SAN DIEGO – APRIL 3, 2025 – pSemi Corporation, a leader in advanced power management and conversion technology, has filed a lawsuit to defend and enforce its intellectual property against alleged unauthorized use by Cirrus Logic, Inc. and Lion Semiconductor Inc.  The case involves three patents owned by pSemi:  U.S. Patent No. 12,113,438, U.S. Patent No. 12,143,010, and U.S. Patent No. 12,212,232.  pSemi’s lawsuit accuses Cirrus Logic and Lion Semiconductor of directly infringing, as well as inducing others to infringe, the three pSemi patents.

The leader in capacitive-based power conversion showcases the world’s first 4-level buck converter for battery charging applications alongside new charge pump and two-stage step-down DC-DC converters

New power products designed to solve power challenges in low-profile, high-energy density applications

In general, 4-level buck mode is enabled for higher input voltages, and 3-level buck mode for mid-to-low input voltages. Additionally, the device can be operated in fixed ratio, capacitor divider mode with divider ratios 2 and 3 when the input voltage is a programmable power source (PPS). Current delivery is up to 6A per device, with the option to parallel devices to achieve faster charging times, in all operation modes using a 1 mm height inductor. This allows the system to achieve equivalent power delivery and faster battery charge times regardless of the type of USB_PD (Power Delivery), PPS, or Qi wireless charging source.

pSemi will be showcasing these new breakthroughs during the 2025 Applied Power Electronics Conference(APEC) on March 16-20, 2025, at the Georgia World Congress Center in Atlanta at Murata Electronics’ Exhibit(booth #915). Laurence McGarry, director product line manager, pSemi, will also present more details regarding the world’s first 4-level buck converter during a presentation at APEC on March 18, 2025, from 3:45 p.m. ET – 4:15 p.m. ET in Expo Theatre 4.

In addition to these multi-level demonstrations, pSemi has also announced the PE24111, 3.3Vin, two-stage regulator capable of supplying up to 20A, and the PE25213 divide by 2 and 3 capacitor divider ahead of the APEC Conference.  

The PE24111: 3.3Vin, 20A, Two-stage Buck Regulators Powering, sub 10nm, Low Output Voltage Core Applications

The PE24111 expands pSemi’s portfolio of two-stage buck regulators that target applications requiring high efficiency in a low-profile form-factor (<1.2mm) applications. The device consists of a two-phase interleaved charge pump followed by an interleaved buck regulator stage. This power system greatly reduces the dependency on inductance for high efficiency solutions in small-footprint and height-constrained form-factors. The output voltage is selected with external feedback resistors or by an external DAC and can be adjusted between 0.35 and 0.85V. This makes the PE24111 ideal for step-down DC-DC converter solutions for low-profile point-of-load (POL) regulators, high-density, optical transceiver modules, core supplies, ASICs, and FGPAs. To achieve higher power delivery, the PE24111 can be connected in parallel–up to four devices–with synchronization capability.

Tatsuya Kubo, senior product marketing manager, pSemi, will be highlighting the PE24111 during a presentation entitled, “Advances in 2-stage Buck Regulator Bring Higher Power Delivery to Optical Transceivers,” at APEC on March 19, 2025, from 12:45 p.m. ET – 1:15 p.m. ET in Expo Theatre 3.

The PE25213: Providing Peak Efficiency of 99% Conversion Intermediate Step-Down Applications

The PE25213 is an ultra-high efficiency charge pump that is configurable to divide down an input voltage by two or three and delivers up to 10A with peak efficiency up to 99%. The device uses pSemi’s patented adiabatic or lossless switching architecture to maximize efficiency and reduce solution size.

The PE25213 supports an input voltage range of 5.7V to 15V in divide-by-2 mode and 8.4V to 15V in divide-by-3 mode. It is primarily used as a front-end converter to convert a two- or three-cell battery input to a 1-1.5S output for downstream regulator to improve overall system efficiency and extend run time. The PE25213 also offers a unique auto-switch mode to change the divide-down ratio during operation to avoid a downstream under-voltage lockout (UVLO) event at heavy system loading during low battery condition.

The PE25213 comes in a 4.545 mm × 2.715 mm 47-pin WLCSP package. The pinout is specially designed to be fully compatible with Type III PCB design to reduce system cost. It targets 2 and 3S battery input systems such as laptop and 12V input systems such as datacenter and networking applications.

PE562212: The Smallest, Fully Integrated RF-SOI FEM

Leveraging three decades of leadership in RF SOI innovation, the PE562212 provides flexibility and performance value for IoT device designers and manufacturers

With a 14-lead 1.8 × 1.8 × 0.63 mm LGA package (MSL3), the PE562212 is an IoT FEM specifically designed for space-constrained applications, delivering superior flexibility and value to IoT device makers. The PE562212 enables connectivity across Thread, Zigbee®, Bluetooth® BDR/EDR, Bluetooth Low Energy (Bluetooth LE), and low-to-medium throughput Wi-Fi® (MCS7) and 2.4 GHz proprietary applications. It can be used to connect everything from smart speakers, smart lighting, smart thermostats, and in-home appliances to IoT hubs, range extenders, wireless audio, wearables, sensors, asset tracking applications, industrial devices, and more to ensure link robustness.

The new IoT FEM is designed with both efficiency and linearity in mind as it enables higher data rate applications such as Wi-Fi, striking the delicate balance of adequate linear power with power efficiency. Powered by pSemi’s proprietary UltraCMOS technology®, the PE562212 leverages high-performance capabilities and integration for PCB-limited IoT applications with up to +21-dBm output power and digital Tx gain control of 1-dB steps with a 15-dB range. It also delivers industry-leading receive (Rx) capability (1.6 dB NF, typical) and low-loss bypass path (-0.6 dB, typical) with a GPIO control interface.

PE42447 supports frequency range from 10 MHz to 8 GHz for post-PA hybrid analog beamforming and in 5G massive MIMO applications

San Diego, CA – June 17, 2024 – pSemi® Corporation, a leader in the design and development of semiconductor integration and advanced connectivity, today announced the introduction of PE42447— a high power and linearity SP4T RF switch manufactured on pSemi’s advanced silicon-on-insulator (SOI) technology, now supporting frequency ranges across 10 MHz to 8 GHz. It delivers extremely low insertion loss and high linearity with high input power handling capability, making it ideal for hybrid beamforming in wireless infrastructure as well as any other applications in broad market that requires such exceptional performance.

Manufactured on pSemi’s patented next-generation UltraCMOS® technology and packaged on a 20-lead 4 × 4 mm LGA package, PE42447 features low insertion loss of 0.4 dB at 2.6 GHz and 0.5 dB at 3.8 GHz. This switch has exceptional linearity of 85 dBm IIP3, high power handling of up to 100 watts, and switching time of around 1 microsecond. Its tolerance of 115°C ambient temperature makes it ideal for applications in a rugged environment including but not limited to wireless infrastructure.

pSemi has introduced the PE42447—a high power and linearity SP4T RF switch now supporting frequency ranges across 10 MHz to 8 GHz.