Power Solutions Feature High-voltage Protection

Texas Instruments Inc. (TI) expanded its power management portfolio with two new step-down regulators that feature wide input voltages and high-voltage protection. The 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 7V 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 3x5mm 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 4.5V to 60V and output currents up to 12A. The controller protects against voltage spikes up to 62 V, offers a fast FET on-time of 75ns and shutdown current of 1µA. 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 3.5x4.5mm 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 percent efficiency to 12V, 24V 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.

Texas Instruments