STEVAL-ILL072V1

STEVAL-ILL072V1 Single channel, 1 A automotive LED driver with boost controller for interior/exterior lights based on the ALED6001 Data brief Description The purpose of this evaluation board is to provide an application example of a single-channel, highcurrent LED driver using the ALED6001 chip operating with a boost topology. The brightness of the LED string connected to its output can be controlled through a PWM signal (0% - 100% dimming) or a control voltage (10:1 analog dimming). Open LED, feedback disconnection & LED overcurrent fault conditions are detected and managed. The evaluation board has been designed to provide an example of a compact solution for all automotive applications involving several LEDs arranged is a single string, and day-time running lights (DTRL) in particular. Features        Wide DC input voltage (8 V - 24 V) Single channel, 1000 mA constant-current output with PWM brightness control 500 kHz switching frequency Up to 10 high-brightness white LEDs (40 V OVP threshold) High efficiency (92% @ Vin = 12 V, Vout = 32 V, Iout = 1 A) All automotive grade components RoHS compliant October 2015 DocID027966 Rev 2 For further information contact your local STMicroelectronics sales office 1/4 www.st.com XFAULT FSW J3 CON1 J2 CON1 CON1 1 CON1 J7 CON1 J8 GND GND +VIN 1 1 1 1 FSW 0 R8 100 k R- LED FAULT D3 0 680 R C2 47 u 47 k R9 R 10 C 12 1u LD O 3 T P2 LDO3 XFAU LT C1 4u 7 XA L7030 -22 2 C3 4u 7 LD O 3 PW MI FSW XFAU LT LD O 3 SG N D C O MP AD IM O VFB C4 4u 7 G AT E R4 1R XA L1010 -15 3 L2 1 2 3 4 5 6 7 8 PW MI FSW XFAU LT LD O 3 SG N D C O MP AD IM O VFB U1 LX T P5 LX 0 100 p C 14 C O MP 0 C 13 3n 3 R 12 18 k T P3 CO M P VFBP VFBN VIN VD R G AT E PG N D PW MO C SN S 16 15 14 13 12 11 10 9 C SN S ALED 600 1 R5 0R 05 6 1k3 R6 Q1 ST D 20 N F06 L TPA D 17 L1 0 C 15 470 n T PA D VFBP VFBN VIN VD R G AT E PG N D PW MO C SN S 470 p C 17 R 16 8R 2 ST PS 5L60 SY D1 R 13 16 k 0 LD O 3 C 11 1u T P1 VDR R2 6k8 O VFB R1 220 k VO U T 68 k 1u C 16 SIL3 JP2 R 14 C 10 470 n C5 4u 7 0 SIL2 JP1 2 R 15 C7 4u 7 AD IM 50 k +VIN C6 4u 7 0 1 2 1 CON2 J11 CON1 J10 C8 68 u T P4 VOU T NTC ADIM PW MO C9 4u 7 R7 5R 6 SIL3 SW 1 4 VFBN VFBP 3 +VIN 3 1 DocID027966 Rev 2 1 0 G 1n C 18 R 17 10 R R3 0R 30 8 7 6 5 D4 D3 D2 D1 2/4 S3 S2 S1 2 +VIN 0 47 k R 11 Q2 ST S5N F60 L 60 R L4 60 R L3 0 BZT 52 C 4V7 D2 PW MI C 20 1n 1n C 19 1 1 1 1 CON1 J9 CON1 J6 CON1 J5 CON1 J4 PW MI GND LED_K LED_A 1 1 2 3 J1 Schematic diagram STEVAL-ILL072V1 Schematic diagram Figure 1: STEVAL-ILL072V1 circuit schematic GSPG11062015DI1550 STEVAL-ILL072V1 2 Revision history Revision history Table 1: Document revision history Date Version Changes 12-Jun-2015 1 Initial release. 12-Oct-2015 2 Updated title on the cover page. DocID027966 Rev 2 3/4 STEVAL-ILL072V1 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2015 STMicroelectronics – All rights reserved 4/4 DocID027966 Rev 2