Description:The ISL6228 IC is a dual channel synchronous-buck PWM controller featuring Intersil's Robust Ripple Regulator (R3) technology that delivers truly superior dynamic response to input voltage and output load transients. Integrated MOSFET drivers and bootstrap diodes result in fewer components and smaller implementation area. Intersil's R3 technology combines the best features of fixed-frequency and hysteretic PWMs while eliminating many of their shortcomings. R3 technology employs an innovative modulator that
The recommended layout and placement for the ISL6228IRTZ involves placing the input capacitors close to the VIN pin, and the output capacitors close to the VOUT pin. The high-current paths should be kept short and wide to minimize resistance and inductance. A solid ground plane is also recommended to reduce noise and improve thermal performance.
The compensation network for the ISL6228IRTZ can be optimized by selecting the right values for the compensation resistors and capacitors. A good starting point is to use the values recommended in the datasheet, and then adjust them based on the specific application requirements and performance metrics such as stability, transient response, and output impedance.
The ISL6228IRTZ has a maximum junction temperature of 150°C. To ensure reliable operation, the device should be mounted on a PCB with a solid ground plane and adequate thermal vias to dissipate heat. The device should also be placed in a well-ventilated area to prevent overheating.
To ensure EMC with the ISL6228IRTZ, it is recommended to use a shielded enclosure, keep the PCB layout compact, and use a common-mode choke to filter the input voltage. Additionally, the device should be placed away from other noise-sensitive components, and the output voltage should be filtered to reduce electromagnetic interference (EMI).
The ISL6228IRTZ is a high-reliability device with a mean time between failures (MTBF) of over 10 million hours. The device is also qualified to various industry standards such as AEC-Q100 and IEC 60747. The quality metrics include a low defect rate, high yield, and rigorous testing and inspection procedures.
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ISL6228IRTZ Overview
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