70IMX7-05-8G

IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters Features • RoHS lead-free-solder and lead-solder-exempted products are available. • Input voltage ranges up to 150 VDC • 1 or 2 isolated outputs up to 48 V • 1500 to 2000 VAC voltage withstand test • Extremely wide input voltage ranges 25.4 1.0" 10.5 0.42" • Immunity according to IEC/EN 61000-4-2, -3, -4, -5, -6 50.8 2.0" • High efficiency (typ. 84%) • Input undervoltage lockout • Inhibit input, adjustable output voltages • Flex power: flexible load distribution on outputs • Outputs no-load, overload, and short-circuit proof • High reliability and no derating • Operating ambient temperature – 40 to +85 °C • Thermal protection • Supplementary insulation • Planar technology for best mechanical stability Description • 2” × 1” case with 10.5 mm profile The IMX7/IMS7 Series of board-mountable 7 Watt DC-DC converters have 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 V to 150 V with six different models, the converters are available with single and electrically-isolated double outputs from 3.3 up to 48 V with flexible load distribution on double outputs. A shutdown input allows remote on/off. Features include efficient input and output filtering with good 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 outputs as for instances required in battery-supported systems, where the bus voltage may exceed the SELV limit of 60 V. The models 70IMX7 and 110IMX7 are CE-marked. Table of Contents Page Description ............................................................................. 1 Model Selection ..................................................................... 2 Functional Description ........................................................... 3 Electrical Input Data ............................................................... 4 Electrical Output Data ............................................................ 7 Auxiliary Functions ................................................................. 9 Safety-approved to IEC 60950-1 and UL/CSA 60950-1 2nd Ed. 1 1 70/110IMX7 models The circuitry is comprised of integral planar magnetics. All components are automatically assembled and securely 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 Electromagnetic Compatibility (EMC) .................................. 11 Immunity to Environmental Conditions ................................ 12 Mechanical Data .................................................................. 13 Safety and Installation Instructions ...................................... 13 Description of Options ......................................................... 14 Copyright © 2015, Bel Power Solutions Inc. All rights reserved. MELCHER BCD20007-G Rev AF, 31-Jul-2015 The Power Partners. Page 1 of 14 IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters Model Selection Table 1: Model Selection Output 1 Vo1 nom Io1 nom [ V] [A] 1 2 3 Output 2 1 Vo2 nom Io2 nom [ V] [A] 1 Output power Po nom [W ] Input voltage range [ V] Efficiency η typ η min [%] [%] Model Options 3.3 3.3 3.3 3.3 3.3 3.3 1.5 1.5 1.5 1.5 1.5 1.5 - - 5 5 5 5 5 5 8.4 – 36 14 – 36 16.82 – 75 36 – 75 40 – 121 60 – 150 2 74 75.5 74.7 77 76 74.5 78 79 79 79 78 78 20IMX7-03-8 24IMS7-03-9 40IMX7-03-8 48IMS7-03-9 70IMX7-03-8 110IMX7-03-8 Z, G Z, G Z, G Z, G Z, G Z, G 5.1 5.1 5.1 5.1 5.1 5.1 1.2 1.2 1.2 1.2 1.2 1.2 - - 6.1 6.1 6.1 6.1 6.1 6.1 8.4 – 36 14 – 36 16.82 – 75 36 – 75 40 – 121 60 – 150 3 75.5 77 79 78 75.5 76 78 80 81 81 78 79 20IMX7-05-8 24IMS7-05-9 40IMX7-05-8 48IMS7-05-9 70IMX7-05-8 110IMX7-05-8 M, Z, G Z, G M, Z, G Z, G M, Z, G M, Z, G 5 5 5 5 5 5 0.6 0.7 0.7 0.7 0.7 0.7 5 5 5 5 5 5 0.6 0.7 0.7 0.7 0.7 0.7 6 7 7 7 7 7 8.4 – 36 14 – 36 16.82 – 75 36 – 75 40 – 121 60 – 150 3 77 79 79.5 81.5 81 78 81 82 82 83 82 80 20IMX7-05-05-8 24IMS7-05-05-9 40IMX7-05-05-8 48IMS7-05-05-9 70IMX7-05-05-8 110IMX7-05-05-8 M, Z, G Z, G M, Z, G Z, G M, Z, G M, Z, G 12 12 12 12 12 12 0.25 0.3 0.3 0.3 0.3 0.3 12 12 12 12 12 12 0.25 0.3 0.3 0.3 0.3 0.3 6 7.2 7.2 7.2 7.2 7.2 8.4 – 36 14 – 36 16.82 – 75 36 – 75 40 – 121 60 – 150 3 80.5 81.5 82.5 82 83 80 83 85 84 84 85 83 20IMX7-12-12-8 24IMS7-12-12-9 40IMX7-12-12-8 48IMS7-12-12-9 70IMX7-12-12-8 110IMX7-12-12-8 M, Z, G Z, G M, Z, G Z, G M, Z, G M, Z, G 15 15 15 15 15 15 0.2 0.24 0.24 0.24 0.24 0.24 15 15 15 15 15 15 0.2 0.24 0.24 0.24 0.24 0.24 6 7.2 7.2 7.2 7.2 7.2 8.4 – 36 14 – 36 16.82 – 75 36 – 75 40 – 121 60 – 150 3 81 81.5 81 82 81.5 79 83 84 84 84 83 82 20IMX7-15-15-8 24IMS7-15-15-9 40IMX7-15-15-8 48IMS7-15-15-9 70IMX7-15-15-8 110IMX7-15-15-8 M, Z, G Z, G M, Z, G Z, G M, Z, G M, Z, G 24 24 24 24 24 24 0.13 0.15 0.15 0.15 0.15 0.15 24 24 24 24 24 24 0.13 0.15 0.15 0.15 0.15 0.15 6.2 7.2 7.2 7.2 7.2 7.2 8.4 – 36 14 – 36 16.82 – 75 36 – 75 40 – 121 60 – 150 3 79 82 82 82 80 81 83 84 84 84 83 84 20IMX7-24-24-8 24IMS7-24-24-9 40IMX7-24-24-8 48IMS7-24-24-9 70IMX7-24-24-8 110IMX7-24-24-8 M, Z, G Z, G M, Z, G Z, G M, Z, G M, Z, G Flexible load distribution on double-outputs possible. If only one output is used, 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. Up to 154 V for 2 s NFND: Not for new designs. Preferred for new designs Note: Use 20IMX7 to replace 24IMS7 and 40IMX7 to replace 48IMS7. MELCHER BCD20007-G Rev AF, 31-Jul-2015 The Power Partners. Page 2 of 14 IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters Part Number Description Input voltage range Vi 40 IMX7 - 05 - 05 -8 Z G 8.4 – 36 V .............................................. 20 14 – 36 V ............................................... 24 16.8 – 75 V ............................................ 40 36 – 75 V ............................................... 48 40 – 121 V ............................................. 70 60 – 150 V ........................................... 110 Series .............................................................. IMX7, IMS7 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 –40 to 71 °C ............................................... -9 Options: Surface mount version1 ............................................ M Open frame1 ..................................................................... Z RoHS-compliant for all six substances ........ G Obsolete option: C-pinout ............................................... C 1 Option M and Z exclude each other. Note: The sequence of options must follow the order above. Example: 40IMX7-05-05-8ZG: DC-DC converter, input voltage range 16.8 – 75 V, 2 outputs providing each 5 V, 700 mA, temperature range – 40 to 85 °C, open frame, RoHS compliant for all six substances. Functional Description 03042b The IMX7/IMS7 Series DC-DC converters are feedbackcontrolled flyback converters using current mode PWM (Pulse Width Modulation). Vi+ 1 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% of Vo nom, using either an external resistor or an external voltage source. Trim 4 Vi+ 1 11 Vo+ PWM i 3 10 Vo– 2 × 2200 pF 1500 V 12 Vi– 2 13 R n.c. 4 Fig. 1 Block diagram of single-output models 14 n.c. 10 Vo1– PWM i 3 13 Vo2+ 2 12 Vo2– Vi – For double-output models, the output voltage is sensed by a separate transformer winding close to the secondary and fed 03025a 11 Vo1+ 2 × 2200 pF 14 n.c. Fig. 2 Block diagram of double-output models back to the primary control circuit. Close magnetic coupling is provided by the planar construction, ensuring very good regulation, and allowing for flexible load distribution. The Trim input of double-output models is referenced to the primary side, and allows for programming the output voltages in the range of 100 to 105% of Vo nom by means of an external resistor, or within 75 to 100% of Vo nom, using 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 Io1 nom + Io2 nom for double-output models). The inhibit input i allows remote control of the outputs; pin i must be connected to Vi– to activate the converter. MELCHER BCD20007-G Rev AF, 31-Jul-2015 The Power Partners. Page 3 of 14 IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters Electrical Input Data General conditions: – TA = 25 °C, unless TC is specified. – Connector pin i connected with Vi–. – Trim or R input not connected. Table 2a: Input data of IMX7 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 switch on inh. release Rise time 2 t rise Vi nom Io nom converter inhibited 2.4 0.25 0.5 0.25 0.5 0.1 0.1 0.1 30 8 4.7 15 8 0.5 +0.8 –10 15 8 0.2 +0.8 –10 Vi max 2.4 Vi max or open or open 2.4 15 0.2 +0.8 –0.5 –0.5 – 0.5 1 1 1 1 I inr 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 mA 3 3 3 3.8 3.7 4.2 5.6 A approx. 400 approx. 400 approx. 400 approx. 300 kHz 10 mApp 50 55022 3 V Vi max 2.4 Vi max or open or open –0.5 Vi min – Vi max mA µF +0.8 –10 converter operating Input current when the converter is inhibited s ms converter inhibited I i inh 7 0.25 0.5 0.1 5 –10 6 0.5 150 12 converter operating 5 100 5 15 V 110 12 (for surge calculation) 4 70 50 5 5 Inhibit voltage 3 1507 121 60 12 Input capacitance 2 40 Unit typ max min typ max 40 5 Vinh 1 75 12 Ci Input RFI level conducted 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 A 30 A 20 A A 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 length of 0.1 m, leads twisted. Double-output models with both outputs in parallel. 70/110 IMX7 models need an external capacitor at the input, e.g., 1 µF film or ceramic. Source impedance according to ETS 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. Up to 154 V for 2 s Vo Vo nom trise tstart up 04008a t Fig. 3 Converter start-up and rise time MELCHER BCD20007-G Rev AF, 31-Jul-2015 The Power Partners. Page 4 of 14 IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters Table 2b: Input data of IMS7; general conditions as in table 2a Input 24IMS7 Characteristics Conditions Vi Input voltage range 1 Vi nom Nominal input voltage TC min – TC max I o = 0 – Io nom Vi sur Repetitive surge voltage abs. max input (3 s) t start up Converter 2 Worst case condition at Vi min and full load start-up time t rise switch on inh. release Rise time 2 Vi nom Io nom min 0.4 0.3 converter operating –10 converter inhibited 2.4 24 6 0.8 –10 Vi max 2.4 converter operating –0.5 –0.5 1 1 I inr 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 Vi RFI Input RFI level conducted EN 55022 3 3 4.0 V mA 3 A approx. 330 40 A µF 3.9 approx. 330 mA Vi max converter inhibited Vi min – Vi max 12 +0.8 or open Input current when the converter is inhibited s ms 0.5 +0.8 or open I i inh 0.6 0.1 5 (for surge calculation) 4 0.6 12 Inhibit voltage V 100 5 Input capacitance max 48 12 12 Unit 75 resistive load Vinh 3 typ capacitive load Ci 2 36 0.1 Io = 0, Vi min – Vi max 1 min 36 50 No load input current Inhibit current max 24 Ii o Iinh typ 14 48IMS7 kHz 30 mApp A 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 length of 0.1 m, leads twisted. Double-output models with both outputs in parallel. 70 /110 IMX7 models need an external capacitor at the input, e.g. 1 µF film or ceramic. Source impedance according to ETS 300132-2, version 4.3, at Vi nom MELCHER BCD20007-G Rev AF, 31-Jul-2015 The Power Partners. Page 5 of 14 IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters Input Transient Voltage Protection In many applications transient voltages on the input of the converter may occur and are possibly caused by short circuits between Vi+ and Vi–, where the network inductance may cause high energy pulses. 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 I PP overvoltage lockout at approx. 38 V Note: Suppressor diode D is only necessary for 20IMX7 models. To withstand 150 V transients according to 19 Pfl 1, applicable for 40IMX7 models, the same external circuitry with similar components as for IEC/EN 61000-4-5, level 2 compliance can be used. Input Fuse and Reverse Polarity Protection 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 for: – – – – 20IMX7 and 24IMS7 a fast 2 A (F2A) fuse 40IMX7 and 48IMS7 a fast 1 A (F1A) fuse 70IMX7 a fast 0.63 A (F.63A) fuse 110IMX7 a fast 0.63 A (F.63A) fuse. 24IMS7 2 53 V 600 W 40IMX7 2 100 V 1500 W 11 A Inrush Current 48IMS7 2 100 V 600 W 4.1 A 70IMX7 2 144 V 600 W 2.9 A 110IMX7 2 167 V 600 W 2.5 A 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. 1 2 7.7 A 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. A 4 3 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. 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. 04030a 2 1 0 0 20 40 60 80 µs Fig. 5 Typical inrush current at Vi nom , Po nom measured according to ETS 300132-2 (40IMX7). 07064 L Vi+ C + i D Vi– Fig. 4 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, see table 8 Model L C D 20IMX7 330 µH, 1 A, 0.115 Ω 68 µF, 63 V 1.5KE39A 24IMS7 – – – 40IMX7 330 µH, 0.6 A, 0.42 Ω 47 µF, 100 V 1.5KE100A 48IMS7 – – – 70IMX7 1000 µ H, 0.6 A, 0.42 Ω 22 µF, 160 V 1.5KE120A 110IMX7 330 µH, 0.2 A 22 µF, 200 V 1.5KE170A MELCHER BCD20007-G Rev AF, 31-Jul-2015 The Power Partners. Page 6 of 14 IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters Electrical Output Data General conditions: – TA = 25 °C, 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 Characteristics Conditions min Vo Output voltage setting Vi nom 3.28 Io nom Output current (nom.) Vi min – Vi max limit 2 3.3 V typ max min Current ∆Vo Line and load regulation Vi min – Vi max Io = (0.05 – 1) Io nom vo Output voltage noise Vi min – Vi max I o = I o nom Vi nom 5.13 V 1.2 2.7 5 20 110IMX7 max 3.32 5.07 1.78 6 Unit typ 1.5 Io L other models 5.1 V 1.56 2.0 ±1 ±1 % 70 70 mVpp 40 40 A 20 50 40 40 50 Vo clp Output overvoltage limit 7 Co ext Admissible capacitive load Vo d Dynamic Voltage deviat. load Recovery time regulation Vi nom Io nom ↔ 1/2 Io nom ±250 ±250 mV 1 1 ms Temperature coefficient ∆Vo /∆TC (TC min to TC max) Vi min – Vi max Io = (0.05 – 1) Io nom ±0.02 ±0.02 %/K td αVo Minimum load 1% 115 130 115 130 % 0 2500 0 2000 µF Table 5b: Output data for double-output models Output Vo nom Characteristics Conditions min IMX7 Vi nom I o1 = I o2 = 0.5 I o nom 4.96 4.95 5.04 11.90 5.05 11.88 12.10 14.88 12.12 14.85 15.12 23.81 15.15 23.75 24.19 24.25 IMS7 Vi nom I o1 = I o2 = 0.5 I o nom 4.92 4.92 5.08 11.82 5.08 11.82 12.18 14.78 12.18 14.78 15.22 23.64 15.22 23.64 24.36 24.36 Vo1 Vo2 Output voltage setting Vo1 Vo2 Io nom Io L ∆Vo1 2×5V Output current 20IMX7 Vi min – Vi max (nom.)1 other models Current limit 2 3 20IMX7 Vi nom other models Line regulation ∆Vo l Load regulation vo1, 2 Output voltage noise 4 2 × 12 V typ max min typ 2 ×15 V max min typ 2 × 24 V max min typ Unit max 2 × 0.6 2 × 0.25 2 × 0.2 2 × 0.13 2 × 0.7 2 × 0.3 2 × 0.24 2 × 0.15 A 1.8 2.1 0.7 0.9 0.5 0.7 0.35 0.45 1.8 2.0 0.8 1.0 0.55 0.9 0.38 0.5 Vi min – Vi max, I o nom ±1 Vi nom , (0.1 – 1) I o nom ±3 ±3 ±3 ±3 80 120 150 240 Vi min – Vi ma I o = I o nom 5 6 20 ±1 40 25 ±1 50 30 ±1 60 50 V % mVpp 100 Vo clp Output overvoltage limit 7 Co ext Admissible capacitive load 3 Vo d Dynamic Voltage deviat. load Recovery time regulation Vi nom Io nom ↔ 1/2 Io nom ±150 ±330 ±350 ±600 mV 1 1 1 1 ms Temperature coefficient of output voltage Vi min – Vi max (0.05 – 1) I o nom ±0.02 ±0.02 ±0.02 ±0.02 %/K td αVo 1 2 3 4 5 6 7 Minimum load 1% 115 130 115 130 115 130 115 130 % 0 2000 0 300 0 200 0 100 µF Each output is capable of delivering full output power Po nom according to table Model Selection. The current limit is primary side controlled. Io L is defined when Vo dropped to 85 to 94%. 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. MELCHER BCD20007-G Rev AF, 31-Jul-2015 The Power Partners. Page 7 of 14 IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters Thermal Considerations Output Overvoltage Protection If the 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 (see Mechanical Data) will approach 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, such as 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, TA may be higher or lower. The outputs are protected against overvoltage 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 overvoltage, 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. Caution: The case temperature TC measured at the measuring point of case temperature (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. Po /Po max 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. 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. JM017 Vo [V] 1.0 05087a 5.5 0.8 0.5 m/s = 100 LFM 5.0 natural cooling 4.5 0.6 0.4 4.0 0.2 0 20 40 60 80 100 °C TA 3.5 Fig. 6 3.0 0 Maximum allowed output power versus ambient temperature 0.4 0.8 1.2 Io [A] 1.6 Fig. 8a Short-Circuit Behavior Vo versus Io (typ.) of single-output models with Vo = 5.1 V 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 [V] 05086b 13 12 Vo [%] 11 overload short-circuit condition 100 10 switch-off 70 05041b 9 8 7 0 0.3 s t 0 0.2 0.4 0.6 0.8 Io total [A] Fig. 8b Fig. 7 Overload switch-off (hiccup mode). Vo versus Io (typ.) of double-output models (2 ×12 V) with both outputs in parallel MELCHER BCD20007-G Rev AF, 31-Jul-2015 The Power Partners. Page 8 of 14 IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters η [%] Typical Performance Curves 05088a 13.5 Vi nom Vi max Vi min 80 70 13 12.5 05052a 90 Vo1 [V] Io2 = 0.03 A 12 60 50 Io2 = 0.3 A 40 11.5 11 0.05 0.15 0.10 0.20 0.25 0.3 25 50 75 Po 100 % Po nom Io1 [A] Fig. 9 Fig. 11 Cross load regulation (typ.) of double-output models (2 ×12 V). The cross-load effect is negligible. Efficiency versus input voltage and load. Typical values (40IMX7-12-12-8). Vo1 , Vo2 [V] 05059a 12.8 12.4 Vo2 Vo1 12 11.6 11.2 0 30 60 90 120 150 Io1 [%] Io1 nom Fig. 10 Flexible load distribution on double-outputs models (2 ×12 V) with load variation from 0 to 150% of Po1 nom on output 1. Output 2 loaded with 25% of Po2 nom. Auxiliary Functions Adjustable Output Voltage Inhibit Function As a standard feature, all IMX7 and IMS7 converters offer adjustable output voltage(s) by using a control pin. If this pin is left open-circuit, the output voltage is set to Vo nom. The output voltage is adjustable in the range of 75 to 105% of 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. 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 converter 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). Converter operating: –10 V to 0.8 V Converter inhibited or inhibit pin i left open: 2.4 V to Vi max (20/40IMX7, 24/48IMS7) 2.4 V to 75 V (70/110IMX7) MELCHER BCD20007-G Rev AF, 31-Jul-2015 The Power Partners. Page 9 of 14 IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters Single-output models with R-input: 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. 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. Caution: Connection of Rext to Vi+ may damage the converter. 06029e Vi+ Vo+ Vref = 2.5 V 06089a Rext2 4 kΩ R + Control logic Vi– + Vo– Vo1+ Trim Vo1– + Vext Rext1 Vi+ Vext – Rext – Vi– Control circuit Vref 2.5 V Vo2+ Vo2– Fig. 12 Fig. 13 Output voltage adjust for single-output models Output voltage adjust for double-output models 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: Either: Rext1 between the R pin and Vo– to achieve an output voltage adjustment range of Vo = 75 to 100% of Vo nom (85 to 100% for 3.3 V outputs): Vo Rext1 ≈ 4 kΩ • ––––––––– Vo nom – Vo or: Rext2 between the R pin and Vo+ to achieve an output voltage range of approximately Vo = 100 to 105 % of Vo nom: Table 6: Rext for Vo > Vo nom approximate values (Vi nom, Io1 = Io2 = 0.5 Io1/2 nom) Vo [% Vo nom ] Ω] Rext [ kΩ 105 to 108 (107 typically) 105 104 103 102 101 100 0 1.5 5.6 12 27 68 ∞ Note: Applying a control voltage greater than 20 V will set the converter into a hiccup mode. (Vo – 2.5 V) Rext2 ≈ 4 kΩ • –––––––––––––––––– 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% of Vo nom. Vo • 2.5 V Vext ≈ –––––––– Vo nom Caution: Applying an external voltage >2.75 V may damage the converter. Note: Attempting to adjust the output below this range will cause the converter to shut down (hiccup mode). Double-output models with Trim input: b) Adjustment by means of an external voltage source Vext. For external output voltages in the range of 75 to 105% of 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. Table 7: Vext for Vo = 75 to 105% Vo nom; typical values (Vi nom, Io1 = Io2 = 0.5 Io1/2 nom) The Trim input (pin 4) of double-output models is referenced to the primary side. Figure 13 shows the circuitry. Adjustment of the output voltage is possible in the range of 100 to 105% of Vo nom using an external resistor, or in the range of 75 to 105% of Vo nom using an external voltage source. Vo [% Vo nom] Vext [V] ≥105 102 95 85 75 0 1.6 4.5 9 13 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 MELCHER BCD20007-G Rev AF, 31-Jul-2015 The Power Partners. Page 10 of 14 IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters 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 batterydriven 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. Perfcrit.2 Electrostatic discharge to case 5 IEC/EN 61000-4-2 2 contact discharge 4000 Vp 1/50 ns 330 Ω yes B 3 air discharge 8000 Vp 10 positive and 10 negative discharges Electromagnetic field IEC/EN 36 23 antenna 10 V/m 3 V/m 3 AM 80% 1 kHz n.a. 80 – 1000 MHz yes A ENV 50204 3 23 antenna 10 V/m 3 V/m 3 PM, 50% duty cycle, 200 Hz repetition frequ. n.a. 900 MHz yes A Electrical fast transients/burst IEC/EN 61000-4-4 4 33 direct +i/–i 50 Ω 60 s positive, 60 s negative transients per coupling mode yes B Surges IEC/EN 61000-4-5 24 13 4 +i/–i 1000 Vp 500 Vp 3 1.2/50 µs 42 Ω 0.5 µF 5 pos. and 5 neg. surges yes B RF conducted immunity IEC/EN 61000-4-6 3 23 +i/–i 10 VAC 3 VAC AM modul. 80% 1 kHz 50 Ω 0.15 to 80 MHz 150 Ω yes A 1 2 3 4 5 6 4000 Vp bursts of 5/50 ns 2000 Vp 3 5 kHz repet. rate, transients with 15 ms burst duration, and 300 ms period i = input, o = output Performance criterion: A = normal operation, no deviation from specifications, B = temporary deviation from specs possible Valid for 24IMS7 and 48IMS7 External components required R or Trim pin open, i pin connected with Vi– Corresponds to the railway standard EN 50121-3-2:2000, table 9.1 Electromagnetic Emissions PMM 8000 PLUS Name: 20_7_15 dbµV Date: 5.9.07 Time: 08:18 20IMX7-15-15-8 Peak 60 80 40 20 20 0.2 0.5 1 2 5 10 20 MHz EN 55022 A 60 40 0 Time: 08:00 Peak 0 0.2 0.5 1 2 5 10 40IMX7D24-con-p EN 55022 A 20IMX7D15-con-p 80 Date: 5.9.07 40IMX7-24-24-8 PMM 8000 PLUS Name: 40_7_24 dbµV 20 MHz Fig. 14a Fig. 14b 20IMX7-15-15-8: Typical conducted emissions (peak) at the input at Vi nom and Io nom according to EN 55011/22. Output leads 0.1 m, twisted. External input capacitor (1 µF ceramic + 100 µF electrolytic cap) 40IMX7-24-24-8: Typical conducted emissions (peak) at the input at Vi nom and Io nom according to EN 55011/22. Output leads 0.1 m, twisted. External input capacitor (1 µF ceramic + 47 µF electrolytic cap) MELCHER BCD20007-G Rev AF, 31-Jul-2015 The Power Partners. Page 11 of 14 IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters PMM 8000 PLUS Name: 110_7_05 dbµV Date: 5.9.07 110IMX7-05-8 Time: 08:00 Peak EN 55022 A 60 40 20 20 0.2 0.5 1 2 5 10 EN 55022 A 60 40 0 Time: 09:10 Peak 80 110IMX7-05-con-p 80 Date: 5.9.07 48IMS7-15-15-8 PMM 8000 PLUS Name: 48_7_15 dbµV 0 20 MHz 0.2 0.5 1 2 5 10 20 MHz Fig. 14c Fig. 15 110IMX7-05-8: Typical conducted emissions (peak) at the input at Vi nom and Io nom according to EN 55011/22. Output leads 0.1 m, twisted. External input capacitor (0.15 µF ceramic + 4.7 µF electrolytic cap). 48IMS7-15-15-8: Typical conducted emissions (peak) at the input at Vi nom and Io nom according to EN 55011/22. Output leads 0.1 m, twisted. External input capacitor (1 µF ceramic + 47 µF electrolytic cap). Immunity to Environmental Conditions Table 9: Mechanical and climatic stress Test Method Standard Test conditions Cab Damp heat steady state IEC/EN 60068-2-78 MIL-STD-810D section 507.2 Temperature: Relative humidity: Duration: 40 ±2 °C 93 +2/-3 % 56 days Converter not operating Status 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) 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 EN 50155/EN 61373 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 Characteristics Conditions TA Ambient temperature Operational 1 TC Case temperature TS Storage temperature 1 Non operational min -8 max min Unit max –40 71 –40 85 –40 95 –40 105 –55 100 –55 105 °C See Thermal Considerations MELCHER BCD20007-G Rev AF, 31-Jul-2015 The Power Partners. Page 12 of 14 IMX7, IMS7 Series Data Sheet 7-Watt DC-DC Converters Failure Rates Table 11: MTBF and device hours Standard Ground benign Ground fixed Ground mobile TC = 40 °C TC = 40 °C TC = 70 °C TC = 50 °C 24IMS7-05-9 MIL-HDBK-217F 634 000 321 000 188 000 271 000 40IMX7-12-12-8 MIL-HDBK-217F 851 000 395 000 253 000 342 000 Bellcore 3 019 000 1 510 000 809 000 409 000 Bellcore 3 320 000 1 660 000 871 000 447 000 40IMX7-05-05-8 50.8 (2") Case IMX7/IMS7 with standard pinout 4 14 10 3.81(0.15") PT 2.2 self tapping screws 45.7 (1.8") 1.27 (0.05") 10.5 (0.41") Measuring point of case temperature TC 50.8 0.8 × 1.2 Pins 5.08 5.08 3.81 10 4 25.4 Bottom view 3.81 3.81 3.81 3.81 3.81 48 (1.9") S90002b Bottom view 10 4 3.5 ±0.1 (0.14") 43.2 (1.7") TC Z 11.0 0.8 42.4 Measuring point case temper. TC 14 1 3 x 5.08 (0.2") 09031a 14 25.4 (1") 1 Core 4.2 Fig. 17 Safety and Installation Instructions Pin Allocation 10011 1 2 Bottom view 3 4 Fig. 18 Open-frame model (option Z) SMD pins (option M) 14 13 12 11 10 23 (0.9") 4.6 (0.18") European Projection 8.25 (0.32") Fig. 16 3.81(0.15") S09030b 20.3 (0.8") 3.81(0.15") Weight: 100 >100 >100 – MΩ Coupling capacitance The converters are subject to manufacturing surveillance in accordance with the above mentioned standards. Insulation resist. at 500 VDC Railway Applications 1 To comply with railway standards, all components are coated with a protective lacquer (except option Z). 2 Description of Options 3 Unit 1.2 Factory test >1 s Equivalent DC volt. o/o 3 1.5 kVAC according to IEC 60950, sect. 6.2, Telecom equipment; type test with 1.5 kVAC / 60 s (IEE 802.3).= 20/40IMX7 produced 2014 or later. The test voltage between outputs is not applied as routine test. necessary or in the case that the motherboard should be lacquered after fitting the converter; see Cleaning Liquids. Option M: SMD pins Option G: RoHS-6 This option allows surface mounting of the converters. Converters with a type designation ending by G are RoHScompliant for all six substances. Option Z: Open Frame For applications, where the protection by a housing is not NUCLEAR AND MEDICAL APPLICATIONS - These products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems. 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. Copyright © 2015, Bel Power Solutions Inc. All rights reserved. www.belpowersolutions.com/power MELCHER BCD20007-G Rev AF, 31-Jul-2015 The Power Partners. Page 14 of 14