Renesas Technology's Synchronous Rectification DC-DC Converter for Mobile Devices and Digital Consumer Products Responds Quickly to Load Transients.SAN JOSE San Jose, city, United States San Jose (sănəzā`, săn hōzā`), city (1990 pop. 782,248), seat of Santa Clara co., W central Calif.; founded 1777, inc. 1850. , Calif. -- New Output-Voltage Control Technique Provides the Fast Load Response Time (as Fast as 5 Microseconds) That's Essential for a Stable Output Power Supply Voltage Renesas Technology Renesas Technology Corporation (ルネサス テクノロジ| America, Inc. today announced the R2A20101 synchronous-rectifier type DC-DC DC-DC Direct Current to Direct Current (power conversion) converter, a fast-response power supply device for mobile phones, other digital consumer electronics products, and battery powered handheld devices. In a typical application, the power-converter IC is located right next to the load it is driving: typically a microcontroller, logic device, memory chips, etc. It performs step-down conversion of the voltage from a battery or other DC source to the stable lower power supply voltage that its load requires. By itself, the R2A20101 delivers up to 650mA of output current. However, an on-chip parallel-operation function allows even larger output currents. Suitable for low-voltage, large-current applications, the R2A20101 DC-DC converter produces an output voltage change in response to a load fluctuation (a wireless message transmission, etc.) in only five microseconds. This is at least 50-percent quicker than previous devices. To achieve this fast load transient response In electrical engineering and Mechanical Engineering, a transient response or natural response is the response of a system to a change from equilibrium. Specifically, transient response in Mechanical Engineering is the portion of the response that approaches zero after a , the device uses a new current-feedback method for output voltage control, helping to ensure reliable system operation. The DC-DC converter is simple to use. No external parts are required, just connections only to the VIN VIN Vulvar intraepithelial neoplasm, see there , GND GND Ground GND GIG (Global Information Grid) Network Defense GND System Ground GND Circuit Reference (Zero) Voltage Level GND St Georges/Grenada, Grenada - Pt Saline (Airport Code) , EAO EAO Environmental Assessment Office EAO Enseñanza Asistida Por Ordenador EAO Environmental Affairs Office EAO Environmental Assistance Office (EU) EAO Economic Assessment Office (NIST) EAO Economy Act Order (Error Amp. Out) and output pins. The device has a power supply voltage range of 2.5V to 5.5V and operates at PWM (Pulse Width Modulation) A modulation technique that generates variable-width pulses to represent the amplitude of an analog input signal. Like its fixed-width pulse density modulation (PDM) cousin, the output switching transistor is on more of the time for a switching frequencies as high as 2MHz (MegaHertZ) One million cycles per second. It is used to measure the transmission speed of electronic devices, including channels, buses and the computer's internal clock. A one-megahertz clock (1 MHz) means some number of bits (16, 32, 64, etc. . It achieves 92-percent power conversion efficiency with a 2.5V input and 1.8V output. The R2A20101 converter includes a voltage-tracking function and supports the execution of various kinds of sequence control. It is available in a small (4mm x 4mm x 0.8mm) QFN-24 low-thermal-resistance package, as well as an ultra-small (1.96mm x 1.26mm x 0.48mm) CSP-15 package. Pricing and Availability --------------- ----------------------- ------------------------------ Product Name Package Sample Price/Availability --------------- ----------------------- ------------------------------ R2A20101NP QFN-24 $1.5/Now --------------- ----------------------- ------------------------------ R2A20101BM CSP-15 $1.5/Now --------------- ----------------------- ------------------------------ Reader contact Readers can find additional product and contact information on the Renesas Technology Web site at www.renesas.com. About Renesas Technology Corp. Renesas Technology Corp. is one of the world's leading semiconductor system solutions providers for mobile, automotive and PC/AV (Audio Visual) markets and the world's No.1 supplier of microcontrollers. It is also a leading provider of LCD Driver ICs, Smart Card microcontrollers, RF-ICs, High Power Amplifiers, Mixed Signal ICs, System-on-Chip (SoC), System-in-Package (SiP) and more. Established in 2003 as a joint venture between Hitachi, Ltd. (TOKYO:6501)(NYSE NYSE See: New York Stock Exchange :HIT) and Mitsubishi Electric Mitsubishi Electric Corporation (三菱電機株式会社 Corporation (TOKYO:6503), Renesas Technology achieved consolidated revenue of 906 billion JPY JPY In currencies, this is the abbreviation for the Japanese Yen. Notes: The currency market, also known as the Foreign Exchange market, is the largest financial market in the world, with a daily average volume of over US $1 trillion. in FY2005 (end of March 2006). Renesas Technology is based in Tokyo, Japan and has a global network of manufacturing, design and sales operations in around 20 countries with about 26,200 employees worldwide. For further information, please visit http://www.renesas.com Note to Editors: A specification summary is included in this release. Product names, company names, or brands mentioned are the property of their respective owners. Specifications: Renesas Technology R2A20101 synchronous-rectifier type DC-DC converter ------------------------ --------------------------------------------- Item R2A20101 Specifications ------------------------ --------------------------------------------- Power supply voltage 2.5V to 5.5V ------------------------ --------------------------------------------- Output current 650mA, max. ------------------------ --------------------------------------------- Operating frequency 2MHz, max. ------------------------ --------------------------------------------- Packages QFN-24, CSP-15 ------------------------ --------------------------------------------- |
|
||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion