HTA20005D Datasheet | International Rectifier

Description The HTA Series of DC-DC converters is a family of 20W, single and dual output, high reliability devices designed to operate in extremely high temperature environments such as those encountered in oil exploration applications. Features include small size, low weight and high tolerance to environmental stresses such as wide temperature extremes, severe shock and vibration. All internal ponents are derated to meet the intended operating environment. Documentation including electrical stress and thermal analysis are available. The converters incorporate a fixed frequency single forward topology with magnetic feedback and internal EMI filter. All models include an external inhibit port and have an adjustable output voltage. They are enclosed in a hermetic 3.805" x 1.5" x 0.430" Al Si package and weigh less than 70grams. The package utilizes rugged ceramic feed-thru copper core pins and is sealed using parallel seam welding. Full environmental screening includes temperature cycling, constant acceleration, fine and gross leak, and burn-in. Nonscreened versions of the HTA converters are available for system development purposes. Variations in electrical specifications and screening to meet custom requirements can be acmodated. 200V Input, Single/Dual Output Features n 150 to 250V DC Input Range n Up to 20W Output Power n Single and Dual Output Models Include 3.3, 5, 12, 15, ±5, ±12 and ±15V n Internal EMI Filter n Magnetically Coupled Feedback n High Efficiency - to 76% n -35°C to +185°C Operating Case Temperature Range n 10MΩ @ 500VDC Isolation n Under-Voltage Lockout n Short Circuit and Overload Protection n Output Over Voltage Limiter n Adjustable Output Voltage n Synchronization Input and Output n External Inhibit n Low Weight, < 70grams Applications n Down Hole Exploration Tools Circuit Description The HTA series of converters utilize a single-ended forward topology with resonant reset. The nominal switching frequency is 500KHz. Electrical isolation and...