IBX15 Series Data Sheet Boost Converters Features RoHS-compliant for all 6 substances Wide input voltage range 12 to 154 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 11.5 Interruption time with external capacitor 54.9 0.45 2.16 EN 50155, 50121-3-2 observed 54.9 2.16 Safety-approved to IEC/EN 60950-1 and UL/CSA nd 60950-1 2 Ed. When the input voltage exceeds a predefined output voltage Description level, the input voltage is directly fed forward. The converters The boost converters were designed in accordance with the exhibit an input EMC-filter. standards EN 50155 and EN 50121-3-2 to meet the re- The boost converters are available in a fully enclosed case or quirements of various railway and industrial applications in open-frame (option Z). rugged environment. They are particularly suitable to expand the input voltage range of power supplies (e.g. 110IMY15 or 110IMY70 Series DC-DC converters). An additional circuit allows for providing a predefined interruption time. Table of Contents Page Page Description .......................................................................... 1 Electromagnetic Compatibility (EMC) ................................. 6 Model Selection .................................................................. 2 Immunity to Environmental Conditions ............................... 7 Functional Description ........................................................ 2 Mechanical Data ................................................................. 8 Electrical Input Data ............................................................ 3 Safety and Installation Instructions ..................................... 9 Electrical Output Data ......................................................... 4 Options ................................................................................ 9 Auxiliary Functions .............................................................. 5 Copyright 2016, Bel Power Solutions Inc. All rights reserved. MELCHER The Power Partners. BCD.00197 Rev AD, 10-Aug-2016 Page 1 of 9IBX15 Series Data Sheet Boost Converters Model Selection Table 1: Model selection 1 Input voltage Operating input range Output voltage Output current Type designation Efficiency Options V V V I i nom i o o nom min typ 2 12 V 8.0 50 VDC 25 50 VDC 3.0 A 12IBX15-25-0G Z 24 V 16.8 154 VDC 50 154 VDC 1.6 A 24IBX15-50-0G 89% 93% 36 V 25.2 154 VDC 50 154 VDC 2.2 A 36IBX15-50-0G 91% 95% 1 Efficiency at V = V , V = V I = I i i min o o nom, o o nom 2 In preparation V o Functional Description JM182 150 The IBX15 boost converter is designed as step-up converter in order to increase the input voltage V to the regulated boost i 125 voltage V . oBr 100 When V exceeds V , the output voltage follows V. The i oB tr i V = 80 V oB tr resulting voltage (see fig. 1) is within the range of V to oB tr 75 V , which is suitable for adequate DC-DC converters, e.g. i max V = 50 V oB tr 20IMX15 or 24IMX70 for 12IBX15-25 and 110IMY15 or 50 110IMY70 for 24/36IBX15-50. The IBX15 converters have no 25 input-to-output isolation isolation is provided by the DC-DC converters connected to the output. V 0 i 25 50 75 100 125 150 The inrush current is not limited, but the output capacitor of the Fig. 1 IBX15 and the input capacitors of the connected DC-DC V versus V depending on V . o i oB tr converters are relatively small. The switching frequency is approximately 2 200 kHz (inter- leaved). A current limiting circuit protects the main FETs from trimmed by resistor R to a higher level V . This allows BA oB tr overload. However, the output is not short-circuit proof. together with an external storage capacitor C the realization hu The logic is biased by an auxiliary converter with a switching of an interruption time as requested by the railway standard EN 50155. No other components are needed. frequency of approx. 350 kHz. The boost voltage V can be oB JM081b 12 111 Vo+ Vi+ 2 Boost 11 control D Chu hu logic + Auxiliary C converter hu 350 kHz 15 Signal logic 3 D Gi 13 4 Go R R PUL BA 17 16 PUL BA Fig. 2 Functional diagram MELCHER The Power Partners. BCD.00197 Rev AD, 10-Aug-2016 Page 2 of 9 PTC