Qorvo ACT41000 | Demoboard ACT41000EVK-104.E1

Description

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.

Features

• 4.5 V to 40 V Operational Input Voltage
• Programmable Output with Factory Defaults
• Output Voltage: 3 V to 24 V in 12.5 mV Step
• Output Current (Limit): Up to 4 A in 15.6 mA Step
• 450 kHz to 2.25 MHz Fixed-Frequency Current-Mode, with External Clock Sync. and Spread-Spectrum
• 5 V / 350 mA Self-Bias Buck Converter with
• 20 mA AUX LDO, Programmable Output Voltage
• I2C Interface, Fast-mode Plus (Fm+, 1 MHz)
• Protections: UVLO, OVP, UVP (Hiccup/Latch-off), OCP, TSD
• Thermally Enhanced 5 mm × 5 mm QFN Package
• Automotive AEC-Q100 Options Available (Contact Qorvo for conditions of AEC-Q100 options.)

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

• Datasheet