ACT41000
40 V Programmable Output, Synchronous RFPoL (Point of Load) Regulator with Integrated MOSFETs
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, RFPoL (Radio Frequency Point of Load) step down Regulator 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 mΩ 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 RFPoL 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
Product Categories
| Topology | Step-Down |
| Min Input Voltage(V) | 4.5 |
| Max Input Voltage(V) | 40 |
| Min Output Voltage(V) | 3 |
| Max Output Voltage(V) | 24 |
| Max Output Current(A) | 4 |
| Iq (typ)(mA) | 1.3 |
| Pin Count | 32 |
| Operating Junction Temperature(C) | -40 to 150 |
| Configurable Output Voltage Step Size(mV) | 12.5 |
| 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 |
ACT41000EVK-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.
ACT41000EVK1-104 Evaluation Kit
ACT41000EVK1-104 Evaluation Tool User's Guide
This document describes the characteristic and operation of the Qorvo ACT41000EVK1-104 evaluation kit (EVK). It provides setup and operation instructions, schematic, layout, BOM, and test data.
To communicate with the ACT41000EVK1-104 a USB Dongle and a Graphical User Interface (GUI) is provided.
This EVK demonstrates the ACT41000-104T 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 GUI
The ACT41000 Graphical User Interface (GUI) (rev. 2.1) 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.