Optimised MOSFETs for datacoms and telecoms applications

7 April 2004 Power Electronics / Power Management

International Rectifier (IR) has added three devices to its DirectFET MOSFET family. The IRF6623, IRF6620, and IRF6609 20 V N-channel devices are optimised for VRM 10 power systems and high frequency, high current DC-DC converters.

Such converters are targeted at next generation Intel and AMD processors in high-end desktop computers and servers, as well as advanced telecom and datacom systems.

The IRF6623 features enhanced control MOSFET performance, with a 30% reduction in device on-resistance (RDS(on)) and gate charge (Qg) product, and is 50% smaller than other high-performing 20 V control MOSFETs on the market. In addition, the RDS(on) and Qg product at 4,5 V is 48,4 mΩ-nC, and the Miller charge (Qgd) is 4,0 nC, reducing switching losses.

IR's IRF6620 is ideal for synchronous MOSFET applications up to 35 A. The IRF6620 combines very low Qg, Qgd, and reverse recovery charge (QRR) with a 30% improvement in RDS(on) compared to other currently available high-performing 20 V synchronous MOSFETs.

Typical RDS(on) for this product is 2,1 mΩ (2,7 mΩ max) at 10 V. The IRF6609 is designed for the highest performance in high-current (33 A or more) synchronous MOSFET applications and combines very low Qg, Qgd and ultra-low QRR with typical device RDS(on) of 1,6 mΩ (2,0 mΩ max) at 10 V.

The 'metal can' construction of the DirectFET package reduces die-free package resistance and enables double-sided cooling. As a result, the package offers design advantages not previously available in standard plastic discrete packages.

Further reading:

Power efficiency and robustness in electronics design
Power Electronics / Power Management
Mouser Electronics recently announced a new eBook in collaboration with Analog Devices highlighting essential strategies for optimising power systems.

Read more...

---

USB Type-C-powered controllers
Future Electronics Power Electronics / Power Management
Diodes Incorporated has released two USB Type-C PD 3.1 extended power range sink controllers that can be embedded into battery-powered devices.

Read more...

---

Multicell battery monitoring
Altron Arrow Power Electronics / Power Management
The LTC6811 from Analog Devices is a multicell battery stack monitor that measures up to 12 series connected battery cells with a total measurement error of less than 1,2 mV.

Read more...

---

Full telemetry in tiny DC-DC converters
RS South Africa Power Electronics / Power Management
The FS160* series of µPOL DC-DC converters from TDK all offer full telemetry, provide increased performance, and are remarkable for extraordinary power density in the smallest sizes.

Read more...

---

Power IC supplies 1650 W
EBV Electrolink Power Electronics / Power Management
Power Integrations has announced a two-fold increase in power output from the HiperLCS-2 chipset with the new device now being able to deliver up to 1650 W of continuous output power.

Read more...

---

High-voltage step-down DC-DC converter
Altron Arrow Power Electronics / Power Management
The MAX17793 is a high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operating over an input voltage range of 3 to 80 V.

Read more...

---

High-voltage contactors
RS South Africa Power Electronics / Power Management
TDK Corporation has announced two new additions to its high-voltage contactor portfolio for harsh environments: the HVC43MC with integrated mirror contact and the HVC45 with enhanced short-circuit current handling capability.

Read more...

---

Chokes rated at 36 A
RS South Africa Power Electronics / Power Management
TDK Corporation has launched the EPCOS SurfIND series, a new range of current-compensated ring core double chokes for high currents and surface mounting.

Read more...

---

RF arrestor provides robust protection
RFiber Solutions Power Electronics / Power Management
NexTek’s range of coaxial RF surge and lightning arrestors are designed and built to provide robust protection for any radio or coaxial RF transmission application.

Read more...

---

Wide-Bandgap Developer Forum 2025
Power Electronics / Power Management
To give designers the ultimate in design flexibility, the entire range of WBG power semiconductors will be provided including discretes, modules, and highly integrated solutions ranging from 40 V to 700 V for GaN and 400 V to 3,3 kV for SiC.

Read more...

---