ATW28300S Datasheet | International Rectifier

Description The ATW28300S DC-DC converter features high power density and an extended temperature range for use in military and industrial applications. Designed to MIL-STD-704D input requirements, this device operates with a nominal 28VDC input with an adjustable output of 150 to 300V via external potentiometer. The circuit design incorporates a pulse width modulated push-pull topology operating in the feed-forward mode at a nominal switching frequency of 270KHz. Input to output isolation is achieved through the use of transformers in the forward and feedback circuits. The advanced feedback design provides fast loop response for superior line and load transient characteristics and offers greater reliability than devices incorporating optical feedback circuits. Manufactured in a facility fully qualified to MIL-PRF38534, this converter is available in four screening grades to satisfy a wide range of requirements. The CH grade is fully pliant to the requirements of MIL-PRF-38534 for class H. The HB grade is processed and screened to the class H requirement, but may not necessarily meet all of the other MILPRF-38534 requirements, e.g., element evaluation and periodic inspection not required. Both grades are tested to meet the plete group “A” test specification over the full military temperature range without output power deration. Two grades with more limited screening are also available for use in less demanding applications. For screening options, refer to device screening table. Variations in electrical, mechanical and screening can be acmodated. Contact IR San Jose for special requirements. Features n 18V to 40VDC Input Range (28VDC Nominal) n Short Circuit and Overload Protected n 22.8W/in3 Power Density n 30W Output Power n Adjustable Output Voltage n Fast Loop Response n Superior Transient Characteristics n Operating Temperature Range of -55°C to +125°C n Popular Industry Standard Pin-Out n Resistance Seam Welded Case for Superior Long Term Hermeticity n...