330 W isolated DC-DC converter reference design for 48 V bricks

3 May 2006 Power Electronics / Power Management

International Rectifier's new reference design, featuring the IR2086S DC Bus Converter control IC and DirectFET power Mosfet chipset, the IRDC2086-330W, can simplify the development of 48 V input brick or embedded power supplies for networking, communications and high-end server applications.

The IRDC2086-330W is a 48 V to 9,6 V (35 A) unregulated DC bus converter that is 97% efficient, in a size 30% smaller than industry-standard quarter brick regulators. In addition, it reduces the number of powertrain components from three ICs and 14 FETs to a single IC and eight FETs.

The reference design chipset consists of the IR2086S primary-side, full-bridge control IC plus eight power train Mosfets: four IRF6646 80 V DirectFET primary-side Mosfets and four IRF6635 30 V DirectFET secondary-side synchronous Mosfets. Small Mosfets are used for bias switching (one IRF7830 80 V Mosfet in an SO-8) and the secondary clamp (two IRF6621 30 V Small Can DirectFET Mosfets).

The IR2086S full-bridge controller operates at high frequency (programmable to 500 kHz), and features an integrated soft-start capacitor that gradually increases duty cycle to 50% over 2000 cycles to limit in-rush current during start-up and maintains equal pulse widths for the high- and low-side Mosfets in the full bridge throughout the start-up sequence.

The reference design includes the IRDC2086-330W fully-assembled printed circuit board, and a CD-ROM containing a User's Guide, data sheets, PCB files and application notes. In addition, IR's on-line design tool, myPOWER, can be used to customise Mosfet selection to suit one's application.

Further reading:

Next-gen power meter
Electrocomp Express Power Electronics / Power Management
The VT-PWR-LV is a next-gen Vista Touch power meter from Trumeter for single, split, and three-phase systems.

Read more...

---

Advanced PMIC for high-performance AI applications
ASIC Design Services Power Electronics / Power Management
Microchip Technology has announced the MCP16701, a Power Management Integrated Circuit (PMIC) designed to meet the needs of high-performance MPU and FPGA designers.

Read more...

---

New SiC power MOSFET
Future Electronics Power Electronics / Power Management
STMicroelectronics’ SCT012H90G3AG is a robust, automotive-grade SiC MOSFET, engineered for demanding power electronics, featuring a 900?V drain-source voltage and exceptionally low on-resistance of 12?mO at 60?A.

Read more...

---

Fundamental motor control design challenges and solutions
Power Electronics / Power Management
Mouser Electronics has announced a new eBook in collaboration with Qorvo, featuring industry experts providing key insights into methods, power efficiency and integration solutions available for motor control applications.

Read more...

---

Power management IC for battery products
Power Electronics / Power Management
The nPM1304 PMIC complements Nordic’s nPM1300 PMIC with a highly integrated, ultra-low power solution and precision fuel gauging for small size battery applications.

Read more...

---

Powering Innovation eBook: Changing what’s possible
Power Electronics / Power Management
This exclusive read, entitled ‘Changing what’s Possible,’ delves into how power dense Vicor modules enable many world-changing innovations across various sectors.

Read more...

---

16-channel multicell battery monitor
Altron Arrow Power Electronics / Power Management
The ADBMS6830B is a multicell battery stack monitor that measures up to 16 series-connected battery cells with a lifetime total measurement error of less than 2 mV.

Read more...

---

Reliable redundancy with the Mibbo M3DN Series
Conical Technologies Power Electronics / Power Management
Designed for use with two parallel-connected power supplies, the M3DN Series allows for true redundancy, making it ideal for mission-critical applications.

Read more...

---

Automotive power-over-coax inductor
RS South Africa Power Electronics / Power Management
TDK has launched the ADL8030VA, a high-performance inductor designed specifically for power-over-coaxial applications.

Read more...

---

Rugged PSU for challenging conditions
Conical Technologies Power Electronics / Power Management
Built for rugged reliability, the Mibbo MFC Series delivers stable, efficient power in environments where moisture, dust, and temperature extremes are everyday challenges.

Read more...

---