Analog Devices LTM4655 | Demoboard DC2594A

Description

Demonstration circuit 2594A is a step-down DC/DC converter and an inverting DC/DC converter with a 13V to 28V input voltage range, +12V at 4A, and –12V at up to 2.5A outputs featuring the LTM4655. The LTM4655 is a EN55022B compliant 40V, dual 4A or single 8A step-down or 50W inverting DC/DC μModule® Regulator.The switching frequencies of both channels are set at 1.2MHz on DC2594A. If the output voltage collapses sufficiently due to an overload or short-circuit condition, the internal oscillator will fold-back to one-fifth of the LTM4655’s programmed switching frequency, protecting the power switch from damage.The two channels can be paralleled for higher output current. See the data sheet for more information on setting up the board for paralleling the two outputs.The LTM4655 data sheet gives a complete description of the device, its operation and application information. The data sheet must be read in conjunction with the demo manual prior to working on or modifying DC2594A.

Features

• Dual 4A/Single 8A Low EMI Switch Mode Power Supply
• EN55022 Class B Compliant-Two Fully Independent Channels, Each Configurable for Positive or Negative Output Voltage Polarity
• Output Voltage Range: 0.5V ≤ |VOUTn + – VOUTn –| ≤ 26.5V
• Wide Input Voltage Range: Up to 40V-3.1V or 3.6V Start-Up, Configuration-Dependent
• ±1.67% Total DC Output Voltage Error Over Line, Load and Temperature
• Analog Output Current Indicator (Positive-VOUT Only)
• LDOOUT: 5V Fixed, 25mA Capable LDO
• Parallel able with LTM4651/LTM4653
• Constant-Frequency Current Mode Control
• Power Good Indicators and Programmable Soft-Start
• Overcurrent and Over temperature Protection
• 16mm × 16mm × 5.01mm BGA Package

Typical applications

• Video, Imaging and Instrumentation
• Avionics
• Industrial Control Systems, Automated Test and Measurement

More information

• Datasheet
• IC product information