IC manufacturers (103)
- All manufacturers
Analog Devices
Infineon Technologies
Microchip
Onsemi
Renesas
ROHM
STMicroelectronics
Texas Instruments
- 3peak incorporated (28)
- Ablic (23)
- Acco Semiconductor (1)
- Advanced Power (4)
- Allegro Microsystems (100)
- Alpha & Omega Semiconductor (37)
- AnalogySemi (3)
- AnDAPT Inc (204)
- Anpec (13)
- AXElite (2)
- Backward (6)
- Bright Power Semiconductor (1)
- Broadcom (46)
- Cambridge GaN Devices (18)
- Chipanalog Micro (10)
- Cologne Chips (1)
- Convenient Power (1)
- Dialog Semiconductor (12)
- Diodes Incorporated (259)
- Divimath (8)
- Elmos AG (1)
- EPC (136)
- e-Peas Semiconductors (1)
- Eta Solutions Co. Ltd. (9)
- GaN Systems (8)
- GaNPower (3)
- Giantec (1)
- Gstek Wuxi (1)
- Helix Semiconductor (7)
- IKON (1)
- Indie Semiconductor (8)
- Innovision Semiconductor Inc (2)
- Intel (68)
- Inventchip Technology (3)
- ISSI (51)
- JoulWatt (20)
- KDPOF (3)
- Kinetic Technology (8)
- Lattice semiconductor Corporation (38)
- Littelfuse (1)
- Lumissil Microsystems (8)
- M3 Technology (M3Tek) (7)
- Macnica (22)
- Marvell Semiconductor (1)
- MaxLinear (181)
- Menlo Micro (1)
- MikroE (25)
- MindCet (2)
- Monolithic Power Systems (980)
- Navitas Semiconductor Inc (6)
- NewEdge Technologies, Inc. (1)
- Nexperia (266)
- Nisshinbo Micro Device Inc. (10)
- Novosense Micro (1)
- NXP (333)
- O2 Micro International Ltd (10)
- On Bright (7)
- Panasonic (2)
- PN Junction Semiconductor (2)
- Power Integrations (117)
- Powermat (1)
- Pulsiv (19)
- Qorvo (96)
- Realsil SuRealsil(tek) Microelectronics (1)
- Richtek (297)
- Sanken Electric Co., Ltd. (16)
- Sckipio (6)
- Semtech (86)
- SG-Micro (54)
- SiFive (2)
- Silanna Semiconductor (9)
- Silergy Corporation (33)
- Silicon Laboratory Inc. (108)
- Silicontent Technology (59)
- Silvertel (59)
- Skycore Semiconductors (1)
- Skyworks (33)
- Southchip (14)
- Summit Wireless (1)
- Tagore Tech (7)
- Taiwan Semiconductor (1)
- TDK Corporation (1)
- Tempo Semiconductor (1)
- Torex (37)
- Toshiba (25)
- Transphorm (21)
- TransSIP (2)
- Union (21)
- uPI Semiconductor (2)
- Valens Semiconductor (31)
- Wise Integration (3)
- Wolfspeed (23)
- Xilinx (22)
- XL Semiconductor (3)
- XYSemi (62)
Overview
| Topology | Other Topology |
| Input voltage | 400 V |
| IC revision | 1.0 |
Description
The ACT43950 is a constant-current capacitor charger. The ACT43850 is a high-voltage and high-power buck regulator. The ACT43750 controls a drain switch and provides a negative voltage for an RF PA device. This three-chip combination forms a compact, complete power supply system for radio frequency (RF) power amplifiers (PAs) that demand fast transient, high-current, pulsed loads. The three-chip combination can be evaluated with one, two, or three ICs on an EVK. These EVKs are referred to as Combo Boards or CB. This document describes the characteristics and operation of Qorvo’s three-chip ACT43950/43850/43750 Combo Board. It also describes how to use the Combo Board when it is separated into smaller boards. It provides setup and operation instructions, schematic, layout, BOM, GUI, and test data. Refer to the section of this document that matches the EVK you are testing.ACT43X50PCKCB1: This Combo Board contains the ACT43750, ACT43850, and ACT43950 ICs.ACT43X950PCKCB1: This Combo Board contains ACT43950 ICs.ACT43850PCKCB1: This Combo Board contains the ACT43750 and ACT43850 ICs.
Features
The first stage ACT43950 accepts a DC input voltage up to 400V and converts it into a regulated DC constant current to charge bulkcapacitors. The second stage ACT43850 takes up to 150V DC input to generate programmable output voltage from 20V to 65V at up to20A. The last stage is the ACT43750 which has two main functions. The first is to provide proper turn on sequencing for RFPAs. Thesecond is to control pulsed drain voltage switching for the RFPA.Qorvo recommends that the user connect EVK to a PC and use the graphical user interface (GUI) software. The GUI allows the user toenable/disable devices and program the exact voltage and current for the specific RF PA being tested. AC43950 does not haveregisters but can be enabled/disabled by a GPIO from the Dongle when using the ACT43850 GUI. The ACT43850 GUI gives the userfull control over the drain voltage, protection features, and gate voltage. The user can use the ACT43750 GUI to set the Idq bias currentrequirement, and the design autonomously finds and stores the optimal gate voltage for the Idq bias current. After the optimal gate biasvoltage is found, the user can then apply an RF signal to test the RF PA functionality.
Typical applications
- Pulsed Power Applications
- High Voltage Power Supplies
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Pins | PCB/Cable/Panel | Modularity | Type | Wire Section | C | VR(V (DC)) | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | Pitch(mm) | L(mm) | W(mm) | H(mm) | Packaging | Tol. C | Size | DF(%) | Ceramic Type | Fl(mm) | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | Mount | G(mm) | IR(A) | Working Voltage(V (AC)) | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCI SMT Flat Wire High Current Inductor, 2, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Pins2 | – | – | – | – | – | – | – | – | – | – | Length22.5 mm | Width22 mm | Height12 mm | – | – | Size2212 | – | – | – | Inductance68 µH | Performance Rated Current6.9 A | Saturation Current @ 10%8.25 A | Saturation Current @ 30%9.5 A | DC Resistance27.3 mΩ | Self Resonant Frequency5 MHz | MaterialMnZn | MountSMT | – | – | – | Operating Temperature -40 °C up to +125 °C | ||||
 | WR-TBL Series 2141 - 3.50 mm Vertical Entry Modular w. Rising Cage Clamp, 3, Rising Cage Clamp | Simulation– | Downloads6 files | Status Activei| Production is active. Expected lifetime: >10 years. | Pins3 | PCB/Cable/PanelPCB | ModularityYes | TypeVertical | Wire Section 30 to 16 (AWG) 0.05 to 1.31 (mm²) | – | – | – | – | – | Pitch3.5 mm | Length10.5 mm | – | – | PackagingBox | – | – | – | – | – | – | – | – | – | – | – | – | MountTHT | – | Rated Current10 A | Working Voltage130 V (AC) | Operating Temperature -30 °C up to +120 °C | |||
 | WR-PHD Pin Header - Single, 3, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | Pins3 | – | – | TypeStraight | – | – | – | – | – | Insulation Resistance1000 MΩ | Pitch2.54 mm | Length7.62 mm | – | – | PackagingBag | – | – | – | – | – | – | – | – | – | – | – | – | MountTHT | – | Rated Current3 A | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | |||
 | WR-PHD Pin Header - Single, 4, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | Pins4 | – | – | TypeStraight | – | – | – | – | – | Insulation Resistance1000 MΩ | Pitch2.54 mm | Length10.16 mm | – | – | PackagingBag | – | – | – | – | – | – | – | – | – | – | – | – | MountTHT | – | Rated Current3 A | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | |||
 | WCAP-FTBP Film Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTBP Film Capacitors | – | – | – | – | – | Capacitance4.7 µF | Rated Voltage250 V (DC) | Rate of Voltage Rise64 V/µs | Dissipation Factor0.1 % | Insulation Resistance2.13 GΩ | Pitch27.5 mm | Length31 mm | Width14 mm | Height23.5 mm | PackagingCarton | Capacitance±5% | SizePitch 27.5 mm | – | – | – | – | – | – | – | – | – | – | – | Pin length4 mm | – | – | Operating Temperature -40 °C up to +105 °C | ||||
 | WCAP-CSMH Mid and High Voltage, –, – | Downloads8 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSMH Mid and High Voltage | – | – | – | – | – | Capacitance100 nF | Rated Voltage630 V (DC) | – | – | Insulation Resistance1 GΩ | – | Length4.5 mm | Width3.2 mm | Height2 mm | Packaging7" Tape & Reel | Capacitance±10% | Size1812 | Dissipation Factor2.5 % | Ceramic TypeX7R Class II | Pad Dimension0.5 mm | – | – | – | – | – | – | – | – | – | – | – | Operating Temperature -55 °C up to +125 °C |