24IBX15-50-0G

IBX15 BEL | Alldatasheet

Document overview

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• PDF pages: 11

Technical content

Features

• RoHS-compliant for all 6 substances
• 5 year warranty
• Wide input voltage range 16.8 to 160 VDC
• Output: 50 to 80 VDC
• Class III equipment (no isolation input/output)
• Extremely high efficiency
• Excellent surge and transient protection
• Externally adjustable output voltage
• Programmable undervoltage lockout and inhibit
• Interruption time with external capacitor
• EN 50155, 50121-3-2 observed Safety-approved to the latest edition of IEC/EN 62368-1 and UL/CSA 60950-1 Table of Contents Page Page 54.9 2.16" 54.9 2.16" 11.5 0.45"

tech.support@psbel.com belfuse.com/power-solutions BCD.00197 Rev AG, 09-Mar-2021 Page 2 of 11 IBX15 Series Boost Converters © 2021 Bel Power Solutions & Protection Model Selection Table 1: Model Selection Input voltage Operating input range Output Voltage Output Current Efficiency 1 Type designation Options Vi nom Vi Vo nom Io nom η min η typ 24 V 16.8 - 160 VDC 50 - 160 VDC 1.6 A 89 % 93 % 24IBX15-50-0G Z 36 V 25.2 - 160 VDC 50 - 160 VDC 2.2 A 91 % 95 % 36IBX15-50-0G

1 Efficiency at Vi = Vi min, Vo = Vo nom, Io = Io nom

The IBX15 boost converter is designed as step-up converter in order to increase the input voltage Vi to the regulated boost voltage VoBr. When Vi exceeds VoB tr, the output voltage follows Vi. The resulting voltage (see fig. 1) is within the range of VoB tr to Vi max, which is suitable for adequate DC-DC converters, e.g. 110IMY15 or 110IMY70 for 24/36IBX15-50. The IBX15 converters have no input-to-output isolation; isolation is provided by the DC-DC converters connected to the output. 150 100 25 50 75 100 125 150 Vo Vi 125 VoB tr = 80 V VoB tr = 50 V Fig. 1 Vo versus Vi depending on VoB tr The inrush current is not limited, but the output capacitor of the IBX15 and the input capacitors of the connected DC-DC converters are relatively small. The switching frequency is approximately 2× 200 kHz (inter leaved). A current limiting circuit protects the main FETs from overload. However, the output is not short-circuit proof. The logic is biased by an auxiliary converter with a switching frequency of approx. 350 kHz. The boost voltage VoB can be trimmed by resistor RBA to a higher level VoB tr. This allows together with an external storage capacitor Chu the realization of an interruption time as requested by the railway standard EN 50155. No other components are needed. Fig. 2 Functional diagram Boost control logic JM081b Auxiliary converter 350 kHz Signal logic PUL D BA RPUL Dhu Gi– Vi+ PTC Go– Vo+ RBA Chu Chu

tech.support@psbel.com belfuse.com/power-solutions BCD.00197 Rev AG, 09-Mar-2021 Page 3 of 11 IBX15 Series Boost Converters © 2021 Bel Power Solutions & Protection Electrical Input Data General conditions: - TA = 25 °C, unless TC is specified. Table 2: Input data Model 24IBX15-50-0G 36IBX15-50-0G Unit Characteristics Conditions min typ max min typ max Vi Operating input voltage 16.8 160 25.2 160 V Vi 2s Temporary input voltage 2 s 12 168 21.3 168 Vi abs Input voltage limits 2 s, without damage 176 176 ∆Vi o Voltage drop Vi – Vo Vi > VoB 1 1 Ii Typical input current Vi min, Io nom 8 6 A Ci Input capacitance for surge calculation 4 µF tstart Start-up time of Vo Vi → Vi min or after shutdown 500 500 ms Pi 0 No-load input power Vi min – Vi max, Io = 0 1.0 1.5 1.0 1.5 W Pi SD Input power with shutdown Vi min – Vi max, VPUL = 0 Input Protection and Fuse No fuse is incorporated inside the converter. Consequently, an external fuse or a circuit breaker at system level should be installed to protect against severe defects; see table 3. Reverse polarity protection is provided by an antiparallel diode across the input, causing the external input fuse or circuit breaker to trip. Note: The fuses in table 4 apply to batteries with Vi nom = 24 or 36 V. In applications using batteries with higher voltage, fuses with lower current may suit better. Table 3: Recommended external fuses in the non-earthed input line Converter model Fuse type 24IBX15-50-0G Littlefuse 218, 10 A / 250 VAC, fast 36IBX15-50-0G Littlefuse 218, 8 A / 250 VAC, fast, or: Schurter SPT 8 A, 300 VDC Programmable Undervoltage Lockout PUL The programmable input undervoltage lockout (PUL, pin 17) should be adjusted adequately in order to limit the input current. Table 4 shows the values of the resistor RPUL, connected between PUL and Vi–, versus the resultant minimum input voltage and the resultant maximum input current. Note: If PUL is connected to Vi–, the converter is disabled (shutdown). Table 4: Typical values for RPUL and the resultant turn-on input voltage Vi LO. Valid for version V105 (Rev. AE) or later. 24IBX15-50-0G 36IBX15-50-0G R PUL [kΩ] Vi LO [V] R PUL [kΩ] Vi LO [V] ∞ 15 ∞ 23 110 18 100 27 68 20 56 30 43 23 36 34 27 27 27 38

tech.support@psbel.com belfuse.com/power-solutions BCD.00197 Rev AG, 09-Mar-2021 Page 4 of 11 IBX15 Series Boost Converters © 2021 Bel Power Solutions & Protection Efficiency 0.4 0.8 Io / Io nom0 JM121 Vi = 24 V 100 η [%] 0.60.2 Vi = 36 V Fig. 3 Efficiency versus input voltage and output current (24IBX15-50-0G) Interruption Time The interruption time of a system comprised of a step-up converter IBX15 (Rev. AB or later) and connected converters can easily be increased by an external capacitor Chu and adjusting the boost voltage VoB tr to a higher level. As an example, fig. 4 shows a 36IBX15-50 supplying a DC-DC con verter 110IMY70-12. Formula for the external boost capacitor Chu: 2 – Vi min whereas: C hu = external boost capacitance [mF] P o = output power = input power of the supplied con verter [W] t hu = interruption or hold-up time [ms] V i min = min. input voltage of supplied converters [V] V oB tr = boost voltage trimmed using RBA [V] JM123 RPUL RBA Chu + Output +++ 36IBX15 110IMY70-12Input 0 0 10 20 [V] t JM122 ms 120 100 VChu Vo Fig. 4 System with increased interruption time Fig. 5 Increased interruption time. Vi = 110 V, Chu = 560 µF/100 V, Po = 90 W, VoB tr = 80 V, RBA = 0 Ω. (24IBX15-50-0G) The external boost capacitor is loaded by a current source to the preselected boost voltage VoB tr. This current source is activated after Vo has reached or exceeded VoB tr. If the input voltage is increasing further, the boost capacitor is not charged beyond VoB tr. Consequently, its rated voltage needs not to be much higher than VoB tr. In the case of input voltage loss, the output voltage VoB drops rapidly to VoB tr until the diode Dhu connects the output with the boost capacitor, sustaining the output voltage; see fig. 5. As long as Vi min of the supplied converter is not undercut (during thu), the output voltage of the supplied converter is not affected.

tech.support@psbel.com belfuse.com/power-solutions BCD.00197 Rev AG, 09-Mar-2021 Page 5 of 11 IBX15 Series Boost Converters © 2021 Bel Power Solutions & Protection Electrical Output Data General conditions: - TA = 25 °C, unless TC is specified. Vi < VoB min, Io < Io nom Table 5: Output data Output 24IBX15-50-0G 36IBX15-50-0G Unit Characteristics Conditions min typ max min typ max VoB r Boost voltage regulated Vi min, Io nom, R BA = ∞ 49 50 51 49 50 51 V VoB tr Boost voltage trim range depending on R BA 49 80 49 80 Io nom Nominal output current Vi min – Vi max, VoB r 1.6 2.2 A vow Static line / load regulation Vi min – VoB r, 0 – Io nom ±1 ±2 ±1 ±2 V vod Dynamic line / load regulation ±2 ±2 t d Dynamic recovery time 2 2 ms t hu Interruption time 1 Chu = 1000 µF, VoB tr = 50 V, Vi = Vi min - - ms t loadC Load time for Chu 1 - - s t hu Interruption time 1 Chu = 560 µF, VoB tr = 80 V, Vi = Vi min 10 11 10 11 ms t loadC Load time for Chu 1 12 15 18 12 15 18 s 1 For other values use the formula in section Interruption Time ! Parallel or Series Operation Not possible. Thermal Considerations If a converter, mounted on a PCB, is located in free, quasi-stationary air (convection cooling) at the indicated maximum ambient temperature TA max (see table Temperature spe ci fications) and is operated at its nominal operating conditions, the case temperature 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 are influenced by 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. Caution: The case temperature TC measured at the measuring point of case temperature TC (see Mechanical Data) shall under no circumstances exceed the specified maximum value. The installer must ensure that under all operating conditions TC remains within the limits stated in the table Temperature specifications. Overtemperature Protection The converters are protected from possible overheating by an internal temperature monitoring circuit. It shuts down the converter above the internal temperature limit, and automatically restarts, after the temperature dropped. 1.0 0.8 0.6 0.4 0.2 20 40 60 80 100 °C Io / Io nom JM180 TA Option Z 1.0 0.8 0.6 0.4 0.2 20 40 60 8 0 100 ° C Io / Io nom JM181 TA Option Z Fig. 6a 24IBX15: I o versus temperature Io nom = 1.6 A, Vi = 16.8 V, VoB tr = 50 V Fig. 6b 36IBX15: Io versus temperature Io nom = 2.2 A, Vi = 25.2 V, VoB tr = 50 V

tech.support@psbel.com belfuse.com/power-solutions BCD.00197 Rev AG, 09-Mar-2021 Page 6 of 11 IBX15 Series Boost Converters © 2021 Bel Power Solutions & Protection Auxiliary Functions Boost Voltage Adjust The regulated boost voltage VoB tr can be adjusted by an external adjust resistor RBA; see fig. 1. The values of RBA are specified in table 6. Table 6: Typical values for RBA and the resultant boost voltage VoB tr and the possible output current Io. 24IBX15-50-0G 36IBX15-50-0G R BA [kΩ] VoB tr [V] Io [A] VoB tr [V] Io [A] ∞ 50 1.60 50 2.20 121 55 1.42 55 1.95 46.5 60 1.27 60 1.75 23 65 1.05 65 1.45 11.2 70 0.92 70 1.26 4.3 75 0.84 75 1.16 0 80 0.79 80 1.08 Of course, the real output voltage Vo follows Vi when Vi is higher than VBr. However, the voltage on pin 11 will never exceed the adjusted value of VoB tr. The external capacitor Chu must only be rated to VoB tr. The max. output current will decrease with higher VoB tr, but the output power remains constant, because the supplied 110IMY converters need lower input current with higher input voltage. Out-OK Signal An open-collector signal controls the function of the boost converter. When VoBr is exceeded, the D-output is connected with a FET to Go– (pin 15); see table 7. Table 7: Out-OK data Characteristics Conditions min typ max Unit VOK Out-OK voltage Output okay, IOK < 50 mA 0.3 0.5 V IOK Out-OK current Output fail, VOK ≤ 80 V 15 60 µA

tech.support@psbel.com belfuse.com/power-solutions BCD.00197 Rev AG, 09-Mar-2021 Page 7 of 11 IBX15 Series Boost Converters © 2021 Bel Power Solutions & Protection Electromagnetic Compatibility (EMC) A suppressor diode together with the input choke form an effective protection against high input transient voltages which typically occur in many installations, but especially in battery-driven mobile ap plic ations. The auxiliary converter has a separate input filter. Electromagnetic Immunity Table 8: Electromagnetic immunity (type tests) Phenomenon Basic Standard Level Coupling mode 1 Value applied Waveform Source imped. Test procedure In oper. Perf. crit.2 Electrostatic discharge (to case) IEC/EN 61000-4-2 3 - contact discharge ±6000 Vp 1/50 ns 330 Ω 150 pF 10 pos. & 10 neg. discharges yes B Electromagnetic field IEC/EN 61000-4-3 x 4 antenna 20 V/m AM 80% / 1 kHz N/A 80 – 1000 MHz yes A 5 antenna

20 V/m

AM 80% / 1 kHz N/A 800 – 1000 MHz yes A

10 V/m 1400 – 2000 MHz

5 V/m 2000 – 2700 MHz

3 V/m 5100 – 6100 MHz

61000-4-4 3 6 direct coupling +i/-i/c ±2000 Vp bursts of 5/50 ns; 5 kHz over 15 ms; burst period: 300 ms 50 Ω 60 s positive 60 s negative transients per coupling mode yes A Surges IEC/EN 61000-4-5 3 +i/c, -i/c ±2000 Vp 1.2 / 50 µs 42 Ω 5 pos. & 5 neg. surges per coupling mode yes B 2 +i/-i ±1000 Vp 0.5 μF yes B Conducted disturbances IEC/EN 61000-4-6 3 7 +i/-i/c 10 Vrms AM 80% / 1 kHz 150 Ω 0.15 – 80 MHz yes A 1 i = input, o = output, c = case (not for option Z) 2 A = normal operation, no deviation from specification, B = temporary deviation from specs. possible. 3 Corresponds to EN 50121-3-2:2016 table 5.3 and exceeds EN 50121-4:2016 table 2.4. 4 Corresponds to EN 50121-3-2:2016 table 5.1 and exceeds EN 50121-4:2016 table 2.1. 5 Corresponds to EN 50121-3-2:2016 table 5.2 and EN 50121-4:2016 table 2.2. 6 Corresponds to EN 50121-3-2:2016 table 3.2 and EN 50121-4:2016 table 4.2. 7 Corresponds to EN 50121-3-2:2016 table 3.1 and EN 50121-4:2016 table 4.1.

tech.support@psbel.com belfuse.com/power-solutions BCD.00197 Rev AG, 09-Mar-2021 Page 8 of 11 IBX15 Series Boost Converters © 2021 Bel Power Solutions & Protection Electromagnetic Emissions The EMC requirements must be observed at the end product system level. However, the company tests the converters to EMC standards. The integrated input filter reduces the reflected input current and improves EMC features. Further improvements are possible by adding simple external filters; see fig. below. The large input capacitor C1 (720 µF /200 V) provides stability during surge tests. The other components are: C51 = C52 = 10 nF / 300 V, Y2 C2 = 4.7 nF / 300 V, Y2 C3 = 3 µF / 250 V, X7R C4 = 5 µF / 250 V, X7R L1 = 4.4 mH C51 C52 Vi C3 C1 case IBX15 Fig. 7 External filter for compliance with EN 50121-3-2 Fig. 8 Conducted emissions of 24IBX15-50-0G. Vi = 24 V, Vo = 50 V, 2 A; case connected to PE; with input filter fig. 7

tech.support@psbel.com belfuse.com/power-solutions BCD.00197 Rev AG, 09-Mar-2021 Page 9 of 11 IBX15 Series Boost Converters © 2021 Bel Power Solutions & Protection Immunity to Environmental Conditions Table 9: Mechanical and climatic stress Test method Standard Test Conditions Status Cab Damp heat steady state IEC/EN 60068-2-78 MIL-STD-810D section 507.2 Temperature: 40 ±2 °C Converter not operatingRelative humidity: 93 +2/-3 % Duration: 56 days Ad Cooling test steady state EN 50155:2007, clause 12.2.3 IEC/EN 60068-2-1 Temperature, duration: -40 °C, 2 h Converter not operatingPerformance test: +25 °C Bd Dry heat test steady state EN 50155:2007, clause 12.2.4 IEC/EN 60068-2-2 Temperature: 70 °C Converter operating Duration: 6 h Ka Salt mist test sodium chloride (NaCl) solution EN 50155:2007, clause 12.2.10 IEC/EN 60068-2-11 class ST2 Temperature: 35 ±2 °C Converter not operatingDuration: 16 h Fc Vibration (sinusoidal) IEC/EN 60068-2-6 MIL-STD-810D section 514.3 Acceleration amplitude: 0.35 mm (10 – 60 Hz) 5 gn = 49 m/s2 (60 - 2000 Hz) Converter operating Frequency (1 Oct/min): 10 – 2000 Hz Test duration: 7.5 h (2.5 h in each axis) Fh Random vibration broad band (digital control) & guidance IEC/EN 60068-2-64 Acceleration spectral density: 0.05 gn 2/Hz Converter operating Frequency band: 8 – 500 Hz Acceleration magnitude: 4.9 gn rms Test duration: 1.5 h (0.5 h in each axis) Ea Shock (half-sinusoidal) IEC/EN 60068-2-27 MIL-STD-810D section 516.3 Acceleration amplitude: 50 gn = 490 m/s2 Converter operating Bump duration: 11 ms Number of bumps: 18 (3 in each direction) Shock EN 50155:2007, clause 12.2.11 EN 61373 sect. 10 class B, body mounted 1 Acceleration amplitude: 5.1 gn Converter operating Bump duration: 30 ms Number of bumps: 18 (3 in each direction) Simulated long life testing at increased random vibration levels EN 50155:2007, clause 12.2.11 EN 61373 sect. 8 and 9 class B, body mounted 1 Acceleration spectral density: 0.02 gn 2/Hz Converter operating Frequency band: 5 – 150 Hz Acceleration magnitude: 0.8 gn rms Test duration: 18 (3 in each direction)

1 Body mounted = chassis of a railway coach

Table 10: Temperature specifications, valid for an air pressure of 800 – 1200 hPa (800 – 1200 mbar) Model -0G (with case) -0ZG (open frame) Unit Characteristics Conditions min typ max min typ max TA Ambient temperature Converter operating - 40 70 - 40 70 °CTC, TCZ Case temperature 1 - 40 100 - 40 120 TS Storage temperature Not operational - 55 85 - 55 85 Reliability Table 11: MTBF and device hours Ratings Model Ground benign Ground fixed Ground mobile Unit Case temperature 40 °C 40 °C 70 °C 50 °C MTBF accord. to Bellcore SR-332, issue 1 36IBX15-50 850 000 425 000 160 000 104 000 h

tech.support@psbel.com belfuse.com/power-solutions BCD.00197 Rev AG, 09-Mar-2021 Page 10 of 11 IBX15 Series Boost Converters © 2021 Bel Power Solutions & Protection Mechanical Data Dimensions are in mm (inches). Tolerances ±0.3 mm (unless noted) Recommended PCB hole diameter for the 1mm square pins: 1.4 mm 54.7 (2.15") 48.06 (1.89") 54.9 (2.16") 48.26 (1.91") 4 × M3 JM115b 45.72 (1.8") 5.08 (0.2") TC 11.5 +0.2 3.3 -0.1 5.0816 0.8 (0.03") for holes with □ 1.6 mm 50.8 (2") 41.2 (1.62") JM104c bottom view 4.1 (0.16") 9.6 (0.38") 45.72 (1.8") 5.08 (0.2") 6 x 5.08 (0.2") 0.8 (0.03") for holes with □ 1.6 mm TCZ Fig. 9 Case Zinc, weight approx. 80 g Fig. 10 Open frame (option Z), weight approx. 30 g Safety and Installation Instruction Pin Allocation Table 12: Pin allocation (standard and option Z) Pin Name Description 1 Vi+ Pos. input 2 Vi+ Pos. input 3 Gi- Neg. input 4 Gi- Neg. input

11 Chu External hold-up capacitor

12 Vo+ Pos. output voltage 13 Go- Neg. output (connected to pins 3 and 4) 14 - No pin

15 D Boost function okay

16 BA Boost voltage adjust

17 PUL Programmable undervoltage lockout / inhibit

tech.support@psbel.com belfuse.com/power-solutions BCD.00197 Rev AG, 09-Mar-2021 Page 11 of 11 IBX15 Series Boost Converters © 2021 Bel Power Solutions & Protection Installation Instructions Connection to the system shall be made via a printed circuit board with hole diameters of 1.5 mm for the pins. The converter must be connected to a secondary circuit. Do not open the converter! Ensure that a converter failure (e.g. by an internal short-circuit) does not result in hazardous conditions. Note: To prevent excessive current flowing through the input supply lines in case of a malfunction an external fuse should be installed in a non-earthed input supply line; see table 3. Standards, Approvals, Isolation The converters have been approved according to the latest edition of IEC/EN 62368-1 and UL/CSA 60950-1. The CE mark is fitted. All pins are tested against the case with 1500 VAC (2120 VDC) for ≥1 s as routine test in the factory according to EN 62911 and IEC/EN 60950. The converters are subject to manufacturing surveillance in accordance with the above mentioned standards and with ISO9001:2015. CB scheme is available. Railway Applications To comply with railway standards, all components are coated with a protective lacquer (except option Z). Protection Degree and Cleaning Liquids The protection degree of the converters is IP 40, except open-frame models (option Z). In order to avoid possible damage, any penetration of cleaning fluids should be prevented, since the converters are not hermeti - cally sealed. However, open-frame models (option Z) leave the factory unlacquered; they may be lacquered by the customer, for instance together with the mother board. Cleaning liquids are not permitted – except washing at room temperature with isopropyl alcohol and de-inonized/destilled water (1 : 1). The mother board can also be cleaned, before fitting the open-frame converter. Note: Other cleaning liquids may damage the adhesive joints of the ferrite cores. Options Option Z: Open-frame model (no case). 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.