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EBVW017A0S14R0641Z Datasheet(PDF) 8 Page - Lineage Power Corporation |
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EBVW017A0S14R0641Z Datasheet(HTML) 8 Page - Lineage Power Corporation |
8 / 15 page Data Sheet April 11, 2013 EBVW017A0S14R0 Series Power Modules; DC-DC Converters 36-75Vdc Input; 14.0Vdc Output; 17A Output Current LINEAGE POWER 8 Feature Descriptions Overcurrent Protection To provide protection in a fault output overload condition, the module is equipped with internal current-limiting circuitry and can endure current limiting continuously. If the overcurrent condition causes the output voltage to fall greater than 4.0V from Vo,set, the module will shut down and remain latched off. The overcurrent latch is reset by either cycling the input power or by toggling the on/off pin for one second. If the output overload condition still exists when the module restarts, it will shut down again. This operation will continue indefinitely until the overcurrent condition is corrected. A factory configured auto-restart option (with overcurrent and overvoltage auto-restart managed as a group) is also available. An auto-restart feature continually attempts to restore the operation until fault condition is cleared. Remote On/Off The module contains a standard on/off control circuit reference to the VIN(-) terminal. Two factory configured remote on/off logic options are available. Positive logic remote on/off turns the module on during a logic-high voltage on the ON/OFF pin, and off during a logic low. Negative logic remote on/off turns the module off during a logic high, and on during a logic low. Negative logic, device code suffix "1," is the factory-preferred configuration. The On/Off circuit is powered from an internal bias supply, derived from the input voltage terminals. To turn the power module on and off, the user must supply a switch to control the voltage between the On/Off terminal and the VIN(-) terminal (Von/off). The switch can be an open collector or equivalent (see Figure 15). A logic low is Von/off = -0.3V to 0.8V. The typical Ion/off during a logic low (Vin=48V, On/Off Terminal=0.3V) is 147µA. The switch should maintain a logic-low voltage while sinking 310µA. During a logic high, the maximum Von/off generated by the power module is 8.2V. The maximum allowable leakage current of the switch at Von/off = 2.0V is 10µA. If using an external voltage source, the maximum voltage Von/off on the pin is 14.5V with respect to the VIN(-) terminal. If not using the remote on/off feature, perform one of the following to turn the unit on: For negative logic, short ON/OFF pin to VIN(-). For positive logic: leave ON/OFF pin open. Figure 15. Remote On/Off Implementation. Output Overvoltage Protection The module contains circuitry to detect and respond to output overvoltage conditions. If the overvoltage condition causes the output voltage to rise above the limit in the Specifications Table, the module will shut down and remain latched off. The overvoltage latch is reset by either cycling the input power, or by toggling the on/off pin for one second. If the output overvoltage condition still exists when the module restarts, it will shut down again. This operation will continue indefinitely until the overvoltage condition is corrected. A factory configured auto-restart option (with overcurrent and overvoltage auto-restart managed as a group) is also available. An auto-restart feature continually attempts to restore the operation until fault condition is cleared. Overtemperature Protection These modules feature an overtemperature protection circuit to safeguard against thermal damage. The circuit shuts down the module when the maximum device reference temperature is exceeded. The module will automatically restart once the reference temperature cools by ~25°C. Input Under/Over voltage Lockout At input voltages above or below the input under/over voltage lockout limits, module operation is disabled. The module will begin to operate when the input voltage level changes to within the under and overvoltage lockout limits. Thermal Considerations The power modules operate in a variety of thermal environments and sufficient cooling should be provided to help ensure reliable operation. Thermal considerations include ambient temperature, airflow, module power dissipation, and the need for increased reliability. A reduction in the operating temperature of the module will result in an increase in reliability. The thermal data presented here is based on physical measurements taken in a wind tunnel. Heat-dissipating components are mounted on the top side of the module. Heat is removed by conduction, convection and radiation to the surrounding environment. Proper cooling can be verified by measuring the thermal reference temperature (THx). Peak temperature (THx) occurs at the position indicated in Figure 18 and 19. For reliable operation this temperature should not exceed the listed temperature threshold. Figure 18. Location of the thermal reference temperature TH1. Do not exceed 113 °C. |
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