LTM4655

• SSFM Jumper for Spread Spectrum Options
• CLKIN Inputs for External Sync
• PGOOD Signals for Each Output

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.

Demonstration circuit 2899A is a dual inverting DC/DC converter with a 13V to 28V input voltage range, two 12V outputs at up to 2.5A each 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 DC2899A. If the output voltage collapses sufficiently due to an overload or short-circuit condition, the internal oscillator will foldback to one-fifth of the LTM4655’s programmed switching frequency, protecting the power switch from damage.

Key features of this board include:

• SSFM Jumper for Spread Spectrum Options
• CLKIN Inputs for External Sync
• PGOOD Signals for Each Output

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 DC2899A.

• Designed to be used for 48V Power Systems as the 48V offers a higher power density.
• Integrated solution for hot-swap applications allowing a board to be safely inserted and removed from a live backplane.
• Ease in design as it uses micro modules that will utilize few external components
• High power and low voltage capability for FPGAs, microcontrollers, etc.

The AD-PS0005-RD reference design provides a comprehensive power solution for 48V systems, featuring multiple outputs and a hot-swappable capability for enhanced reliability and flexibility.

This system board integrates the following key components: LTC4286, a high-power positive hot-swap controller; LTM4660, a 60V/300W hybrid step-down µModule® bus converter that delivers the 12V output; LTM4681, a quad 31.25A µModule regulator with an advanced digital power management system; and LTM4655, a 40V dual 4A step-down or 50W inverting µModule regulator for versatile power conversion.

APPLICATIONS

• 48V Bench Test Equipment
• 48V System Data Center
• Microcontrollers and FPGAs

Demonstration circuit 2898A is a dual DC/DC converter with a 13V to 40V input voltage range, two 12V outputs at 4A each 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 DC2898A. If the output voltage collapses sufficiently due to an overload or short-circuit condition, the internal oscillator will foldback to one-fifth of the LTM4655’s programmed switching frequency, protecting the power switch from damage.

Key features of this board include:

• SSFM Jumper for Spread Spectrum Options
• CLKIN Inputs for External Sync
• PGOOD Signals for Each Output

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 DC2898A.