Monolithic 2.5-MHz step-down DC/DC converter withstands 80-V transients
April 20, 2012 // Paul Buckley
Linear Technology Corporation has released a 60 V IN step-down switching regulator that can deliver dual 1 A outputs. The LT3988 operates within a V IN range of 4 V to 60 V, with overvoltage lockout protection against transients of 80 V.
The device is ideal for load dump and cold-crank conditions commonly found in automotive applications.
The LT3988 can be driven by two separate input rails or by a single input, maximizing design flexibility. Its internal 1.3 A switches deliver up to 1 A of continuous output current. Switching frequency is user-programmable from 250 kHz to 2.5 MHz, enabling the designer to maximize efficiency, while avoiding critical noise-sensitive frequency bands. The combination of its thermally enhanced MSOP-16E package and high switching frequency, which keeps the external inductor and capacitors small, provides a compact, thermally efficient footprint.
The LT3988 utilizes dual, high efficiency 1.3 A switches, with the necessary boost diodes, oscillator, control and logic circuitry integrated into a single chip. Its catch diode current sense (DA) pins protect the circuit during input voltage transients even at high switching frequencies while adding robust short-circuit protection. Anti-phase switching minimizes both input and output ripple. Special design techniques used in the LT3988 enable high efficiency over a wide input voltage range, and the device’s current mode topology enables fast transient response and excellent loop stability. Other features include external synchronization (from 250 kHz to 2.5 MHz), internal loop compensation, thermal shutdown and tracking capability.
More information about the LT3988 at www.linear.com/product/LT3988
Bosch brings electronic fuel system, connectivity to Asian motorbikes
October 31, 2014
With an electronically controlled fuel injection system for motorcycles, supplier Bosch is offering a more efficient alternative ...
NXP extends NFC ecosystem to the car
Japan's MegaChips to buy MEMS maker SiTime
Freescale CEO: 'IoT isn't just buzz'
3D prints world's best inverter
Research project significantly improves electronics reliability
October 29, 2014
The RESCAR 2.0 research project helps to improve reliability and resilience of electronic systems in vehicles, in particular ...
Netscout Acquires Communications Businesses From Danaher
"Quality happens at the system level, not just at the product level"
Some memories never die
- Wireless Power User Guide
- Secure is the New Smart
- 5 Best Practices for Designing Flexible Test Stations
- Intelligent PLCs Expand the Internet of Things
InterviewFreescale CEO: 'IoT isn't just buzz'
Coming after the solid third quarter results that produced higher operating margins and improving cash flow, Freescale Semiconductor's CEO Gregg Lowe had every reason to be chipper and lively when EE Times ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Oscium is giving away three of its iMSO-204L dual analogue iOS oscilloscopes, worth USD400 each. Designed with native Lightning compatibility, the iMSO-204L transforms the iPad, iPhone, and iPod touch into an ultra-portable, two-channel oscilloscope.
Since Apple changed its connector, Oscium has been working to bring native compatibility to its customers. The third generation...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.