Austrian microelectronics launches power management chip with innovative remote feedback line AS3721

China, May 28, 2013--leading high-performance analog ICS and sensor providers Austrian microelectronics (six stock code: AMS) announced today the launch of a power management chip (PMIC) AS3721 with innovative remote feedback lines, Helps reduce the heat pressure on smartphones and tablet applications.

AS3721 with a high degree of integration with the introduction of synchronous Power Module AS3729 with the use of the formation of a complete power management system. The system can react quickly to instantaneous changes in load and make the performance of the processor more reliable. At the same time provides a higher power conversion efficiency and more flexible circuit board layout.

AS3721 and AS3729 are specifically optimized for applications that match the NVIDIA (NVIDIA) Tegra processor.

The AS3721 builds a compact remote feedback path between the DC controller integrated in the processor and IC. Thanks to the innovative design of the Austrian microelectronics company, which has filed a patent application, the AS3721 feedback interface requires only two lines (one control signal, one temperature signal). Other power management chips typically require four to five lines.

Since pmic and power modules require only a very small amount of wiring, the pmic and power modules can be placed far apart in a very limited space such as smartphones, tablets and laptops. This greatly reduces the thermal area and thermal strength around the processor, compared with the traditional approach of the processor and pmic, which must be placed together.

AS3721 dual-line Interface Feedback operation is also very rapid. The processor voltage can be maintained within secure operating range even when the current is provided with extremely fast variations. 40uF output capacitor, 1.0V output voltage, when the current from 0.5A to 5A, trigger mode system instantaneous pressure drop is only 32mV (median).

The Power module of 5 A AS3729 is a good supplement to AS3721 pmic. AS3729 has built N-type and P-type MOS tubes in two phases, which can be individually controlled and support output currents of 2.5A per phase. The AS3721 can be connected to 4 AS3729 build 8-phase configurations, supporting up to 20A output current. Equipment manufacturers can choose between single-phase or multiphase to optimize design or cost savings, reduce the number of parts (using fewer, larger inductors) or reduce the board area (using more small inductors).

The main AS3721 pmic include: Four DC step-down regulators that can provide 4 A, 2 A and 1.5A currents, three DC-ac step-down controllers with a rated current of 5 A, 10A and 20A, 12 digital linear regulators, a real-time clock, a monitoring circuit, and a universal input and output interface ; a general-purpose analog-to-digital converter; and a one-time programmable start time sequence. The AS3721 uses a 8mm x 8mm BGA package with only 0.5mm foot spacing.

The AS3729 Power module adopts chip-level encapsulation (CSP), 1.6mm x 1.6mm, and the foot spacing is 0.4mm.

"Austrian microelectronics has been working to solve the most difficult problems in power and simulation, and the design products offered by Nvidia are yet another example of success," said Kambiz Dawoodi, vice president of Austrian microelectronics and general manager of power and wireless services. Our patented feedback interface technology has greatly improved the layout of the circuit boards for smartphones and tablets, and will help device manufacturers significantly reduce the heat dissipation of processors and related components. ”

Supply

AS3721 pmic and AS3729 power modules are available for samples.

Technical support

For more information on Austrian microelectronics AS3721 and AS3729, or to request samples, please visit www.ams.com/Power-Management/AS3721 and www.ams.com/Power-Management/AS3729.

About Austrian Microelectronics Company

The Austrian microelectronics company designs and manufactures high-performance analog semiconductors to provide customers with innovative solutions to help solve the most challenging problems. Austrian microelectronics products are mainly for the high precision, wide dynamic range, high sensitivity, ultra-low power demand applications. Austrian microelectronics provides products including sensors, sensor interfaces, power management ICS and wireless ICS for customers in the consumer, industrial, medical, mobile and automotive markets.

Austrian Microelectronics company headquartered in Austria, the global staff of more than 1,300 people, for more than 7,800 customers around the world to provide services. After the acquisition of optical sensor company Taos in 2011, AMS became the new name for the Austrian microelectronics. Austrian microelectronics listed on the Swiss Stock Exchange (stock code-Swiss Stock Exchange: AMS). For more information, visit www.ams.com.