TLD5190 H-Bridge DC/DC Controller Infineon LITIX Power Package PG-VQFN-48-31 PG-TQFP-48-9 Marking TLD5190QV TLD5190QU Sales Name TLD5190QV TLD5190QU 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 Maximum Efficiency in every condition (up to 96%) Constant Current (LED) and Constant Voltage Regulation EMC optimized device: Features an auto Spread Spectrum Open Load, Overvoltages, Shorted LED fault and Overtemperature Diagnostic Outputs 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 CIN2 V R IN IIN Alternative external VREG supply C VIN IVCC ext IVCC CIN1 IVCC D D2 1 COUT2 C OUT3 BST1 R Rfilter FB IIN2 BST2 CBST1 CBST2 COUT1 C filter M M IIN1 1 4 HSGD1 EN/INUVLO SWN1 LOUT INOVLO M 2 M CCOMP 3 LSGD1 R COMP COMP C SOFT START SWCS SOFT START RFREQ FREQ High SGND SYNC of other DCDC CLKOUT Power PGND1 C SYNC signal R SYNC SYNC PGND2 LED Load LSGD2 Spread Spectrum ON/OFF Spread spectrum SWN2 HSGD2 Digital dimminig R PWMI IVCC ext PWMI VFB VREF CREF R SET FBH Analog dimminig SET R SENSE IINMON Advanced monitoring FBL R IOUTMON SENSE EF1 Errorflag monitoring EF2 VSS AGND Figure 1 Application Drawing - TLD5190 as current regulator Datasheet 1 Rev. 1.1 www.infineon.com 2018-02-08 REF2 R EF1 R3 R2 R1 R SWCS RVFBL RVFBH TLD5190 H-Bridge DC/DC Controller Overview Description The TLD5190 is a synchronous MOSFET H-Bridge DC/DC controller with built in protection features. This concept is beneficial for driving high power LEDs with maximum system efficiency and minimum number of external components. The TLD5190 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 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 TLD5190 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 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 Diagnostic information via Error Flags Open load detection in ON-state Device Overtemperature shutdown Advanced diagnostic functions provide I and I information LED IN 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