Electronic Components Datasheet Search |
|
70IMX4 Datasheet(PDF) 7 Page - Bel Fuse Inc. |
|
70IMX4 Datasheet(HTML) 7 Page - Bel Fuse Inc. |
7 / 12 page IMX4 Series Data Sheet 4 Watt DC-DC Converters BCD20006-G Rev AE, 16-Sep-2015 Page 7 of 12 MELCHER The Power Partners. Thermal Considerations If a converter, mounted on a PCB, is located in free, quasi- stationary 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. 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. Short Circuit Behavior 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. Output Overvoltage Protection 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. Connection in Series The outputs of single or dual-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. Fig. 9 Overload switch-off (hiccup mode). 70 100 Vo [%] t [ms] 05041a 0.3 s overload short circuit condition switch-off 0 Connection in Parallel Several converters with equal output voltage can be connected 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 Fig. 10 Vo versus Io (typ) of single-output models (20IMX4-05) Fig. 11 Vo versus Io (typ.) of dual-output models (±15 V), with load connected between Vo+ and Vo –. Fig. 12 Cross load regulation of dual-output models. Vo1 versus Io1 (typ) for various Io2 (40IMX4-1515). 14 14.5 15 15.5 16 16.5 Vo1 [V] 20 40 60 80 100 120 140 mA Io1 0 Io2 = 140 mA Io2 = 14 mA 05058a 5.25 5.0 4.75 4.5 4.25 4.0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 A Vo [V] 05056b Io 28.5 29 29.5 30 30.5 31 31.5 Vo1 + Vo2 [V] 20 40 60 80 100 120 140 mA 0 05057a Io |
Similar Part No. - 70IMX4 |
|
Similar Description - 70IMX4 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |