ACT88320QI101-T

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The ACT88320QI101-T power management IC is a specialized IC used in a wide range of application fields. It is equipped with several features and functions, making it one of the most popular PMICs in the market today. In this article, we will take a look at the application fields and working principle of the ACT88320QI101-T.

The ACT88320QI101-T is an integrated power management solution with features such as voltage scaling and bridgeless Buck-Boost converter. This makes it suitable for applications that require high efficiency and robust power management. The most common applications for the device include mobile handsets, wireless access points, and consumer electronics. The ACT88320QI101-T also has the capability to be used in small-form-factor power systems due to its integrated dual-channel power supply, eliminating the need for external power management components for most applications.

The ACT88320QI101-T is equipped with two synchronous Buck converters, an adjustable low dropout linear regulator, and two high-side switches, as well as a low-side bypass switch. This gives it several advantages over other PMICs, including higher efficiency, lower switching losses, and better thermal performance. Additionally, the device features a 3-stage synchronous bridge-less Buck Boost converter, allowing it to effectively manage input voltages of up to +30V in a single-stage topology.

The ACT88320QI101-T features a power management subsystem that includes a Power Good management and energy saving features. The Power Good management allows the user to detect when the input voltage is abnormally high or low, and take appropriate actions to protect the system. The energy saving features allow the device to minimize power consumption and extend battery life.

The ACT88320QI101-T also features a rich set of programmable protection features, including overvoltage, undervoltage, overcurrent, and thermal protection. The device also has a Power Management Unit (PMU) and a Reset Management Unit (RMU). The PMU provides comprehensive power sequencing, sequencing timeouts, current limit, and fault management. The RMU delivers protection against soft reset and power cycling.

The ACT88320QI101-T is based on a Buck topology and works by controlling the output voltage using an input voltage and an internal reference voltage. The circuit diagram for the ACT88320QI101-T is shown below.

The circuit starts with the input voltage being applied to the device. The power from the input voltage is conditioned by the internal buck regulator, which is then applied to the load. The output voltage is monitored and controlled by the feedback control circuit in the device. This circuit compares the output voltage with a reference voltage and adjusts the internal buck regulator to maintain the output voltage at its desired level. The circuit also features a number of protection features, including overvoltage, overcurrent, and thermal protection.

In conclusion, the ACT88320QI101-T is a specialized PMIC used in a wide range of applications. It is equipped with features such as voltage scaling and bridgeless Buck-Boost converter, making it ideal for applications that require high efficiency and robust power management. Additionally, the device has a rich set of programmable protection features, allowing it to protect the system from damage caused by input voltages that are too high or low. The device also has the ability to minimize power consumption and extend battery life, making it an ideal choice for a wide range of applications.

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