ISL6146DFRZ-TK

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The ISL6146DFRZ-TK is a product from Intersil, a provider of power management solutions and analog/mixed-signal components. This device is designed for use in telecom and datacom power systems to provide power up sequencing.

Application Field

The ISL6146DFRZ-TK is used in a variety of applications, such as telecom and datacom, hot-swap power systems, and system board level power sequencing. It provides power up sequencing, enable/disable and fault protection control of up to four point-of-load (POL) DC-DC converters. The device operates up to a supply voltage of 6V and can also be used in higher voltage applications, up to 28V.

Working Principle

The ISL6146DFRZ-TK devices utilizes a microcontroller core, network of complex commercial off the shelf (COTS) devices, and other digital and analog components to provide a fully regulated power up sequence with no external components. The device is designed to minimize risk to downstream components by sequencing up to four separate output loads with up to 500 ms of delay between each output. This delay can be adjusted externally. It also features optional external syncing of outputs and allows for synchronization to an external clock if required.

The ISL6146DFRZ-TK is configured using either a single phase or multi-phase setting on each output load. The single phase setting allows the load to be fully enabled within 500 ms after the supply voltages have ramped up to their predetermined level, while the multi-phase setting ramps up the output in discrete delays of up to 500 ms. The single phase setting is suitable for applications that require fast start-up and transient response. The multi-phase setting is suitable for applications that require more stable output from startup.

The ISL6146DFRZ-TK is also designed with a failsafe circuit, which shuts down all outputs in the event of an oversized output load or undervoltage fault. With a wide operating temperature range of -40°C to +105°C, this device can handle extreme temperature conditions. It is also RoHS compliant, making it suitable for a variety of applications.

Conclusion

The ISL6146DFRZ-TK is an ideal device for providing power up sequencing, enable/disable and fault protection control of up to four point-of-load (POL) DC-DC converters. It allows for either a single phase or multi-phase setting on each output load, and features a failsafe circuit to ensure the safety of downstream components. With its wide operating range and RoHS compliance, this device can be used in a variety of telecom and datacom applications.

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