原标题：Infineon TLD5541 - 2QV双路汽车照明解决方案

　　infineon公司的TLD5541-2QV是内置了保护特性和SPI接口的同步双路DC/DC控制器,提供模拟和数字(PWM)调光特性,开关频率在200kHz到700kHz,可以和外接时钟同步,LED正向电压2 V到55 V,IC电压4.5V-40V,电源电压4.5V-55V,SPI用来诊断和控制,各种条件下的最大效率高达96%,多种拓扑恒流(LED)和恒压调整.主要用在汽车中大功率LED驱动设计,汽车外照明如LED头灯,通用电流/电压控制DC/DC LED驱动器.本文介绍了TLD5541-2QV主要特性和产品指标,保护功能与诊断特性,框图和多种应用电路及相应材料清单,以及评估板TLD5541-2QV DEMO V1主要指标,电路图,材料清单和PCB元件布局图.

　　The TLD5541-2QV is a synchronous DUAL Channel DC/DC controller with built in protection features and SPIinterface. This concept is beneficial for driving high power LEDs with maximum system efficiency andminimum number of external components. The TLD5541-2QV offers both analog and digital (PWM)dimming.The switching frequency is adjustable in the range of 200 kHz to 700 kHz. It can be synchronized to an external clock source. A built in programable Spread Spectrum switching frequency modulation and theforced continuous current regulation mode improve the overall EMC behavior. Furthermore the current moderegulation scheme provides a stable regulation loop maintained by small external compensationcomponents. The adjustable soft start feature limits the current peak as well as voltage overshoot at start-up.The TLD5541-2QV is suitable for use in the harsh automotive environment.

　　TLD5541-2QV主要特性:

　　• Dual-Channel synchronous DC/DC Controller for HIGH POWER LED drivers

　　• Wide LED forward voltage Range (2 V up to 55 V)

　　• Wide VIN Range (IC 4.5 V to 40 V, Power 4.5 V to 55 V)

　　• Switching Frequency Range from 200 kHz to 700 kHz

　　• SPI for diagnostics and control

　　• Maximum Efficiency in every condition (up to 96%)

　　• Multitopology constant Current (LED) and Constant Voltage Regulation

　　• Drives Multiple Load with a single IC thanks to the Fast Output Discharge operation

　　• Limp Home Function (Fail Safe Mode)

　　• EMC optimized device: Features an auto Spread Spectrum

　　• LED current sense with dedicated monitor Output

　　• Advanced protection features for device and load

　　• Enhanced Dimming features: Analog and PWM dimming

　　• LED current accuracy +/- 3%

　　• Available in a small thermally enhanced PG-VQFN-48-31 package

　　• Automotive AEC Qualified

　　TLD5541-2QV产品指标:

　　TLD5541-2QV保护特性:

　　• Over load protection of external MOSFETs

　　• Shorted load, output overvoltage and overcurrent protection

　　• Input undervoltage protection

　　• Thermal shutdown of device with autorestart behavior

　　• Electrostatic discharge protection (ESD)

　　TLD5541-2QV诊断功能:

　　• Latched diagnostic information via SPI

　　• Open load detection in ON-state

　　• Device Overtemperature shutdown and Temperature Prewarning

　　• Smart monitoring and advanced functions provide ILED information

　　TLD5541-2QV降级模式功能:

　　• Limp Home activation via LHI pin

　　TLD5541-2QV应用:

　　• Especially designed for driving high power LEDs in automotive applications

　　• Automotive Exterior Lighting: full LED headlamp assemblies (Low Beam, High Beam, Matrix Beam, PixelLight)

　　• General purpose current/voltage controlled DC/DC LED driver

　　TLD5541-2QV一路降压,一路升压电流调整器材料清单:

　　TLD5541-2QV平行通路升压电流调整器材料清单:

　　TLD5541-2QV一路升压,一路降压电压调整器材料清单:

　　评估板TLD5541-2QV DEMO V1

　　Evaluation board for high power LED applications withthe TLD5541-2QV product.

　　The TLD5541-2 B2G DEMO is optimized to drive highpower LED applications.

　　The default configuration of the board is “Dual boostparallel voltage regulator” in multiphase topology thatallows to provide up to 80 W to the load with anefficiency above 94%.

　　The board can be configured to different topologieslike “Dual boost independent voltage regulators”,“Dual boost independent current regulators” and“Single boost independent voltage regulator plussingle boost independent current regulator”.

　　The board contains a 2x7 pin header to connect theTLD55xx MICROKIT (SP001802790) board. Thisinterface allows to control the TLD5541-2 B2G DEMOboard through a LabVIEW GUI installed on the PC.

　　图.评估板TLD5541-2QV DEMO V1外形图

　　评估板TLD5541-2QV DEMO V1主要指标:

　　评估板TLD5541-2QV DEMO V1材料清单:

　　详情请见:

20180608093100963.pdf

20180608093225173.pdf