High voltage DC-DC converters, Non isolated Converter for Military use

Military High Voltage, Non-Isolated DC-DC Converters

Featuring adjustable output voltage and output current

The high input voltage non-isolated DC-DC converters offer unique solutions for converting high-powered, variable voltages to a wide range of output voltages. The converter is a non-isolated buck-boost regulator, which employs synchronous rectification to achieve extremely high conversion efficiency. These products are suitable for use in Intermediate Bus Architectures, or to provide a regulated output voltage from a variable voltage source such as a battery. They can be configured to ‘buck’ the input voltage down or ‘boost’ the input voltage up with a single external setpoint resistor.

Operational Features

  • Ultra-high efficiency up to 97%
  • Wide input voltage ranges: 9-60 V (28V); 9-90 V (28VE)
  • Buck/Boost Mode available
  • Maximum input/output currents up to 40 A
  • Suitable for use in Intermediate Bus Architectures
  • On-board input and output filtering
  • No minimum load requirement
  • -55°C to +100°C Operating Temperature
  • Remote sense and wide output voltage trim (Half-brick only)

Protection/Control Features

  • Input under-voltage lockout (UVLO)
  • Output current limit (OCP) and short circuit protection
  • Output over-voltage protection (OVP)
  • Thermal shutdown (OTP)
  • Output voltage trim

Battery Charging

  • Key feature of Trimmable Current Limit
  • Provides the power conversion platform for battery charging
  • Output current limit is externally controlled for constant-current charging
  • Current can be set with an external resistor or an active circuit
  • Current analog signal provided for instrumentation and control functions
  • Ideal diode output stage with zero back-drive currents prevents discharge of battery when not charging
  • Output voltage set-point is independently controlled through trim pin
  • Unit will smoothly transition between current and voltage modes as charging cycle needs change