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HA1SV12008 Datasheet(PDF) 7 Page - Delta Electronics, Inc. |
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HA1SV12008 Datasheet(HTML) 7 Page - Delta Electronics, Inc. |
7 / 11 page DS_HA1SV12008_04082016 E-mail: dcdc@deltaww.com http://www.deltaww.com/dcdc P7 The output voltage can be increased by both the remote sense and the trim, however the maximum increase is the larger of either the remote sense or the trim, not the sum of both. When using remote sense and trim, the output voltage of the module is usually increased, which increases the power output of the module with the same output current. Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power. Pin function The pin was difine as follow in figure 20 ,we will explain the pin function: +IN, -IN . DC voltage inputs. Gate IN. The Gate IN pin on a driver module may be used as a logic enable/disable input.When Gate IN is pull low (<1V,referenced to –Vin ),the module is turned off . when Gate IN is floating (open collector) ,the module is turned on .The open circuit voltage of Gate in PIN is less than 5V. Gate OUT. T he pulsed signal at the Gate OUT pin of a regulating driver module is used to synchronously drive the surge circuit in order to meet the RIA12 surge needed. If you don’t used this function, please floating it. +OUT, -OUT. DC voltage outputs. T(TRIM). Provides fixed or variable adjustment of the module output. Trimming down. Allows output voltage of the module to be trimmed down, with a decrease in efficiency .ripple as a percent of output voltage goes up and input range widens since input voltage dropout(loss of regulation) moves down Trimming up. Reverses the above effects. -Sense,+Sense. Provides for locating the point of optimal voltage regulation external to the converter. THERMAL CONSIDERATIONS Thermal management is an important part of the system design. To ensure proper, reliable operation, sufficient cooling of the power module is needed over the entire temperature range of the module. Convection cooling is usually the dominant mode of heat transfer. Hence, the choice of equipment to characterize the thermal performance of the power module is a wind tunnel. Thermal Testing Setup Delta’s DC/DC power modules are characterized in heated vertical wind tunnels that simulate the thermal environments encountered in most electronics equipment. This type of equipment commonly uses vertically mounted circuit cards in cabinet racks in which the power modules are mounted. The following figure shows the wind tunnel characterization setup. The power module is mounted on a test PWB and is vertically positioned within the wind tunnel. The space between the neighboring PWB and the top of the power module is constantly kept at 6.35mm (0.25’’). AIR FLOW MODULE PWB AIR VELOCITY AND AMBIENT TEMPERATURE SURED BELOW THE MODULE FANCING PWB Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches) Figure 15: Wind tunnel test setup Thermal Derating Heat can be removed by increasing airflow over the module. To enhance system reliability, the power module should always be operated below the maximum operating temperature. If the temperature exceeds the maximum module temperature, reliability of the unit may be affected. |
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