ADP1055ACPZ-RL

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ADP1055ACPZ-RL

The ADP1055ACPZ-RL is a power management integrated circuit (PMIC) specifically used for digital power supplies. This PMIC is a highly integrated digital controller with a standard, fixed output digital architecture that is capable of driving a broad array of power rails with exceptional efficiency.

Application Field

The main application field for the ADP1055ACPZ-RL is AC/DC and DC/DC converters. It supports a wide range of operating conditions, achieving exceptional efficiency at various steps in power architecture in applications such as servers, gaming PCs, laptops, tablets, smartphones and other portable electronic devices. It is also used in the medical and industrial sectors.

Working Principle

The ADP1055ACPZ-RL is a two-phase synchronous buck controller that uses a digital control algorithm and a buck/boost regulating working principle. This ensures tight regulation and dynamic response to changing loading conditions. It implements a power path control architecture that reduces the input voltage ripple and manages the power flow between the feedback loop and the DC/DC converter. This enables the energy to be transmitted more effectively, amplifying the efficiency and reducing the losses.

This PMIC features aPower Path optimized programmable frequency, can drivean external voltage sense resistor to track its output voltage, and uses Vout tracking and differential current sensing to optimize the power path for varying loads. The controller also provides a selectable current limit which allows system designers to make key decisions based on the load currents requirements. It also includes external compensation pins to make easy synchronization with the load and to ensure frequency stability.

The ADP1055ACPZ-RL integrates a precision voltage reference, an external MOSFET gate driver, and several protection mechanisms including cycle by cycle current limit, hiccup mode, soft start, and over temperature. It also integrates counters to handle the minimum and maximum on-time, having an adjustable dead time to ensure cross conduction prevention.

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