IR2153(D)(S) & (PbF)NOTE:For new designs, we recommend IR’s new product IRS2153DFunctional Block Diagram for IR2153(S) RT VB R Q HV + LEVEL PULSE R HO - SHIFT FILTER S R R Q DEAD PULSE VS TIME GEN + S Q - V R/2 CC 15.6V + C - T R/2 LOGIC DEAD DELAY LO TIME UV COM DETECT Functional Block Diagram for IR2153D RT VB R Q HV + LEVEL PULSE R HO - SHIFT FILTER S R R Q DEAD PULSE VS TIME GEN + D1 S Q - V R/2 CC 15.6V + C - T R/2 LOGIC DEAD DELAY LO TIME UV COM DETECT NOTE: The D1 is a separate die. 6 www.irf.com