The TLD5190QV 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.
Summary of 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 (Device 4.5V to 40V, Power Stage 4.5V to 55V)
Wide LED forward voltage Range (2V up to 55V)
LED current accuracy+/-3% at Tj=25° and 4% over the whole automotive temperature range
Switching Frequency Range from 200 kHz to 700 kHz
Maximum Efficiency in every condition (up to 96%)
Flexible current sense (Highside or Lowside)
EMC optimized device: Features an auto Spread Spectrum concept to ensure best in class EMC performance
Open Load, Overvoltages, Shorted LED fault and Overtemperature Diagnostic Outputs
LED and Input current sense with dedicated monitor Outputs
Smart power protection features for device and load (open load, short of Load, Overtemperature)
Capability to supply Gate Drivers via external Voltage Regulator
Adjustable Soft Start
Enhanced Dimming features to adjust average LED current and PWM dimming
Available in a small thermally enhanced VQFN-48-31 package
Automotive AEC Qualified
Potential Applications
Especially designed for driving high power LEDs in automotive applications
Ideal for driving (LED) loads on supply/battery voltage level
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 Highbeams
Non LED applications like USB, mobile wireless charger and multipurpose pre-regulation like for infotainment
Applications
Adapters and chargers
ADAS & autonomous driving
Automotive body control module (BCM)
In-Cabin Wireless Charging
Solutions for inductive wireless charging above 50 W
The TLD5190QV 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.
Summary of 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 (Device 4.5V to 40V, Power Stage 4.5V to 55V)
- Wide LED forward voltage Range (2V up to 55V)
- LED current accuracy+/-3% at Tj=25° and 4% over the whole automotive temperature range
- Switching Frequency Range from 200 kHz to 700 kHz
- Maximum Efficiency in every condition (up to 96%)
- Flexible current sense (Highside or Lowside)
- EMC optimized device: Features an auto Spread Spectrum concept to ensure best in class EMC performance
- Open Load, Overvoltages, Shorted LED fault and Overtemperature Diagnostic Outputs
- LED and Input current sense with dedicated monitor Outputs
- Smart power protection features for device and load (open load, short of Load, Overtemperature)
- Capability to supply Gate Drivers via external Voltage Regulator
- Adjustable Soft Start
- Enhanced Dimming features to adjust average LED current and PWM dimming
- Available in a small thermally enhanced VQFN-48-31 package
- Automotive AEC Qualified
Potential Applications
- Especially designed for driving high power LEDs in automotive applications
- Ideal for driving (LED) loads on supply/battery voltage level
- 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 Highbeams
- Non LED applications like USB, mobile wireless charger and multipurpose pre-regulation like for infotainment
Applications
- Adapters and chargers
- ADAS & autonomous driving
- Automotive body control module (BCM)
- In-Cabin Wireless Charging
- Solutions for inductive wireless charging above 50 W
