Description

The ISL6559CBZ is an electronic component belonging to the category of DC DC switching controllers. This component provides core-voltage regulation by driving 2 to 4 interleaved synchronous-rectified buck-converter channels in parallel. Interleaving the channel timing results in increased ripple frequency which reduces input and output ripple currents. The reduction in ripple results in lower component cost, reduced dissipation, and a smaller implementation area.

Specifications and Features

The ISL6559CBZ is a multi-phase power conversion electronic component with 2, 3, or 4 phase operation and active channel current balancing. It features precision rDS(ON) current sharing that is lossless and low cost, input voltage of 12V or 5V bias, and precision CORE voltage regulation with ±1% system accuracy over temperature. The component also has a microprocessor voltage identification input, programmable droop voltage, fast transient recovery time, over current protection, digital soft start, threshold sensitive enable input, high ripple frequency (160kHz to 4MHz), QFN Package, and is Pb-Free Available (RoHS Compliant).

Application Scenarios

The ISL6559CBZ is ideal for the following applications:

• AMD Hammer Family Processor Voltage Regulator
• Low Output Voltage, High Current DC-DC Converters
• Voltage Regulator Modules

Comparison

• Multi-phase power conversion with 2, 3, or 4 phase operation
• Precision rDS(ON) current sharing that is lossless and low cost
• Precision CORE voltage regulation
• High Ripple Frequency reduces input and output ripple currents

• The ISL6559CBZ is not suitable for applications that require high voltage output
• The electronic component does not support multiparallel operation