TLD55411QUXUMA1 Infineon

TLD5541-1 H-Bridge DC/DC Controller with SPI Interface Infineon LITIX Power Flex Package PG-VQFN-48-31 PG-TQFP-48-9 Marking TLD55411QV TLD55411QU Sales Name TLD5541-1QV TLD5541-1QU 1 Overview Features Single Inductor high power Buck-Boost controller 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%) 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 and Input current sense with dedicated monitor Outputs 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 or PG-TQFP-48-9 package Automotive AEC Qualified VIN R IIN C IVCC IN2 CIN1 IVCC ext C VIN IVCC Rfilter IIN2 IVCC D D 1 2 C filter IIN1 C C OUT2 OUT3 BST1 R SET FB LIMPHOME BST2 FAIL SAFE Circuit C C COUT1 BST1 BST2 V M M DD LHI 1 4 HSGD1 EN/INUVLO SWN1 L OUT I/O REN INOVLO C M COMP 2 M 3 LSGD1 R COMP COMP C SOFT START SWCS SOFT START FAIL SAFE Circuit Micro controller PWMI LH R FREQ FREQ SGND I/O RPWMI PWMI PGND1 R A/D SENSE IINMON PGND2 R A/D SENSE IOUTMON LSGD2 RSYNC SYNC I/O SWN2 VDD VDD HSGD2 VFB R CSN CSN FBH R SI SI SPI SPI RSO SO FBL R SCLK SCLK GND VSS AGND Figure 1 Application Drawing - TLD5541-1 as current regulator Datasheet 1 Rev. 1.1 www.infineon.com 2018-02-08 R PD R3 R2 R1 R R 4 5 R SWCS RVFBL R VFBH TLD5541-1 H-Bridge DC/DC Controller with SPI Interface Overview Description The TLD5541-1 is a synchronous MOSFET H-Bridge DC/DC controller with built in protection features and SPI interface. This concept is beneficial for driving high power LEDs with maximum system efficiency and minimum number of external components. The TLD5541-1 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 the forced continuous current regulation mode improve the overall EMC behavior. Furthermore the current mode regulation scheme provides a stable regulation loop maintained by small external compensation components. The adjustable soft start feature limits the current peak as well as voltage overshoot at start-up. The TLD5541-1 is suitable for use in the harsh automotive environment. Table1 Product Summary Power Stage input voltage range V 4.5 V 55 V POW Device Input supply voltage range V 4.5 V 40 V VIN Maximum output voltage (depending by the V 55 V as LED Driver Boost Mode OUT(max) application conditions) 50 V as LED Driver Buck Mode 50 V as Voltage regulator Switching Frequency range f 200 kHz... 700 kHz SW Typical NMOS driver on-state resistance at R 2.3 DS(ON PU) T = 25C (Gate Pull Up) j Typical NMOS driver on-state resistance at R 1.2 DS(ON PD) T = 25C (Gate Pull Down) j SPI clock frequency f 5MHz SCLK(MAX) Protective Functions Over load protection of external MOSFETs Shorted load, open load, output overvoltage protection Input overvoltage and undervoltage protection Thermal shutdown of device with autorestart behavior Electrostatic discharge protection (ESD) Diagnostic Functions Latched diagnostic information via SPI Open load detection in ON-state Device Overtemperature shutdown and Temperature Prewarning Smart monitoring and advanced functions provide I and I information LED IN Limp Home Function Limp Home activation via LHI pin Applications Especially designed for driving high power LEDs in automotive applications Automotive Exterior Lighting: full LED headlamp assemblies (Low Beam, High Beam, Matrix Beam, Pixel Light) General purpose current/voltage controlled DC/DC LED driver Datasheet 2 Rev. 1.1 2018-02-08