ISL8130IAZ

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The ISL8130IAZ is a DC/DC switching controller suitable for a wide range of applications. It is a 2-phase step-down DC/DC converter for the input voltage up to the range of 6 to about 24V and the output voltage range of 0.8 to 5.5V. It can deliver up to 30A current. With its 4MHz of switching frequency, it is able to deliver higher output current and power efficiency while keeping the small internal component size. The built-in Short-Circuit Protection (SCP), Over-Voltage Protection (OVP), and Temperature Protection (TP) features make the ISL8130IAZ a great choice for system level solutions.

ISL8130IAZ has two operating modes to deliver the output voltage. The forced PWM (pulse-width modulation) mode is used to provide a continuously fixed frequency while the skip cycle mode is used to reduce the average output voltage ripple. In this mode, only a portion of the instruction cycles are active, alternating between two or more voltage levels. This mode is used when the maximum demand of load current is lower than the average limit set by the IC. The single feedback circuit of ISL8130IAZ is able to measure the actual output voltage and offer basic system voltage regulation.

ISL8130IAZ is a highly efficient, compact and low-cost integrated solution for a wide range of applications such as netbooks, tablet PCs, mobile phones, and other portable battery-based electronics. It is especially suitable for energy-critical conditions such as battery-powered laptops, netbooks and other mobile computing devices, where the power consumption can be drastically reduced. In addition, it is also suitable for applications with high reliability and minimal downtime such as cloud services and medical products.

The simplified internal block diagram of ISL8130IAZ is shown in Figure 1. It consists of an under-voltage lock-out circuit, an oscillator, a duty-cycle-control block, an error amplifier, a compensation network and sense resistor. The under-voltage lock-out circuit prevents the gate drive output lower than the safe voltage. The oscillator circuits the switching frequency of the converter, which is set by the external resistor and capacitor. The duty cycle control block contains the drivers, voltage feedback comparator and logic circuitry. The error amplifier amplifies the voltage difference between the output voltage and the reference voltage. The compensation network is used to optimize the frequency and phase margin and damping of the converter. The sense resistor is used to detect the output current and provide current limit signal to the internal feedback loop.

The ISL8130IAZ provides an advanced feature of power saving mode. In this mode, the controller shuts down the switching behavior and minimize the input/output voltage drops. When the load current is below a certain threshold, the chip will enter the power saving mode and reduce the quiescent current consumption. This mode is effective in providing maximum power savings in low power applications.

In summary, the ISL8130IAZ is a great choice for high efficiency DC/DC switching controllers. It is a simple, versatile and cost-effective solution for powering various equipment from a single source. It is also suitable for battery-powered applications, where its integrated power-saving feature will ensure maximum efficiency in low-power applications.

The specific data is subject to PDF, and the above content is for reference