SipuSemi 駟諩半導體

The energy efficiency optimization of LED lighting and thermal management

linkpai — Fri, 05 Jul 2013 17:54:58 GMT

LED continued into the more applications and markets, speed non-8 or could have expected 10 years ago. While the LED is becoming increasingly popular, but there are some with the LED driver efficiency and heat-related thorny issues, requiring designers to pay close attention. Lighting with LED type and energy-efficient topology matching and drive good design, combined with efficient thermal management, can significantly reduce the total energy consumption and delay LED lamp life. This online broadcast one hour long, will look at the designer must know in advance what factors and what device or technology can be used to help make the right choice in the drive and thermal management programs to ensure design success.

What makes the material heat "(What Burns Me Up) English online seminar

linkpai — Fri, 05 Jul 2013 17:53:27 GMT

Misunderstanding and neglect of thermal error, will appear in all levels; from the semiconductor package, thermocouple and infrared imaging, to cold poly variable heat and hot dense plasma focus reactor design, to high efficiency architecture, waveguide and electric car charging device, and to a perpetual motion machine and global warming, etc..

This may be a bit indulge in the wildest fantasy English speech, telling examples will be his thirty years of occupation career engaged in mechanical engineer and thermal personnel transfer and energy systems encountered. If the meaning of speech, and that is all over the world, especially in electronic industry, thermal education need to be better.

The video driver to manage energy saving

linkpai — Fri, 05 Jul 2013 17:52:20 GMT

Watch the English online seminar to understand and design the Blu ray player and set-top box to solve more detailed information and improve the efficiency of energy demand. Presentation discusses common video driver architecture and the recently updated American "Energy Star" normative effect on the video driver architecture. Patent video driver program to A Morimi semiconductor to meet these new specifications and solve the related design challenges.

A Morimi semiconductor IGBT scheme in the electromagnetic oven, uninterruptible power supply,

linkpai — Fri, 05 Jul 2013 17:48:32 GMT

This online seminar will introduce vertical IGBT products plan of A Morimi semiconductor. High performance applications switch IGBT is often used for very high efficiency. We hope that this study can increase the user understanding of IGBT, including the application system structure of IGBT, IGBT in the electromagnetic oven, uninterrupted power supply, to consider solar inverter, and the inverter welding machine used in the index. We will also in the performance of the system compared with A Morimi semiconductor IGBT and other manufacturers of IGBT, and the prospect about IGBT of the current technology and future technology.

This series is a sister product of our XCL205/XCL206/XCL207 series, XCL201/XCL202 series, and XCL208/XCL209 series. This series is an environment-friendly product that complies with the EU RoHS Directive and is Pb-free.

LED driving and dimming

linkpai — Fri, 05 Jul 2013 17:47:31 GMT

LED because of its efficiency and long service life, is continuing to speed faster than the application of lighting, LED driver is so technology, especially for the dimming of the LED drive technology. LED dimming, especially for display or lighting applications LED dimming, brought with matching LED and traditionally used for incandescent bulbs of TRIAC switch a series of special issues related to. Fortunately, the industry has already developed drive scheme to overcome LED and drive matching problem. Now focus on using the new devices, techniques and skills in dimming applications, to the highest possible efficiency drive in the mode of LED, and has the largest control. The English EDN webinar will talk about with the drive basic problems of dimming LED related, as well as the leading LED driver and component suppliers to help designers to overcome these problems, optimizing their design in power, control, cost, reliability and time to market.

Topics include:

The industry status and standards

Dimming problem still face (dimming range, color drift, flicker, resolution, accuracy, perception)

How to solve these problems effectively

Portable equipment and automotive LED lighting application contrast; serial and parallel contrast configuration; electromagnetic interference (EMI) / radio frequency interference (RFI); thermal stress

Components / drive selection (controller, voltage regulator, converter topology)

A novel technology,

LED lighting applications

linkpai — Fri, 05 Jul 2013 14:12:39 GMT

According to the power supply (portable battery, power, automotive power or off-line by AC or DC power supply) and LED configuration (series, parallel, series parallel combination) is different, you need a different solution application, needs constant current driver is different, such as linear, buck or boost, or buck boost flyback or.

GreenPoint ® - 1 W to 5 W LED drive

GreenPoint ® - 8 W away from the linear LED driver

Selection guide LED driver design

LED backlight driver, charge pump

LED backlight driver, inductance type

Automotive interior lighting

GreenPoint ® - offline type high power factor TRIAC dimmable LED driver

A: the launch of Sipu HiSAT-COT, 1.5A response technique using high speed transient unique

16V Step-down DC/DC Converter with Internal Driver Tr. XC9246 / XC9247 Series

linkpai — Fri, 05 Jul 2013 14:12:30 GMT

The XC9246/XC9247 series are 16V step-down DC/DC converters with an internal driver Tr. The output voltage can be set within the range 1.2V to 5.6V using the 1.0V (±1.5%) internal reference voltage and external resistors. The soft-start time is set internally to 1.5ms (TYP.) and this can be adjusted externally using a resistor and capacitor connected to the EN/SS pin.
The switching frequency is a high 1.2MHz, enabling the use of small external components. The bootstrap method is employed and the Hi side driver is N-ch to reduce chip area, making it possible to house the IC in a SOT-26W or small USP-6C package. Small peripheral components and a compact package also mean less mounting area is needed, contributing to improved efficiency/thermal performance. It can replace a 3-pin regulator.
PWM control (XC9246) or PWM/PFM auto switching control (XC9247) can be selected for the operation mode. The XC9246 series is PWM control, and the XC9247 series is PWM/PFM, which automatically switches from PWM to PFM during light loads and provides high efficiency, high load response, low voltage ripple, can be achieved over a wide range of load conditions.
Internal protective circuits include a current limiting circuit, thermal shutdown, and short-circuit protection circuit. An internal UVLO function that forcibly turns the driver Tr. off at the detection voltage level or lower is also provided. This series is an environment-friendly product that complies with the EU RoHS Directive and is Pb-free.

New SOP-8FD Package Added, 2A Synchronous Step-Down DC/DC Converters, XC9242/XC9243

linkpai — Fri, 05 Jul 2013 14:12:20 GMT

The XC9242/XC9243 series are synchronous step-down DC-DC converters capable of supporting output currents up to 2A. The internal 0.11Ω (TYP.) P-channel MOS driver transistor and a 0.12Ω (TYP.) N-channel MOS switch transistor enable the stable drive of output currents up to 2A together with high efficiency.
The operating voltage range is 2.7V to 6.0V. The output voltage can be freely set from 0.9V using the 0.8V ±2.0% internal reference voltage and an external resistor ladder. A switching frequency of 1.2MHz (±15%) or 2.4MHz (±15%) can be selected as appropriate for the application. PWM control (XC9242) and PWM/PFM automatic switching control (XC9243) can be selected for the control method, and low output ripple and high efficiency are achieved across a full range of load currents. The new series can be used with ceramic capacitors.
The XC9242/XC9243 series has an internal soft-start function that quickly starts the output power supply in 1ms (TYP.). The current limiting function is set to 4.0A (TYP.) and is ideal for large-current applications. A CL high-speed discharge function and UVLO function (forcibly turns off the internal driver transistor at an input voltage of 2.4V TYP. or less) are also built in. The XC9242/XC9243 is available in a small USP-10B package and SOP-8FD, which is added as new package and can be selected to match the application. This series is an environment-friendly product that complies with the EU RoHS Directive and is Pb-free.

Step-up Synchronous PFM DC/DC Converter XC9140 Series

linkpai — Fri, 05 Jul 2013 14:12:00 GMT

The XC9140 series are step-up synchronous DC/DC converters that support ceramic capacitors and have an internal 0.6Ω (TYP.) N-ch driver transistor and an internal 0.65Ω (TYP.) P-ch synchronous switch transistor. PFM control enables a low quiescent current, making these products ideal for portable devices that require high efficiency.

When the output voltage is 3.3V and the load current is 1mA, startup from an input voltage of V_IN=0.9V is possible which means that the XC9140 can be used in applications that start from a single alkaline or nickel-metal hydride battery. The output voltage can be set from 1.8V to 5.0V (±2.0%) in steps of 0.1V.

The XC9140 features a load disconnect function to break continuity between the input and output at shutdown (XC9140A), and also a bypass mode function to maintain continuity between the input and output (XC9140C).

A version with a UVLO (Under Voltage Lock-Out) function will also be available (currently under development) which enables the prevention of battery leakage by stopping the IC's operation when the input voltage is low. The standard product will have a UVLO release voltage of 2.15V (±3.0%) and a custom version with a UVLO release voltage selectable from between 1.65V to 2.2V, in steps of 0.1V, will also be made available. These environmentally friendly products comply with the EU RoHS Directive and are Pb free.

Transient Voltage Suppressor (TVS) Protection Diodes, XBP Series: 10 New Products

linkpai — Fri, 05 Jul 2013 14:11:51 GMT

Sipu is pleased to announce the addition of 10 new TVS protection diodes to its existing transient voltage suppressor line up. With 5 of the 10 new TVS diodes suitable for use with high speed signals and the other 5 suited to power line applications, we have expanded our product portfolio.
   These TVS can be placed close to the external interface and are perfect for safeguarding systems against ESD and other voltage-induced transient pulses.
   The XBP1002, XBP1004, XBP1006, XBP1008 and XBP1009 all have small terminal capacitance and can support high speed signal lines so are all suitable for USB2.0, USB3.0, HDMI & LVDS line protection.
   The XBP1010, XBP1011, XBP1013 are 5V parts, the XBP1012 is 12V and the XBP1007 is 24V making these new TVS Diodes suitable for use for protection against transients on AV product signal lines and also power line protection.
   These new TVS Diodes are environmentally friendly products that comply with the EU RoHS directive and are Pb free. At Torex, we will continue to develop our TVS product line up to meet market needs.