate transformer winding close to the secondary and fed back to the primary control circuit. The close magnetic coupling provided by the planar construction ensures very good regulation and allows for flexible load distribution. The Trim input (R) is referenced to the primary side of double-output models, and allows for programming the output voltages in the range 100 to 105% Vo nom by means of an external resistor, or within 75 to 100% Vo nom, using an external voltage source. 11 Vo+ PWM i 3 10 Vo- 12 2 x 2200 pF Vi- 2 13 R n.c. 4 Fig. 1 Block diagram for single-output models with standard pinout. 03042a Vi+ 1 11 Vo1+ Trim (R) 4 10 Vo1- PWM i 3 13 Vo2+ Vi - 2 12 Vo2- 2 x 2200 pF 14 n.c. Fig. 2 Block diagram for dual-output models with standard pinout. BCD20007 Rev AA Page 3 of 14 www.power-one.com IMX7 DC-DC Series Data Sheet 7-Watt DC-DC Converters (R) Electrical Input Data General conditions: - TA = 25C, unless TC is specified. - Connector pin i connected with Vi-. - Trim or R input not connected. Table 2: Input Data Input 20IMX7 Characteristics Vi Input voltage range 1 Vi nom Nominal input voltage Conditions min TC min - TC max I o = 0 - Io nom 8.4 Repetitive surge voltage abs. max input (3 s) t start up Converter 2 Worst case condition at Vi min and full load t rise switch on inh. release Rise time 2 Vi nom Io nom 0.5 0.25 0.5 0.25 0.5 0.25 0.5 0.1 0.1 0.1 0.1 150 5 12 -10 converter inhibited 2.4 15 30 8 4.7 15 8 0.5 0.8 -10 15 8 0.2 0.8 -10 -0.5 -0.5 - 0.5 1 1 1 1 Iinr p Inrush peak current Vi = Vi nom 4 fs Switching frequency Vi min - Vi max, Io = 0 - Io nom I i rr Reflected ripple current Io = 0 - Io nom EN 3.0 3.0 F V 3.0 mA 3.0 3.8 3.7 4.2 5.6 A approx. 400 approx. 400 approx. 400 approx. 300 kHz 10 mApp 50 55022 3 mA Vi max 2.4 Vi max 2.4 Vi max 2.4 Vi max or open or open or open or open -0.5 Vi min - Vi max 15 0.8 converter operating Input current when the converter is inhibited s ms 0.2 0.8 -10 converter inhibited Ii inh 6 100 5 converter operating 5 110 50 5 12 (for surge calculation) 4 70 150 VDC 5 Inhibit voltage 3 40 typ max Unit 121 60 12 Input capacitance 2 typ max min 40 5 Vinh 1 75 12 Ci Input RFI level conducted and radiated typ max min 16.8 6 110IMX7 resistive load Io = 0, Vi min - Vi max Vi RFI 70IMX7 capacitive load No load input current Inhibit current 36 0.25 Ii o Iinh max min 20 Vi sur start-up time typ 40IMX7 B 30 B 20 B B Vi min will not be as stated, if Vo is increased above Vo nom by use of the R or Trim input. If the output voltage is set to a higher value, Vi min will be proportionally increased. Measured with a resistive and the max. admissible capacitive load. Measured with a lead lenght of 0.1 m, leads twisted. Double output units with both outputs in parallel. 70/110 IMX7 types need an external capacitor at the input. (e.g. 1 F film or ceramic) Source impedance according to prETS 300132-2, version 4.3, at Vi nom. The DC-DC converter shuts down automatically at approx. 38 V. Operation at lower input voltage possible: Po approx. 80% of Po nom at Vi min = 14.4 V. Vo Vo nom trise tstart up 04008a t Fig. 3 Converter start-up and rise time BCD20007 Rev AA Page 4 of 14 www.power-one.com IMX7 DC-DC Series Data Sheet 7-Watt DC-DC Converters (R) Input Transient Voltage Protection In many applications transient voltages on the input of the converter are always possible caused, for example by short circuits between Vi+ and Vi-, where the network inductance may cause high energy pulses. To achieve IEC/EN 61000-4-5, level 2 compliance, an additional inductor and capacitor should be provided externally as shown in the figure below. The components should have similar characteristics as listed in table 4. Note: The suppressor diode D is only necessary for 20IMX7 models. To withstand 150 V transients according to 19 Pfl 1, applicable for 40 IMX7 models, the same external circuitry with similar components as for IEC/EN 61000-4-5, level 2 compliance can be used. In order to protect the converters, transient suppressors are fitted to the input; see table below: Table 3: Built-in transient voltage suppressor Model Breakdown Voltage VBR nom 20IMX7 1 Peak Power at 1 ms PP Peak Pulse Current IPP C 100 V 1500 W 11 A 70IMX7 2 144 V 600 W 2.9 A 110IMX7 2 167 V 600 W 2.5 A 2 L overvoltage lockout at approx. 38 V 40IMX7 2 1 07064 Vi+ + D i Vi- Fig. 4 The built-in overvoltage trigger shuts down the converter at approx. 38 V protecting the input up to 50 V. For higher transient voltages an external suppressor or voltage limiting circuit as, e.g., for IEC/EN 61000-4-5, level 2 compliance should be provided. If transients generating currents above the peak pulse current are possible, an external limiting network such as the circuit recommended for IEC/EN 61000-4-5, level 2 compliance is necessary. Example for external circuitry to comply with IEC/EN 61000-4-5, level 2 (transzorb D only for 20IMX7). Table 4: Components for external circuitry to comply with IEC/EN 61000-4-5 Circuit Ref. 20IMX7 40IMX7 70IMX7 110IMX7 L 330 H, 0.115 1A 330 H, 0.42 600 mA 1000 H, 2.9 290 mA 330 H 200 mA C 68 F, 63 V 68 F, 100 V 47 F, 150 V 200 F, 200 V D 1.5KE39A n.a. n.a. n.a. Input Fuse and Reverse Polarity Protection A 4 The suppressor diode on the input also provides for reverse polarity protection by conducting current in the reverse direction, thus protecting the converter. An external fuse is required to limit this current. We recommend: - - - - 3 2 For 20IMX7 a fast 2 A (F2A) fuse For 40IMX7 a fast 1 A (F1A) fuse For 70IMX7 a fast 0.63 A (F.63A) fuse For 110IMX7 a fast 0.63 A (F.63A) fuse 1 0 Inrush Current 0 20 40 60 80 s Fig. 5 The inrush current has been kept as low as possible by choosing a very small input capacitance. A series resistor may be inserted in the input line to limit this current further. BCD20007 Rev AA 04030a Typical inrush current at Vi nom , Po nom measured according to ETS 300132-2 (40IMX7). Page 5 of 14 www.power-one.com IMX7 DC-DC Series Data Sheet 7-Watt DC-DC Converters (R) Electrical Output Data General conditions: - TA = 25C, unless TC is specified. - Pin i connected with Vi -; Trim or R input left open-circuit. Table 5a: Output data for single-output models Output Vo nom 3.3 V 5.1 V Characteristics Conditions min Vo Output voltage setting Vi nom 3.28 Io nom Output current (nom.) Vi min - Vi max Io L Current limit 2 Vi nom 3.0 2.4 Vo Line and load regulation Vi min - Vi max Io = (0.05 - 1) Io nom 1 1 % vo Output voltage noise Vi min - Vi max I o = Io nom 70 mVpp 20/40/70IMX7 Output overvoltage limit 7 Co ext Admissible capacitive load Vo d Dynamic load regulation td Vo Voltage deviat. Recovery time Temperature coefficient Vo /TC (TC min to TC max) max min typ 3.32 5.07 1.5 20 40 Minimum load 1% Unit 5.13 V A 70 6 max 1.2 5 110IMX7 Vo clp typ 40 20 50 40 115 130 40 50 115 2500 130 % 2000 mF Vi nom Io nom 1/2 Io nom 250 250 mV 1 1 ms Vi min - Vi max Io = (0.05 - 1) Io nom 0.02 0.02 %/K Table 5b: Output data for double-output models Output Vo nom Characteristics Conditions Vo1 Vo2 Output voltage setting Io nom Output current 1 Io L Vo1 Current limit 2 3 20IMX7 Vi min - Vi max Load regulation Output voltage noise Vo clp Output overvoltage limit 7 Co ext Admissible capacitive load 3 Vo d Dynamic load regulation 1 2 3 4 5 6 7 Temperature coefficient Vo /TC (TC min to TC max) Vi min - Vi max Io = (0.05 - 1) Io nom 15.12 23.81 15.15 23.75 2 x 0.13 2 x 0.15 20 A 2.4 1.0 0.95 0.5 2.8 1.2 1.1 0.6 1 1 1 1 % 240 mVpp 3 115 Unit 24.19 VDC 24.25 2 x 0.2 3 40 130 3 120 25 115 3 150 50 130 2000 Voltage deviat. Vi nom I 1/2 Io nom Recovery time o nom typ max 2 x 0.24 80 6 min 2 x 0.3 5 Minimum load 1% 12.10 14.88 12.12 14.85 2 x 24 V max 2 x 0.25 Vi nom , (0.1 - 1) Io nom Vi min - Vi ma I o = I o nom typ max min 2 x 0.6 Vi min - Vi max, I o nom 4 2 x15 V typ 2 x 0.7 20IMX7 Vi nom Line regulation 2 x 12 V min 5.04 11.90 5.05 11.88 40/70/110IMX7 Vo l Vo typ max Vi nom 4.96 I o1 = Io2 = 0.5 I o nom 4.95 40/70/110IMX7 vo1, 2 td 2x5V min 30 115 60 130 300 50 115 200 100 130 % 100 F 150 330 350 600 mV 1 1 1 1 ms 0.02 0.02 0.02 0.02 %/K Each output is capable of delivering full output power Po nom according to table: Model Selection. The current limit is primary side controlled. Measured with both outputs connected in parallel. Conditions for specified output. Other output loaded with constant current Io = 0.5 Io nom. BW = 20 MHz Measured with a probe according to EN 61204. The overvoltage protection is not tracking with the R control. BCD20007 Rev AA Page 6 of 14 www.power-one.com IMX7 DC-DC Series Data Sheet 7-Watt DC-DC Converters (R) Thermal Considerations If a converter, mounted on a PCB, is located in free, quasistationary air (convection cooling) at the maximum ambient temperature TA max (see table Temperature specifications) and is operated at nominal input voltage and output power, the case temperature TC measured at the measuring point of case temperature TC (see Mechanical Data) will approach the indicated value TC max after the warm-up phase. However, the relationship between TA and TC depends heavily on the conditions of operation and integration into a system. The thermal conditions depend on input voltage, output current, airflow, temperature of surrounding components and surfaces and the properties of the printed circuit board. TA max is therefore only an indicative value, and under practical operating conditions, the ambient temperature TA may be higher or lower. Both outputs of double-output models can be connected in parallel without any precautions. Several converters (single- or double-output models) with equal output voltage can be put in parallel and will share their output current quite equally. However, this may cause start-up problems and is only recommended in applications, where one converter is able to deliver the full load current, e.g., in true redundant systems. Typical Performance Curves Vo [V] 05087a 5.5 5.0 4.5 Caution: The case temperature TC measured at the measuring point of case temperature TC (see Mechanical Data) may under no circumstances exceed the specified maximum. The installer must ensure that under all operating conditions TC remains within the limits stated in the table Temperature specifications. 4.0 3.5 3.0 0 0.4 0.8 1.2 1.6 Io [A] Short-Circuit Behavior Fig. 7 The current limitation shuts down the converter, when a short circuit is applied to the output. It acts self-protecting, and automatically recovers after removal of the overload condition. Vo versus Io (typ.) of single-output models with Vo = 5.1 V Vo [V] 05086a 13 05041a Vo [%] 12 overload short-circuit condition 100 11 switch-off 10 70 9 8 0 0.3 s 7 t Fig. 6 0.2 0.4 0.6 0.8 Io total [A] Fig. 8 Overload switch-off (hiccup mode). Vo versus Io (typ.) of double-output models (2 x12 V) with both outputs in parallel Output Overvoltage Protection Vo1 [V] The outputs are protected against overvoltages by Zener diodes. In the event of an overvoltage, the converter will shut down and attempt to restart automatically. The main purpose of this feature is to protect against possible overvoltages, which could occur due to a failure in the feedback control circuit. The converters are not designed to withstand external overvoltages applied to the outputs. 05088a 13.5 13 12.5 12 Io2 = 0.03 A Io2 = 0.3 A 11.5 Connection in Series or Parallel The outputs of single or double-output models can be connected in series without any precautions, taking into consideration that the output voltage should remain below 60 V for SELV operation. BCD20007 Rev AA 0 11 0.05 0.10 0.15 0.20 0.25 0.3 Io1 [A] Fig. 9 Cross load regulation (typ.) of double-output models (2 x12 V). The cross-load effect is negligible. Page 7 of 14 www.power-one.com IMX7 DC-DC Series Data Sheet 7-Watt DC-DC Converters (R) Vo1 , Vo2 [V] [%] 05059a 12.8 05052a 90 Vi nom Vi max Vi min 80 12.4 70 Vo2 Vo1 12 60 11.6 50 11.2 Io1 0 30 60 90 150 120 Io1 nom [%] Fig. 10 Flexible load distribution on double-outputs models (2 x12 V) with load variation from 0 to 150% of Po1 nom on output 1. Output 2 loaded with 25% of Po2 nom. Inhibit Function The output(s) of the converter may be enabled or disabled by means of a logic signal (TTL, CMOS, etc.) applied to the inhibit pin. No output voltage overshoot will occur when the unit is turned on. If the inhibit function is not required the inhibit pin should be connected to Vi- to enable the output (active low logic, fail safe). -10 V to 0.8 V Converter inhibited or inhibit pin i left open: 50 25 Po 100 % Po nom 75 Fig. 11 Efficiency versus input voltage and load. Typical values (40IMX7-12-12-8). Adjustable Output Voltage Auxiliary Functions Converter operating: 40 2.4 V to Vi max 2.4 V to 75 V 06070 (20/40IMX7) (70/110IMX7) As a standard feature, all IMX7 converters offer adjustable output voltage(s) by using a control pin. If this pin is left opencircuit, the output voltage is set to Vo nom. The output voltage is adjustable in the range 75 to 105% Vo nom.The circuit works for single- and double-output models in a different way. For output voltages Vo > Vo nom, the minimum input voltage Vi min (see Electrical Input Data) increases proportionally to Vo/Vo nom. Single-output models with R-input: The R input (pin 13) is referenced to the secondary side of the converter. Adjustment of the output voltage is possible by means of either an external resistor or a voltage source. a) Adjustment by means of an external resistor: Depending upon the value of the required output voltage, a resistor Rext1 or Rext2 shall be connected as shown in the figure below: Vi+ 06131a i Vi+ Vo+ Rext1 Vi - R Fig. 12 If the inhibit is not used, the inhibit pin should be connected to Vi- Rext2 Vi- Vo- Fig. 13 Output voltage control with external resistor BCD20007 Rev AA Page 8 of 14 www.power-one.com IMX7 DC-DC Series Data Sheet 7-Watt DC-DC Converters (R) Either: Rext1 between the R pin and Vo- to achieve an output voltage adjustment range of Vo = 75 to 100% Vo nom (85 to 100% for 3.3 V outputs): Vo Rext1 4 k * --------- Vo nom - Vo or: Rext2 between the R pin and Vo+ to achieve an output voltage range of approximately Vo = 100 to 105 % Vo nom: a) Adjustment by means of an external resistor Rext. Programming of the output voltage by means of an external resistor Rext1 is possible within a limited range of 100 to 105% Vo nom. Rext should be connected between pin 4 and Vi -. The following table indicates suitable resistor values for typical output voltages under nominal conditions (Vi nom, Io = 0.5 Io nom), with paralleled outputs or equal load conditions on each output. Caution: Connection of Rext to Vi+ may damage the converter. (Vo - 2.5 V) Rext2 4 k * ------------------ 2.5 V * (Vo/Vo nom - 1) b) Adjustment by means of an external voltage Vext between Vo- and R pin. The control voltage is 1.96 to 2.62 V and allows for adjustment in the range of 75 to 105% Vo nom. Table 6: Rext for Vo > Vo nom approximate values (Vi nom, Io1, 2 = 0.5 Io1/2 nom) Vo * 2.5 V Vext -------- Vo nom Caution: Applying an external voltage >2.75 V may damage the converter. Vo [% Vo nom ] Rext [ kW] 105 to 108 (107 typically) 105 104 103 102 101 100 0 1.5 5.6 12 27 68 Note: Attempting to adjust the output below this range will cause the converter to shut down (hiccup mode). 06029a Vo+ Vi+ R + Vi- Rext2 4 k Vref = 2.5 V control circuit - + Vext Rext1 - Vo- b) Adjustment by means of an external voltage source Vext. For external output voltages in the range of 75 to 105% Vo nom a voltage source Vext (0 to 20 V) is required, connected to the Trim-input (pin 4) and Vi-. The table below indicates typical Vo versus Vext values under nominal conditions (Vi nom, Io = 0.5 Io nom), with paralleled outputs or equal load conditions on each output. Direct paralleling of the Trim-inputs of converters connected in parallel is feasible. Note: Applying a control voltage greater than 20 V will set the converter into a hiccup mode. Table 7: Vext for Vo = 75 to 105% Vo nom; typical values (Vi nom, Io1, 2 = 0.5 Io1/2 nom) Fig. 14 Output voltage adjust for single-output models Double-output models with Trim input: The Trim input (pin 4) of double-output models is referenced to the primary side. The figure below shows the circuit topology. Adjustment of the output voltage is possible in the range of 100 to 105% Vo nom using an external resistor, or in the range of 75 to 105% Vo nom using an external voltage source. Vo [% Vo nom] Vext [V] 105 102 95 85 75 0 1.6 4.5 9 13 06089a Vi+ Vo1+ Trim Vo1- + Vext Rext - Vi- Control circuit Vref =2.5 V Vo2+ Vo2- Fig. 15 Output voltage adjust for double-output models BCD20007 Rev AA Page 9 of 14 www.power-one.com IMX7 DC-DC Series Data Sheet 7-Watt DC-DC Converters (R) Electromagnetic Compatibility (EMC) A suppressor diode together with an input filter form an effective protection against high input transient voltages which typically occur in many installations, but especially in battery-driven mobile applications. Electromagnetic Immunity Table 8: Immunity type tests Phenomenon Standard Class level Coupling mode 1 Value applied Waveform Source imped. Test procedure In oper. Perform. 2 Electrostatic discharge to case 5 IEC/EN 61000-4-2 2 contact discharge 4000 Vp 1/50 ns 330 yes B 3 air discharge 8000 Vp 10 positive and 10 negative discharges Electromagnetic field IEC/EN 61000-4-3 33 antenna 10 V/m AM 80% 1 kHz n.a. 80 - 1000 MHz yes A 3 antenna 10 V/m PM, 50% duty cycle, 200 Hz repetition frequ. n.a. 900 MHz yes A Electrical fast transients/burst IEC/EN 61000-4-4 4 direct +i/-i 4000 Vp bursts of 5/50 ns 5 kHz repet. rate, transients with 15 ms burst duration, and 300 ms period 50 60 s positive, 60 s negative transients per coupling mode yes B Surges IEC/EN 61000-4-5 34 +i/-i 2000 Vp 1.2/50 s 2 5 pos. and 5 neg. surges yes B RF conducted immunity IEC/EN 61000-4-6 3 +i/-i 50 0.15 to 80 MHz 150 yes A 1 2 3 4 5 3 VAC AM modul. 80% (140 dBV) 1 kHz i = input, o = output Performance criterion: A = normal operation, no deviation from specifications, B = temporary deviation from specs possible. Corresponds to the railway standard EN 50121-3-2:2000, table 9.1 External components required. R or Trim pin open, i pin connected with Vi-. Electromagnetic Emissions [dBV] [dBV/m] 07023a 80 EN 55022 B 35 EN 55022 B 30 07024a EN 55022 A 70 60 50 25 40 20 30 15 800 400 500 600 300 200 80 100 [MHz] 50 60 20 30 10 5 2 1 0.5 0.1 0.05 MHz 0.02 0.01 0 10 0 40 10 30 20 Fig. 16 Fig. 17 Typical conducted emissions (quasi-peak) at the input at Vi nom and Io nom according to EN 55011/22. Output leads 0.1 m, twisted. (40IMX7-15-15). External capacitor (1 F ceramic or film) required at the input for 70IMX7, 110IMX7 models. Typical radiated emissions at Vi nom, Io nom, measured according to EN 55011/22 with an antenna (distance 10 m). Output leads 0.1 m, twisted (70IMX-7-15-15). BCD20007 Rev AA Page 10 of 14 www.power-one.com IMX7 DC-DC Series Data Sheet 7-Watt DC-DC Converters (R) Immunity to Environmental Conditions Table 9: Mechanical and climatic stress Test Method Standard Test conditions Status Damp heat steady state IEC/EN 60068-2-78 MIL-STD-810D section 507.2 Temperature: Relative humidity: Duration: 40 2 C Ea Shock (half-sinusoidal) IEC/EN 60068-2-27 1 MIL-STD-810D section 516.3 Acceleration amplitude: Bump duration: Number of bumps: 100 gn = 981 m/s2 6 ms 18 (3 each direction) Converter operating Eb Bump (half-sinusoidal) IEC/EN 60068-2-29 MIL-STD-810D section 516.3 Acceleration amplitude: Bump duration: Number of bumps: 40 gn = 392 m/s2 6 ms 6000 (1000 each direction) Converter operating Fc Vibration (sinusoidal) IEC/EN 60068-2-6 Acceleration amplitude: Converter operating Frequency (1 Oct/min): Test duration: 0.35 mm (10 to 60 Hz) 5 gn = 49 m/s2 (60 to 2000 Hz) 10 to 2000 Hz 7.5 h (2.5 h each axis) Cab Converter not operating 93 +2/-3 % 56 days Fh Vibration, broad-band random (digital control) IEC/EN 60068-2-64 Acceleration spectral density: Frequency band: Acceleration magnitude: Test duration: 0.05 gn2/Hz 10 to 500 Hz 4.9 gn rms 3 h (1 h each axis) Converter operating Kb Salt mist, cyclic (sodium chloride NaCl solution) IEC/EN 60068-2-52 Concentration: Duration: Storage: Storage duration: Number of cycles: 5% (30 C) 2 h per cycle 40 C, 93% rel. humidity 22 h per cycle 3 Converter not operating 1 Covers also EN50155/EN61373 category 1, class B, body mounted (= chassis of coach) Temperatures Table 10: Temperature specifications, valid for air pressure of 800 to 1200 hPa (800 to 1200 mbar) Temperature -9 -8 (Standard) Characteristics Conditions min max min max Unit TA Ambient temperature Operational 1 -40 71 -40 85 C TC Case temperature -40 95 -40 105 TS Storage temperature -55 100 -55 105 1 See Thermal Considerations Non operational Failure Rates Table 11: MTBF and device hours MTBF Ground benign Ground fixed Ground mobile TC = 40 C TC = 40 C TC = 70 C TC = 50 C 40IMX7-05-8 (MIL-HDBK-217F) 1 672 000 h 248 000 h 83 800 h 84 800 h 40IMX7-15-15-8 (MIL-HDBK-217F) 1 640 000 h 214 000 h 83 000 h 77 000 h BCD20007 Rev AA Page 11 of 14 www.power-one.com IMX7 DC-DC Series Data Sheet 7-Watt DC-DC Converters 0.8 x 1.2 (0.03 x 0.05") pins 1.6 (0.06) PCB holes 50.8 (2") 3.4 (0.13") 4.6 (0.18") 1 4 14 5 x 3.81 (0.15") 20.3 (0.8") 3.81(0.15") 3 x 5.08 (0.2") Dimensions in mm. Weight: <20 g 3.81(0.15") 10 PT 2.2 self tapping screws 3.81(0.15") 45.7 (1.8") Measuring point of case temperature TC S09030a 3 x 5.08 (0.2") 1.27 (0.05") 10.5 (0.41") Case IMX7 with standard pinout 48 (1.9") S90002a 1 14 4 3.5 (0.14") 5 x 3.81 (0.15") Fig. 18 European Projection 23 (0.9") Mechanical Data 25.4 (1") (R) 10 43.2 (1.7") Fig. 19 8.25 (0.32") Open frame (option Z) 1.2 (0.5") Safety and Installation Instructions Pin Allocation 10011 Installation Instruction Installation of the converters must strictly follow the national safety regulations in compliance with the enclosure, mounting, creepage, clearance, casualty, markings, and segregation requirements of the end-use application. Connection to the system shall be made via a printed circuit board; see Mechanical Data. The converters should be connected to a secondary circuit. Do not open the converter. 14 13 12 11 10 1 2 Bottom view 3 Fig. 20 4 Footprint Table 12: Pin allocation (standard pinout and option Z) Pin Single output Double output Ensure that a converter failure does not result in a hazardous condition. 1 Vi+ Vi+ 2 Vi- Vi- To prevent excessive current flowing through the input lines in case of a short-circuit, an external fuse specified in section Input Fuse and Reverse Polarity Protection should be installed in the non-earthed input supply line. 3 i i 4 n.c. Trim 10 Vo- Vo1- 11 Vo+ Vo1+ 12 Vo- Vo2- 13 R Vo2+ 14 n.c. n.c. BCD20007 Rev AA Page 12 of 14 www.power-one.com IMX7 DC-DC Series Data Sheet 7-Watt DC-DC Converters (R) Standards and Approvals Isolation The converters are approved by UL and TUV according to UL 60950, CAN/CSA C22.2 No. 950-95 and IEC/EN 60950-1:2000. The electric strength test is performed in the factory as routine test in accordance with EN 50116 and IEC/EN 60950, and should not be repeated in the field. Power-One will not honor any warranty claims resulting from electric strength field tests. The converters have been evaluated for: * Building in * Supplementary insulation input to output, based on their maximum input voltage * Pollution degree 2 environment * Connecting the input to a secondary circuit, which is subject to a maximum transient rating of 1500 V for 20IMX4 and 40IMX7, 2000 V for 70IMX7, and 2500 for 110IMX7 models. Table 12: Electric strength test voltages Characteristic Input to output 20/40IMX 70IMX 110IMX o/o1 Unit Factory test >1 s 1.2 1.5 2.0 0.1 kVAC Equivalent DC volt. 1.5 2.0 2.5 0.15 kVDC The converters are subject to manufacturing surveillance in accordance with the above mentioned standards. Coupling capacitance 1.2 1.2 1.2 - nF Railway Applications Insulation resist. at 500 VDC >100 >100 >100 - M To comply with railway standards, all components are coated with a protective lacquer (except option Z). 1 Between outputs of double-output models Protection Degree The protection degree of the converters is IP 30, except openframe models (option Z). Description of Options Option Z: Open Frame Cleaning Agents In order to avoid possible damage, any penetration of cleaning fluids should be prevented, since the power supplies are not hermetical sealed. For applications, where the protection of the case is not necessary or in the case that the motherboard should be cleaned and lacquered with the converter fitted. However, the open-frame models (option Z) leave the factory unlacquered and may be cleaned and lacquered by the customer, for instance together with the mother board. Consult Power-One for suitable cleaning agents. NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not designed, intended for use in, or authorized for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written consent of the respective divisional president of Power-One, Inc. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice. BCD20007 Rev AA Page 13 of 14 www.power-one.com IMX7 DC-DC Series Data Sheet 7-Watt DC-DC Converters (R) EC Declaration of Conformity We Power-One AG Ackerstrasse 56, CH-8610 Uster declare under our sole responsibility that IMX7 Series DC-DC converters carrying the CEmark are in conformity with the provisions of the Low Voltage Directive (LVD) 73/23/EEC of the European Communities. Conformity with the directives is presumed by conformity with the following harmonised standards: * EN 61204:1995 (= IEC 61204:1993, modified) Low-voltage power supply devices, DC output - Performance characteristics and safety requirements * EN 60950-1:2000 (= IEC 60950-1:2000) Safety of information technology equipment. The installation instructions given in the corresponding data sheet describe correct installation leading to the presumption of conformity of the end product with the LVD. All IMX7 DC-DC converters are components, intended exclusively for inclusion within other equipment by an industrial assembly operation or by professional installers. They must not be operated as standalone products. Hence conformity with the Electromagnetic Compatibility Directive 89/336/EEC (EMC Directive) needs not to be declared. Nevertheless, guidance is provided in the data sheets on how conformity of the end product with EMC standards under the responsibility of the installer can be achieved, from which conformity with the EMC Directive can be presumed. Uster, 10 June 2006 Power-One AG Rolf Baldauf Vice President Engineering BCD20007 Rev AA Page 14 of 14 Johann Milavec Director Projects and IP www.power-one.com