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Применения > > Evaluation Kit for the MAX5069A (MAX5069AEVKIT)

Evaluation Kit for the MAX5069A (MAX5069AEVKIT) (MAX5069AEVKIT)

The MAX5069A evaluation kit (EV kit) is a fully assembled and tested circuit board that contains a high-efficiency, 120W isolated push-pull DC-DC converter. The circuit is configured for a +12V output voltage and provides up to 10A of output current. The circuit can be powered from either a +36V to +72V or -36V to -72V DC source, as used in the telecom/datacom markets, industrial environments, or in automotive 42V power systems.

High efficiency up to 91% is achieved at 10A while using two n-channel primary-side MOSFETs switching at up to 90% combined duty cycle. On the secondary-side, reduced output-voltage ripple and high efficiency is achieved through full-wave rectification from a centertapped planar transformer. Galvanic isolation up to 500V is achieved by an optocoupler and the planar surfacemount transformer. The optocoupler helps in providing isolated secondary-side regulation.

Operation at 500kHz allows the use of small magnetics and output capacitors. A SYNC input is featured to ease synchronization to an external clock. The EV kit provides cycle-by-cycle current-limit protection. Additional steadystate fault protection is provided by the integrating fault protection that reduces average dissipated power during continuous overload conditions. The MAX5069A also has a programmable input undervoltage lockout (UVLO) for protection during brownout conditions. The EV kit may be used to evaluate other versions of the MAX5069.

Warning: The MAX5069A EV kit is designed to operate with high voltages. Dangerous voltages are present on this EV kit and on equipment connected to it. Users who power up this EV kit or power the sources connected to it must be careful to follow safety procedures appropriate to working with high-voltage electrical equipment.

Under severe fault or failure conditions, this EV kit may dissipate large amounts of power, which could result in the mechanical ejection of a component or of component debris at high velocity. Operate this kit with care to avoid possible personal injury.


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