TI Introduces Three New Power Management Chips To Increase Voltage & Output Current In LED Designs
Texas Instruments Inc. (TI) introduced a high-power dc-dc boost LED driver (TPS61500) and high-voltage dc-dc boost converter (TPS61175), and expanded its step-down dc-dc converter series with TPS62110. These devices can support input voltages of up to 18V and feature smaller voltage references for improved LED circuit design. These energy-efficient devices are cross-functional and work across a variety of LED applications, including signage, ambient light, office light, general illumination, military, medical and sensors.
Key features of the TPS61500 include: 2.9 to 18V input voltage range; 3.0A current switch with integrated FET; four 3W LEDs from 5Vin; eight 3W LEDs from 12Vin; 200 kHz to 2.2 MHz switching frequency; 93% efficiency; wide input supply range for 12 or 15V industrial power rails; and up to 1A output current.
Key features of the TPS61175 include: wide input voltage range of 2.9 to 18V; 3.0A/40V integrated MOSFET; wide switching frequency of 200 kHz to 2.2 MHz; supports industrial applications with 12V, 15V bus systems or multi-cell applications; and builds small, internal compensation and enables flexible configurations for different application needs like boost, SEPIC and fly back converters.
Key features of the TPS62110 include: adjustable input voltage: 3.1 to 17V; adjustable output voltage: 1.2 to 15V; maximum output current 1.5A; maximum efficiency 95%; quiescent current of 20µA (2µA in shutdown); a switching frequency of 1 MHz; closes the gap between low-power dc-dc converters for portable applications and higher power DC/DC SWIFT™ converters for industrial applications; as a LED driver new lighting achieves up to 90% in energy savings and the life time of the light increases up to 8 times; can support fixed line rails like 12 or 15V, as well as a flexible number of battery cells; and a small QFN package and small exterior inductor (6.8 uH) result in small overall solution size.
The TPS61500, TPS61175 and TPS62110 are available now in production quantities. The devices are priced (1,000-unit quantities) as follows: TPS61500 – $1.60; TPS61175 – $1.80; and TPS62110 – $1.90.
