ISL6549LOW-EVAL1

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The ISL6549LOW-EVAL1 is an evaluation board with an integrated circuit that provides a high-efficiency, high-power DC/DC & AC/DC (off-line) SMPS. It is intended as a demo or evaluation tool for prototyping, debugging, or troubleshooting purposes. It features a 200kHz to 1.5MHz switching frequency range, low input voltage range of 3.6V to 5.5V, and can deliver up to 4A of output current at an output voltage up to 100V. This presentation provides an overview of the evaluation board’s application field and working principle.

Overview of Application Field

The ISL6549LOW-EVAL1 is designed to demonstrate the capabilities of the ISL6549LOW DC/DC & AC/DC (off-line) SMPS. It is commonly used as a back-end power source for FPGA development boards, processor cores, LEDs, 5V & 12V voltage bus regulators, and power supply modules. It is also commonly used for applications requiring up to 4A and up to 100V output voltages, such as telecom power supplies (such as indoor unit power supplies), industrial applications (such as industrial factory PLC power supplies), and automotive applications (such as vehicle DC/DC converter modules). The evaluation board’s integrated ISL6549LOW provides a highly efficient power supply solution for any of these applications.

Working Principle

The ISL6549 LOW-EVAL1 is a high-efficiency DC/DC & AC/DC (off-line) SMPS, and its integrated ISL6549LOW component is designed to provide an efficient power delivery solution for up to 4A and up to 100V output voltage. It features a 200kHz to 1.5MHz switching frequency range, low input voltage range of 3.6V to 5.5V, and can deliver up to 4A of output current at an output voltage up to 100V. The evaluation board also includes a range of other features, such as an adjustable output voltage divider and an on-board resistor divider for setting the output voltage levels, as well as a PFC pre-conditioner for power factor correction. In addition, it also features a power good indicator, current limit setting, and shutdown terminals.

The integrated ISL6549LOW SMPS controller IC includes all of the necessary components for accurate power supply control, such as a voltage loop compensation, current loop compensation, over temperature protection, soft start, coupled inductor designs, and other features. It is able to detect up to 16 fold current sags degradation, and provides an indication of when the output power fails. In addition, the IC also provides a low standby power consumption and a steady state efficiency of up to 95%.

Conclusion

The ISL6549LOW-EVAL1 is a versatile evaluation board designed to demonstrate the capabilities of the integrated ISL6549LOW DC/DC & AC/DC (off-line) SMPS. It is commonly used as a back-end power source for FPGA development boards, processor cores, LEDs, 5V and 12V voltage bus regulators, and power supply modules. It can deliver up to 4A of output current at an output voltage up to 100V, while offering a highly efficient power delivery solution for any of these applications. The evaluation board also includes a range of integrated features, such as adjustable output voltage, power good indicator, current limit setting, and more. This makes it a great tool for any power supply or voltage regulation applications.

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