Texas Instruments (TI) today announced a high-power, multi-topology DC/DC LED driver that supports adjustable switching frequency and current sensing thresholds, providing design flexibility for automotive headlamps, fog lights, and general lighting With low electromagnetic interference (EMI).
The TPS92690 is an N-channel MOSFET controller with low-side current sensing that supports boost or buck-boost (SEPIC, Cuk, flyback) LED driver topologies.
The TPS92690 DC/DC LED controller includes a variety of features that give designers a high degree of flexibility in optimizing their systems. For example, adjustable switching frequency (up to 2 MHz) and current sense thresholds help designers optimize LED driver electronics for small, high efficiency or a balance of both. Independent Pulse Width Modulation (PWM) and analog inputs are combined with a common dimming control method to adjust the LED current or perform a thermal return. The internal oscillator sets the converter switching frequency, but can also be overdriven by an external clock, which is designed to synchronize the switching frequency with other converters. Low-side current sensing not only enables the design of low EMI topologies such as Cuk converters, but also maintains a single-wire connection for LED loads.
The TPS92690 is part of TI's broad portfolio of LED drivers, including the LM3466, LM3409, and LM3421/3/4 DC/DC LED drivers.
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The TPS92690 is an N-channel MOSFET controller with low-side current sensing that supports boost or buck-boost (SEPIC, Cuk, flyback) LED driver topologies.
The TPS92690 DC/DC LED controller includes a variety of features that give designers a high degree of flexibility in optimizing their systems. For example, adjustable switching frequency (up to 2 MHz) and current sense thresholds help designers optimize LED driver electronics for small, high efficiency or a balance of both. Independent Pulse Width Modulation (PWM) and analog inputs are combined with a common dimming control method to adjust the LED current or perform a thermal return. The internal oscillator sets the converter switching frequency, but can also be overdriven by an external clock, which is designed to synchronize the switching frequency with other converters. Low-side current sensing not only enables the design of low EMI topologies such as Cuk converters, but also maintains a single-wire connection for LED loads.
The TPS92690 is part of TI's broad portfolio of LED drivers, including the LM3466, LM3409, and LM3421/3/4 DC/DC LED drivers.
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