TI Introduces Wide-input Power Solutions with High-Voltage Protection
Texas Instruments Inc. (TI) expanded its industry-leading power management portfolio with two new step-down regulators with wide input voltages and high-voltage protection. The new 100V LDO and 60V dc-dc controller can withstand high-voltage transients, while maintaining high efficiency – providing peace of mind to designers of low- to mid-current, high-voltage telecom and industrial designs, such as motor control, HVAC relay, smart meters and automotive after-market applications.
The TPS7A4001 50mA LDO has the industry’s widest input voltage tolerance with an input voltage 7 to 100V, and achieves an extremely fast settling time of less than 500ns for a 50V transient event. The device, which comes in a tiny 8-pin, thermally enhanced 3 x 5mm MSOP package, has a low quiescent current of 25µA and ensures output accuracy in a noisy environment.
The TPS40170 synchronous step-down dc-dc controller offers a high degree of performance, efficiency and reliability, including voltage-mode control with input voltage feed-forward compensation, while supporting input voltages from 4.5 to 60V and output currents up to 12A. The controller protects against voltage spikes up to 62V, offers a fast FET on-time of 75ns and shutdown current of 1.0µA. The TPS40170’s unique bi-directional synchronization feature eliminates system beat and EMI noise and reduces input capacitance by up to 50 percent, saving board space. The device comes in a 3.5 x 4.5mm QFN.
In addition to the TPS40170 controller, TI provides a range of SWIFT monolithic switchers with integrated FETs to simplify design in lower current 60V applications. The 2.5A TPS54260, 1.5A TPS54160 and 500mA TPS54060 converters provide up to 95% efficiency to 12-, 24- and 48V industrial and commercial designs and GSM/GPRS modules used in smart meters, fleet management and security systems. All three SWIFT converters are pin-compatible for design flexibility.
TI’s power management converters and controllers efficiently manage the system power requirements in industrial applications that use a variety of embedded processors including TI’s new MSP430AFE2xx series of metrology analog-front end (AFE) ultra-low-power 16-bit MCUs, C2000™ real-time control MCUs, Stellaris® ARM® Cortex™-M MCUs, C6-Integra™ DSP+ARM processors, C6000™ high-performance DSPs and C5000™ ultra-low power DSPs.
The TPS7A4001 is available in volume now from TI in an 8-pin, 3 x 5mm MSOP PowerPad™ package. Suggested resale pricing is $1.90 in 1,000-unit quantities. The TPS40170 controller comes in a 3.5 x 4.5mm QFN with a suggested resale price of $2.40 in 1,000-unit quantities.
