-
LATEST NEWS / PRODUCT & TECHNOLOGY / Si2 Min Read
STMicroelectronics released automotive-grade 600V/650V super-junction MOSFETs in STPOWER MDmesh DM9 AG series which deliver superior efficiency and ruggedness for on-board chargers (OBCs) and DC/DC converter applications in both hard- and soft-switching topologies.
With outstanding RDS(on) per die area and minimal gate charge, the silicon-based devices combine low energy losses with outstanding switching performance, setting a new benchmark figure of merit. Compared to the previous generation, the latest MDmesh DM9 technology ensures a tighter gate-source threshold voltage (VGS(th)) spread that results in sharper switching for lower turn-on and turn-off losses.
In addition, body-diode reverse recovery is improved, leveraging a new optimized process that also increases the MOSFETs’ overall ruggedness. The diode’s low reverse-recovery charge (Qrr) and fast recovery time (trr) make the MDmesh DM9 AG series ideal for phase-shift zero-voltage switching topologies that demand the utmost efficiency.
The family offers a selection of through-hole and surface-mount packages that help designers achieve a compact form factor with high power density and system reliability. The TO-247 LL (long-lead) is a popular through-hole option that eases design-in and leverages proven assembly processes. Among the surface-mount packages, the H2PAK-2 (2 leads) and H2PAK-7(7 leads) are optimized for bottom-side cooling with thermal substrates or PCBs featuring thermal vias or other enhancement. HU3PAK and ACEPACK™ SMIT topside-cooled surface-mount packages are also available.
The first device in the new STPOWER MDmesh DM9 AG series is the STH60N099DM9-2AG, a 27A AEC-Q101 qualified N-channel 600V device in H2PAK-2, with 76mΩ typical RDS(on). ST will expand the family to provide a full range of devices, covering a broad range of current ratings and RDS(on) from 23mΩ to 150mΩ.
Original – STMicroelectronics
-
LATEST NEWS / PRODUCT & TECHNOLOGY / Si2 Min Read
Vishay Intertechnology, Inc. introduced a new 80 V symmetric dual n-channel power MOSFET that combines high and low side TrenchFET® Gen IV MOSFETs in a single 3.3 mm by 3.3 mm PowerPAIR® 3x3FS package. For power conversion in industrial and telecom applications, the Vishay Siliconix SiZF4800LDT increases power density and efficiency, while enhancing thermal performance, reducing component counts, and simplifying designs.
This dual MOSFET can be used in place of two discrete devices typically specified in the PowerPAK 1212 package — saving 50 % board space. The device provides designers with a space-saving solution for synchronous buck converters, point of load (POL) converters, and half- and full-bridge power stages for DC/DC converters in radio base stations, industrial motor drives, welding equipment, and power tools. In these applications, the high and low side MOSFETs of the SiZF4800LDT form an optimized combination for 50 % duty cycles, while its logic level turn-on at 4.5 V simplifies circuit driving.
To increase power density, the MOSFET offers best in class on-resistance down to 18.5 mW typical at 4.5 V. This is 16 % lower than the closest competing device in the same package dimensions. For increased efficiency in high frequency switching applications, the SiZF4800LDT offers a low on-resistance times gate charge — a key figure of merit (FOM) for MOSFETs used in power conversion applications — of 131mW*nC and on-resistance times gain-drain charge
The device’s flip-chip technology enhances thermal dissipation — resulting in 54 % lower thermal resistance compared to competing MOSFETs. The SiZF4800LDT’s combination of low on-resistance and thermal resistance results in a continuous drain current of 36 A, which is 38 % higher than the closest competing device. The MOSFET features a unique pin configuration that enables a simplified PCB layout and supports shortened switching loops to minimize parasitic inductance. The SiZF4800LDT is 100 % Rg- and UIS-tested, RoHS-compliant, and halogen-free.
Competitor Comparison Table:
Part number SiZF4800LDT (New) Competitor SiZF4800LDTPerformance improved Package PowerPAIR 3x3FS PowerPAIR 3x3FS Dimensions (mm) 3.3 x 3.3 x 0.75 3.3 x 3.3 x 0.75 – Configuration Symmetric dual Symmetric dual – VDS (V) 80 80 – VGS (V) ± 20 ± 20 – RDS(on) (mΩ) @ 4.5 VGS Typ. 18.5 22 +16 % Max. 23.8 29 +18 % Qg (nC) @ 4.5 VGS Typ. 7.1 6.0 – FOM – 131 132 +1 % ID (A) Max. 36 26 +38 % RthJC (C/W) Max. 2.2 4.8 +54 % Original – Vishay Intertechnology
-
LATEST NEWS / PRODUCT & TECHNOLOGY / Si2 Min Read
Toshiba Electronic Devices & Storage Corporation has added DTMOSVI(HSD), power MOSFETs with high-speed diodes suitable for switching power supplies, including data centers and photovoltaic power conditioners, to its latest-generation DTMOSVI series with a super junction structure. Shipments of the first two products “TK042N65Z5” and “TK095N65Z5,” 650V N-channel power MOSFETs in TO-247 packages, start today.
The new products use high-speed diodes to improve the reverse recovery characteristics important for bridge circuit and inverter circuit applications. Against the standard DTMOSVI, they achieve a 65% reduction in reverse recovery time (trr), and an 88% reduction in reverse recovery charge (Qrr) (measurement conditions: -dIDR/dt= 100A/μs).
The DTMOSVI(HSD) process used in the new products improves on the reverse recovery characteristics of Toshiba’s DTMOSIV series with high-speed diodes (DTMOSIV(HSD)), and has a lower drain cut-off current at high temperatures. The figure of merit “drain-source On-resistance × gate-drain charges” is also lower. The high temperature drain cut-off current of TK042N65Z5 is approximately 90% lower, and the drain-source On-resistance × gate-drain charge 72% lower, than in Toshiba’s current TK62N60W5.
This advance will cut equipment power loss and help to improve efficiency. The TK042N65Z5 shows a maximum improvement in power supply efficiency over the current TK62N60W5 of about 0.4%, as measured in a 1.5kW LLC circuit.
A reference design, “1.6 kW Server Power Supply (Upgraded)”, that uses TK095N65Z5 is available on Toshiba’s website today. The company also offers tools that support circuit design for switching power supplies. Alongside the G0 SPICE model, which verifies circuit function in a short time, highly accurate G2 SPICE models that accurately reproduce transient characteristics are now available.
Toshiba plans to expand the DTMOSVI(HSD) line-up with the release of devices in TO-220 and TO-220SIS through-hole packages, and TOLL and DFN 8×8 surface-mount packages.
The company also will continue to expand its line-up of the DTMOSVI series beyond the already released 650V and 600V products and the new products with high-speed diodes. This will enhance switching power supply efficiency, contributing to energy-saving equipment.
Original – Toshiba
-
LATEST NEWS / Si / SiC / WBG2 Min Read
VMAX, a leading Chinese manufacturer of power electronics and motor drives for new energy vehicles, has selected the new CoolSiC™ hybrid discrete with TRENCHSTOP™ 5 Fast-Switching IGBT and CoolSiC Schottky Diode from Infineon Technologies AG for its next generation 6.6 kW OBC/DCDC on-board chargers.
Infineon’s components come in a D²PAK package and combine ultra-fast TRENCHSTOP 5 IGBTs with half-rated free-wheeling SiC Schottky barrier diodes to achieve a perfect cost-performance ratio for both hard and soft switching topologies. With their superior performance, optimized power density and leading quality, the power devices are ideally suited for VMAX’s on-board chargers.
“We are proud to choose Infineon’s CoolSiC Hybrid device in our next-generation OBC, achieving higher reliability, stability, improved performance, and power density. This deepens our already strong partnership with Infineon and drives technological application innovation through close collaboration, working together to promote the thriving development of new energy vehicles,” said Jinzhu Xu, PL Director& Chief Engineer, R&D Department at VMAX.
“We are excited to strengthen our partnership with VMAX with our highly efficient hybrid products,” said Robert Hermann, Vice President for Automotive High Voltage Chips and Discretes at Infineon. “Together, we will continue to drive e-mobility advancements, providing efficient solutions that meet the requirements of the industry in terms of performance, quality and system cost.”
With its fast, hard switching TRENCHSTOP 5 650 V IGBT co-packed with zero reverse recovery CoolSiC Schottky diode, the hybrid discrete benefits from very low switching losses at switching speeds above 50 kHz. This makes the device an excellent option for high-power electric vehicle charging systems.
In addition, the robust 5 th generation CoolSiC Schottky diode offers increased robustness against surge currents, maximizing reliability. Furthermore, the diffusion soldering of the SiC diode has improved the thermal resistance (R th) to the package for small chip sizes, resulting in increased power switching capability.
With these features, it enables optimum system reliability and longevity, meeting the stringent requirements of the automotive industry. To further maximize compatibility with existing designs, the product also features a pin-to-pin compatible design based on the widely used D²PAK package.
Original – Infineon Technologies