Linear Technology has introduced high reliability (MP-grade) versions of the LT1952/-1, LTC3900 and LT4430 devices.

All three devices combine to create a synchronous rectified isolated forward converter that is specified and production tested over a -55°C to 125°C operating junction temperature range.

The LT1952/-1 is a single switch forward controller with active transformer reset that provides timing signals to the secondary-side LTC3900 synchronous rectifier driver.

The LT4430 is a secondary-side optodriver with a precision reference voltage that completes the tightly regulated isolated forward converter circuit.

The LTC3900 and LT4430 are specified to a maximum operating junction temperature of 150°C. This type of forward converter design is well suited for 12V, 24V and 48V nominal input voltages, commonly found in telecom, datacom, industrial and military/aerospace applications.

The LT1952/-1 includes all of the features necessary to implement an active clamp transformer reset, which improves efficiencies and power densities compared to resonant reset techniques, said the supplier.

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