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KBVW006A0B41Z Datasheet(PDF) 8 Page - Lineage Power Corporation |
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KBVW006A0B41Z Datasheet(HTML) 8 Page - Lineage Power Corporation |
8 / 20 page GE Data Sheet KBVW006A0B Series Sixteenth-Brick Power Modules 36–75Vdc Input; 12.0Vdc Output; 6A Output Current July 9, 2013 ©2012 General Electric Company. All rights reserved. Page 8 Pre-Bias Startup The module starts up monotonically into pre-biased load from 0.0Vdc up to Vout - 0.6Vdc. Output Reverse Current with Pre-Bias Output Voltage The module does not sink appreciable current (current flow into the module) that can compromise the reliability of the product. This condition is valid for either during startup or shutdown over the output pre-bias voltage range of 0.0Vdc up to Vout -0.6Vdc. The test conditions for startup or shutdown are applicable for application and removal of input voltage, Vin or by enabling and disabling the module via remote On/Off. Output Voltage Programming Trimming allows the output voltage set point to be increased or decreased, this is accomplished by connecting an external resistor between the TRIM pin and either the VO(+) pin or the VO(-) pin. VO(+) VOTRIM VO(-) Rtrim-down LOAD VIN(+) ON/OFF VIN(-) Rtrim-up Figure 12. Circuit Configuration to Trim Output Voltage. Connecting an external resistor (Rtrim-down) between the TRIM pin and the VO(-) (or Sense(-)) pin decreases the output voltage set point. To maintain set point accuracy, the trim resistor tolerance should be ±1.0%. The following equation determines the required external resistor value to obtain a percentage output voltage change of ∆% 22 . 10 % 511 down trim R Where 100 % , , set o desired set o V V V For example, to trim-down the output voltage of the module by 8% to 11.04V, Rtrim-down is calculated as follows: 8 % 22 . 10 8 511 down trim R 655 . 53 down trim R Connecting an external resistor (Rtrim-up) between the TRIM pin and the VO(+) (or Sense (+)) pin increases the output voltage set point. The following equation determines the required external resistor value to obtain a percentage output voltage change of ∆%: 22 . 10 % 511 % 225 . 1 %) 100 ( 11 . 5 , set o up trim V R Where 100 % , , set o set o desired V V V For example, to trim-up the output voltage of the module by 5% to 12.6V, Rtrim-up is calculated is as follows: 5 % 22 . 10 5 511 5 225 . 1 ) 5 100 ( 0 . 12 11 . 5 up trim R 8 . 938 up trim R The voltage between the VO(+) and VO(–) terminals must not exceed the minimum output overvoltage protection value shown in the Feature Specifications table. This limit includes any increase in voltage due to remote-sense compensation and output voltage set-point adjustment trim. Although the output voltage can be increased by both the remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. The maximum increase is the larger of either the remote sense or the trim. The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. When using remote sense and trim, the output voltage of the module can be increased, which at the same output current would increase the power output of the module. Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power (Maximum rated power = VO,set x IO,max). Thermal Considerations The power modules operate in a variety of thermal environments; however, sufficient cooling should be provided to help ensure reliable operation. 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. The thermal reference point, Tref, used in the specifications for open frame modules is shown in Figure 13. For reliable operation this temperature should not exceed 125oC. |
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