This excessive efficiency LED driver from Texas Devices can independently modulate the LED present utilizing PWM dimming or analog methods.
Texas Devices has launched TPS92643-Q1 Buck Infrared LED Driver which has a large 5.5V to 36V working enter voltage vary and 40V tolerance that helps load dump for 400ms. An adaptive on-time common current-mode management based mostly on inductor valley present detection is carried out on the TPS92643-Q1. The adaptive on-time management supplies a near-constant switching frequency set between 100kHz and a couple of.2MHz. Closed-loop suggestions and inductor present sensing allows higher than ±4% accuracy over huge enter, output, and ambient temperature.
The high-performance LED driver can independently modulate the LED present utilizing PWM dimming or analog methods. By setting the IADJ voltage, a linear analog dimming vary with over 15:1 vary is obtained. The PWM dimming of the LED present is achieved by immediately modulating the UDIM enter pin with desired responsibility cycle. This characteristic will also be accomplished by setting the analog voltage at APWM to allow inner analog-to-PWM conversion. The inner PWM generator interprets the exterior analog voltage by evaluating it to an inner 1.4kHz ramp sign.
The Texas Devices TPS92643-Q1 contains a sophisticated diagnostic and fault safety that includes: cycle-by-cycle swap present restrict, bootstrap undervoltage, LED open, LED quick and thermal shutdown. The TPS92643-Q1 is offered in a 6.6mm × 5.1mm thermally-enhanced 16-pin HTSSOP bundle with a 0.65mm lead pitch.
Options
- Gadgets are AEC-Q100 certified for automotive purposes
– Grade 1 (–40°C to 125°C ambient working temperature)
– System HBM classification stage H1C
– System CDM classification stage C5 - 5.5V to 36V enter voltage vary
– Operation down to five.15V after start-up - The machine can have as much as 3A steady with 4% accuracy
- Adaptive on-time present management
– Low offset high-side present sense amplifier
– The machine is steady with any mixture of ceramic and aluminum capacitors - Programmable switching frequency from 100kHz to 2.2MHz
- Superior dimming operation
– 1000:1 precision PWM dimming
– 15:1 precision analog dimming
– 1.4kHz inner analog enter to PWM responsibility cycle translation - Cycle-by-cycle swap overcurrent safety
- Open-drain fault indicator output
– LED quick circuit, open circuit, and cable harness fault indication - Thermal shutdown safety
Functions
- Headlight
- Entrance fog gentle LED driver module
