regulator has been synchronized to the LM2596 (150kHz) buck Simple Switcher to avoid cross coupling. The LM2586 (boost), LM2588 (boost), LM2671 (buck), and LM2672 (buck) Simple Switchers can all be synchronized. V IN 9V IN L2 CIN2 VOUT2 +15V LM2588 COUT2 FB RC R3 C C 215 FREQ SYNC ADJ R1 R2 IN 1.69k 7.5k CIN1