ACT41000

    RF Point-of-Load (POL) Regulator

    Key Features

    • 4.5 to 40 V operational input voltage
    • Programmable output voltage by I2C from 3 to 24 V in 12.5 mV steps
    • Programmable output current limit from 0 to 4 A in 256 steps
    • Integrated current DAC for bias detection and automatic system level bias threshold trigger
    • Fixed-frequency current mode control from 450 kHz - 2.25 MHz with external clock sync and 100% duty operation
    • 5 V bias, 350 mA buck converter
    • 20 mA AUX LDO programmable output 0.9 to 4.0 V

    Qorvo's ACT41000 is a programmable output, low noise, DC-to-DC buck converter with auxiliary bias supply regulators. This synchronous step-down voltage regulator supports a wide input voltage from 4.5 to 40 V and integrates both the high side and low side MOSFETS. These 50 m? RDSON transistors, driven by the optimized 5V self-biasing, enable high efficiency to reduce power losses.

    The product's main buck converter can be dynamically programed to an output voltage between 3 and 24 V in 12.5 mV steps via the I2C interface or analog feedback. It also can dynamically program output current between 0 and 4 A in 256 steps via the I2C interface in a constant-current (CC) operation mode. The main buck operates in a proprietary current mode control that supports external clock syncing for switching frequencies between 450 kHz and 2.25 MHz and spread-spectrum. ACT41000 has built-in iDAC for Bias Detection and automatic system level bias threshold trigger for PA Vdrain bias applications. The product also integrates a 5 V / 350 mA mini-buck converter and a 20 mA AUX LDO.

    ACT41000 is available in a 32-pin 5 mm x 5 mm QFN package with a power-optimized footprint and exposed pad for improved thermal performance.

    Typical Applications

      • Radar
      • Continuous-Wave RF
      • Satelite Communication
      • Electronic Warfare (EW)
      • RF Power Amplifiers
    Topology Step-Down
    Input Voltage(V) 4.5 to 40
    Configurable Output Voltage(V) 3 to 24
    Configurable Output Voltage Step Size(mV) 12.5
    Configurable Output Current Max(A) 4
    Configurable Output Current Step Size(mA) 15.6
    Output Noise(mVrms) 1.1
    Operation Frequency(kHz) 445 to 2,250
    Features Mini-buck: 350mA; LDO: 20mA; External Clock Sync; Spread-Spectrum; I2C;
    Package Type QFN, 32-pin
    Package(mm) 5.0 x 5.0
    RoHS Yes
    Lead Free Yes
    Halogen Free Yes
    ITAR Restricted No
    ECCN EAR99

    ACT41000EVK1-101.E1ACT41000EVK-101.E1 Evaluation Kit

    ACT41000EVK-101.E1 Evaluation Tool User's Guide

    This document describes the characteristic and operation of the Qorvo ACT41000EVK-101.E1 evaluation kit (EVK). It provides setup and operation instructions, schematic, layout, BOM, and test data.

    To communicate with the ACT41000EVK-101.E1 a USB Dongle and a Graphical User Interface (GUI) is provided.

    This EVK demonstrates the ACT41000-101.E1 power management IC, which has a 5V default output voltage.

    ACT41000EVK-104.E1 Evaluation Kit

    ACT41000EVK-104.E1 Evaluation Tool User's Guide

    This document describes the characteristic and operation of the Qorvo ACT41000EVK-104.E1 evaluation kit (EVK). It provides setup and operation instructions, schematic, layout, BOM, and test data.

    To communicate with the ACT41000EVK-104.E1 a USB Dongle and a Graphical User Interface (GUI) is provided.

    This EVK demonstrates the ACT41000-104.E1T power management IC, which has a 22V default output voltage. It is directly compatible with Qorvo’s QPA2211 GaN Ka-band RF power amplifier as well as many other Qorvo products with similar output voltages.

    ACT41000 GUIACT41000 GUI

    The ACT41000 Graphical User Interface (GUI) is packaged in a ZIP file that includes the software and all necessary drivers to communicate with the ACT41000 Evaluation Tool, as well as all descriptions how to use the tool.