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The MAX5074 evaluation kit (EV kit) is a fully assembled
and tested circuit board that contains a high-efficiency,
14W, forward DC-DC converter in the industry-standard
1/8th-brick footprint. The circuit is configured for a 12V
output voltage and provides up to 1.2A of current.
Power for the circuit can be provided from a 36V to 72V
DC source as well as sources used in the telecom/datacom
markets, industrial environments, and in automotive
42V power systems.
The EV kit uses the MAX5074 IC that includes internal
power MOSFETs. High efficiency up to 85% at 1.2A is
achieved using an internally clamped two-transistor
topology. Part of the efficiency improvement is due to
the recovery of stored leakage and magnetizing inductance
energy at the primary side.
The MAX5074 is programmed to switch at 250kHz. The
undervoltage lockout (UVLO) threshold is programmed
to 30V and the integrated fault protection provides
effective fault management. Output galvanic isolation is
achieved by an optocoupler and the surface-mount
power transformer.
Warning: The MAX5074 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.
The EV kit user should not probe the circuit with an
oscilloscope probe and ground clip unless they have
experience with high voltages.
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