Qorvo ACT41000 | Demoboard ACT41000EVK-104-REF01

Description

ACT41000-104-REF01 reference design provides both the drain and gate voltages for many of Qorvo’s RF PAs. It automatically searches for and optimizes the optimal RF PA gate voltage to set the correct Idq bias current. This reference design demonstrates how Qorvo’s ACT41000 significantly simplifies RF PA system level design and cost. The design is specifically configured for the QPA2211, but it can be easily modified for many other RF PAs.This document describes the characteristics and operation of the Qorvo ACT41000EVK-104 REF01 reference design. It provides setup and operation instructions, schematic, layout, BOM, GUI, and test data. The design demonstrates the ACT41000QI104.E1T (22V) power management IC. Other ACT41000QIxxx options can be evaluated on this EVK by replacing the IC and any other necessary components. The initial design is optimized for the QPA2211.

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

Typical applications

• RF PA (GaN/GaAs) Drain Bias / Power with IDQ Search, General Telecom and Industrial Power Supplies
• Telecom RF Modules, Radar Systems

More information

• IC product information