Psemi
San Diego, US · Founded 1990 · 562 employees on LinkedIn · 1 known investors
pSemi develops semiconductor technologies and RF integrated circuits, specifically the UltraCMOS+ silicon-on-insulator platform that combines high linearity and power handling for radio frequency applications serving telecommunications and industrial customers.
Also known as pSemi · pSemi Corporation
Investors · 1
Company profile
researched Aug 2026pSemi designs semiconductor products for radio-frequency and power management applications. Its catalog spans RF switches in numerous variants (high linearity, high isolation, low insertion loss, antenna tuning, broadband covering 0 Hz to 67 GHz, high power, automotive AEC-Q100 Grade 2-certified up to +105°C, extended temperature from -55°C to +125°C, and 75Ω wired broadband switches for DOCSIS 3.1), RF digital step attenuators (75Ω wired broadband, glitchless and general purpose), 2.4 GHz IoT and Wi-Fi front-end modules, phase shifters, monolithic phase and amplitude controllers (MPACs, including an MPAC-Doherty variant for Doherty power amplifier optimization), digital tunable capacitors, and power management devices.
Recent products highlighted by the company include the PE42424 SPDT switch, an 8.5 GHz RF switch in a 1.5 x 1.5 mm package aimed at Wi-Fi 6E and ultra-wideband applications; sub-6 GHz SP4T switches for massive MIMO base stations supporting hybrid beamforming architectures; and the PE26100 multi-level buck converter, which delivers up to 6 A output in a low-profile package and supports USB-PD and PPS fast-charging with multi-level buck and charge pump operating modes. The company also offers a 5G antenna-integrated module (AiM) co-designed with Murata, providing beamforming front ends at 26 GHz, 28 GHz and 39 GHz for 5G bands n257, n258, n260 and n261, using a modular approach intended for scalable antenna arrays.
▸Full profile — market position, technology, go-to-market
Market position
The company states a track record of design wins in top-tier smartphones and is an active member of 3GPP and other industry standards bodies.
pSemi positions its RF-SOI process and HaRP enhancement as delivering RF performance in linearity, isolation, insertion loss, power handling and ESD/reliability, together with high levels of integration in compact form factors, including monolithic CMOS devices that combine RF, analog and digital blocks.
Technology
pSemi's products are built on a proprietary RF-SOI (silicon-on-insulator) process that supports monolithic CMOS integration of RF, analog and digital functions on a single die. The company applies a HaRP technology enhancement that it states reduces gate lag and insertion loss drift in switch products. It positions RF-SOI as an alternative to traditional front-end module approaches, enabling monolithic IoT and Wi-Fi FEMs with power amplifier and receiver sensitivity, noise figure and size characteristics. Packaging and antenna integration technology supports its 5G antenna-integrated module products.
Go-to-market
pSemi sells components to electronics manufacturers and also operates an online store and a support function through its website. It co-designs modules with partners, such as the 5G antenna-integrated module developed with Murata.
Products address the mobile, automotive, consumer, communication infrastructure, cable, broadband, Internet of Things, and instrumentation and measurement markets, including smartphone makers, 5G massive MIMO base station equipment vendors, Wi-Fi and UWB device makers, DOCSIS 3.1 cable equipment providers, and USB-PD fast-charging device designers.
Compiled by commissioned research from 1 cited public sources — announcements, filings, and press listed under research sources below.
Timeline · 4
launches, deals, and filingspSemi co-designed a 5G antenna-integrated module (AiM) with Murata, providing 26 GHz, 28 GHz and 39 GHz beamforming front ends supporting bands n257, n258, n260 and n261.
Multi-level buck converter supporting up to 6 A output with multi-level buck and charge pump modes for USB-PD and PPS fast-charging systems in an ultra-thin, compact package.
Ultra-compact SPDT RF switch operating to 8.5 GHz with high linearity and fast switching, in a 1.5 x 1.5 mm package, targeting Wi-Fi 6E and ultra-wideband applications.
SP4T switches for hybrid beamforming architectures in sub-6 GHz massive MIMO base stations, emphasizing linearity, insertion loss and power handling.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 1
primary sources listed
- Psemipsemi.com · web
1 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Psemi do?
- pSemi develops RF and power management semiconductors, including RF switches, front-end modules and buck converters, based on RF-SOI technology.
- Who are Psemi's investors?
- Psemi's investors include Escalate Capital Partners.
- Where is Psemi headquartered?
- Psemi is headquartered in San Diego, US.