Infineon – TLD5190QU – synchronous MOSFET H-Bridge DC/DC controller with built in protection features
The TLD5190QU is a synchronous MOSFET H-Bridge DC/DC controller with built in protection features. This concept of a synchronous and seamless buck-boost regulation provides a very efficient solution for circuits where the output (load) voltage is on the same level as the input voltage, e.g. in short chains with 2 to 3 high power LEDs or laser diodes connected to a 12 V electrical system.
Thanks to the flexibility to be used in current and in voltage mode it is also a perfect device for powering non LED applications like USB and mobile wireless charger or as multipurpose pre-regulation like for infotainment. As it comes without SPI it is also ideal for all application where a basic feature set is sufficient or where a Microcontroller is not used.
Features
- MOSFET H-Bridge with Single Inductor DC/DC Controller for high power BUCK-BOOST LED control
- Constant Current and Constant Voltage Regulation
- Wide VIN Range (IC 4.5 V to 40 V, Power 4.5 V to 55 V)
- Wide LED forward voltage Range (2V up to 55V)
- Switching Frequency Range from 200 kHz to 700 kHz
- LED current accuracy +/- 3% at TJ = 25°C and 4% over the whole automotive temperature range
- 16-bit SPI for diagnostics and control, providing daisy chain capability
- Maximum Efficiency in every condition (up to 96%)
- Drives multiple loads with a single IC thanks to the Fast Output Discharge operation
- Limp Home Function (Fail Safe Mode)
- EMC optimized device: Auto and programmable Spread Spectrum
- LED and Input current sense with dedicated monitor Outputs
- Adjustable soft start feature to limit the current peak and the voltage overshoot at start-up
- Smart power protection features for device and load (open load, short of Load, Overtemperature)
- Enhanced Dimming features: Analog and PWM dimming
- Available in a small thermally enhanced PG-TQFP-48-9 package
Competitive Advantage
High Power DC/DC H-Bridge controller with SPI and full adjustability, built in monitoring and protection features, suitable for loads operated on input voltage level and for currents >3A or where >90% efficiency is required. With Auto Spread Spectrum and SPI communication.
Benefits
- 1ch DC/DC for seamless Buck-Boost & High power applications
- Good EMC performance
- Built in monitoring and protection functions
- Constant Current and Constant Voltage Regulation
- PWM and Analog dimming
Qualification
Automotive AEC qualified
Target applications
Especially designed for driving high power LEDs in automotive applications
Ideal for driving (LED) loads on supply/battery voltage level
Application examples:
Automotive Exterior Lighting, where high efficiency is required or where board space is limited, like high current Low Beam, High Beam or combined Low- and High beams
Non LED applications like USB, mobile wireless charger and multipurpose pre-regulation like for infotainment
Intern: ICPWM
