LF21904NTR IXYS

LF21904N High-Side / Low-Side Gate Driver Features Description F loating high-side driver in bootstrap operation to The LF21904N is a high voltage, high speed gate driver 600V capable of driving N-channel MOSFETs and IGBTs in a half- bridge configuration. The high voltage technology enables D rives two N-channel MOSFETs or IGBTs in a half- the LF21904Ns high side to switch to 600V in a bootstrap bridge configuration operation under high dV/dt conditions. Output drivers capable of 4.5A/4.5A typ sink/source LF21904N logic inputs are compatible with standard Logic input (HIN and LIN) 3.3V capability TTL and CMOS levels (down to 3.3V) to interface easily Schmitt triggered logic inputs with internal with controlling devices. The driver outputs feature high pulldown pulse current buffers designed for minimum driver cross Under Voltage Lockout (UVLO) for high and conduction. low-side drivers LF21904N is offered in the 14-pin SOIC and operates over Extended temperature range: -40C to +125C the extended temperature range of -40C to +125C. Applications Motor Controls DC-DC Converters AC-DC Inverters Class D Power Amplifiers SOIC(N)-14 Typical Application Ordering Information Up to 600V Year Year Week Week Part Package Pack / Qty Mark YYWW LF21904N LF21904NTR SOIC(N)-14 T&R / 2500 LF21904N V CC VVCCCC VVBB Lot ID TO LOAD HINHIN HOHO HIN LLININ VV SS LIN VV LOLO SSSS COMCOM R4 DS-LF21904N-R0 1 1LF21904N High-Side / Low-Side Gate Driver 1 Specifications 1.1 Pin Diagrams O NC HIN 1 14 LIN 2 13 V B V 3 12 HO SS NC 4 11 V S COM 5 10 NC LO 6 NC 9 VCC 7 NC 8 Top View: SOIC(N)-14 LF21904N 1.2 Pin Descriptions Pin Pin Name Pin Type Description Logic input for high-side gate driver output, in 1 HIN Input phase with HO Logic input for low-side gate driver output, in 2 LIN Input phase with LO 3 V Power Logic Ground SS 5 COM Power Low-side and logic return 6 LO Output Low-side gate drive output 7 V Power Low-side and logic fixed supply CC 11 V Power High-side floating supply return S 12 HO Output High-side gate driver output 13 V Power High-side floating supply B 4, 8, 9 , 10, 14 NC No Connect Not connected internally DS-LF21904N-R0 1 2