April 7, 2003 - Redefining power management for communications systems, National Semiconductor Corporation (NYSE: NSM) today launched two new switching regulators tailored for high-voltage power supply designs for communications, industrial and automotive applications. By combining advanced high-voltage processes, chip-scale packaging and proprietary circuitry, National Semiconductor offers the industry's first fully integrated switching regulator ICs that operate from 10 volts to more than 100 volts.
"National's new high-voltage power products address the evolving and demanding power conversion requirements of next-generation systems for our major customers," said Paul Greenland, marketing director for National Semiconductor's Power Management Group. "The LM5000 family provides engineers with all-in-one solutions for reliable, high performance and cost-effective power system design. In light of the positive feedback we've already received from customers, we are confident the LM5000 family will become a preferred power solution for high-voltage systems."
According to the Darnell Group, a leading power management market research firm, the global communications power market is expected to grow from $4.4 billion in 2003 to $5.8 billion in 2008, a compound annual growth rate (CAGR) of 5.5 percent. In units, the market is expected to experience a CAGR of 11.2 percent during the same period.
Currently, communications application-specific integrated circuits (ASICs) deploy deep sub-micron technologies that require a sub 2 V power source at high current. At the same time, power demand is increasing along with the number of the ports per board and speed of communication. National Semiconductor simplifies power conversion from the high-voltage bus to the low voltages required in communications and automotive equipment.
"Coilcraft is proud to collaborate with National Semiconductor by providing magnetics to support National's innovative LM5000 and LM5030 high-voltage power solutions for use in high density DC-DC controllers," said Paul Liebman, vice president of marketing at Coilcraft Inc. "The two companies look forward to offering quality products and services to this rapidly growing segment of the power management market."
As an industry leader in power management, National Semiconductor's high-voltage power IC portfolio also includes the LM5041/LM5100 100 V cascaded controller-driver chipset with programming timing. National has developed power management technology for a wide range of applications including communication infrastructure, wireless handsets and other portable devices, servers and PCs.
LM5000 - Tiny, Switching Regulator Integrated with an 80 V @ 2 A FET
National's LM5000 is a fully integrated, current-mode, pulse-width modulation (PWM) DC-DC regulator that operates with a wide range of input voltage between 3.1 V and 40 V. A built-in 80 V power DMOS transistor is rated up to 2 A peak with a channel resistance of 200 milliohms. The versatile LM5000 operates at user-selectable frequencies up to 1.25 MHz. The LM5000 offers high-density, high-efficiency power conversion solutions in telecommunications, automotive, networking, industrial, and battery-powered applications.
The LM5000 features:
- Integrated 200 milliohms, 80 V DMOS transistor
- Integrated 3.1 V to 40 V start-up bias regulator
- Integrated over-temperature shutdown
- User-selectable operating frequency: 300 kHz, 600 kHz, 700 kHz or 1.25 MHz
- Low power shutdown mode
- Integrated soft-start circuitry
LM5030 - 100 V Push-Pull PWM Controller
The world's first 100V, high-frequency current-mode dc-dc controller, the LM5030 is a PWM controller with all the features to implement state-of-the-art Push-Pull and Bridge topologies. Ideal for powering communications equipment such as central office switches, DSL access multiplexers, high-availability systems and 48 V distributed power systems, the LM5030 integrates an internal 100 V start-up regulator in a thermally enhanced chip-scale package.
The LM5030 combines the following unique features on a single chip:
- Programmable oscillator with external synchronization
- 15 V to 100 V, start-up bias regulator
- Two high-speed, 2 A peak power MOSFET drivers
- Current limit propagation delay of less than 100 ns
- Dual mode current sense limiting
- Thermal shutdown
- User-programmable soft-start
- 10-pin surface mountable LLP-10 package (4 mm X 4 mm)
- Internal slope compensation
- High Gain-Bandwidth error amplifier
National's LM5000 family is designed using the company's newest high-voltage (100 V) Analog Bipolar-CMOS-DMOS process (ABCD150-HV), which enables integration of logic circuitry, regulation functions, precision analog circuits, drivers and power switches on a single die. This family also makes good use of National's advanced packaging initiative to produce the world's smallest 100 V power devices in a thermally enhanced, surface mount, leadless leadframe package (LLP).
Availability, Pricing and Packaging
The LM5000 fully integrated high-voltage switching regulator in an TSSOP-16 or LLP-14 package is priced at $2.00 each in 1,000 quantities. The LM5030 high-voltage PWM controller in an MSOP-10 or LLP-10 package is priced at $1.85 each in 1,000 quantities. The LM5030 and LM5000 are available for sampling now with volume production in June and July, respectively.
About National Semiconductor
National Semiconductor is the premier analog company driving the information age. Combining real-world analog and state-of-the-art digital technology, the company is focused on analog-based semiconductor products, which include stand-alone devices and subsystems in the areas of power management, imaging, display drivers, audio, amplifiers and data conversion. The company targets key markets such as wireless, displays, information infrastructure and a broad range of portable applications. With headquarters in Santa Clara, California, National reported sales of $1.5 billion for its most recent fiscal year. Additional company and product information is available on the World Wide Web at www.national.com.
