ISL78227 Datasheet | Renesas

feature programmable adaptive dead time control offering flexibility in power stage design. The ISL78227 offers a 90° output clock and supports 1-, 2-, and 4-phases. The ISL78227 offers a highly robust solution for the most demanding environments. Its unique soft-start control prevents large negative current even in extreme cases, such as a restart under high output pre-bias on high volume capacitances. It also offers two levels of cycle-by-cycle overcurrent protection, average current limiting, input OVP, output UVP/OVP, and internal OTP. In the event of a fault, the fault protection response can be selected to be latch-off or hiccup recovery. Also integrated are several functions that ease system design. A unique tracking input controls the output voltage, allowing it to track either a digital duty cycle (PWM) signal or an analog reference. The ISL78227 provides input average current limiting so the system can deliver transient bursts of high load current while limiting the average current to avoid overheating. Features - Input/output voltage range: 5V to 55V, withstands 60V transients - Supports synchronous or standard boost topology - Peak current mode control with adjustable slope pensation - Secondary average current control loop - Integrated 5V 2A sourcing/3A sinking N-channel MOSFET drivers - Switching frequency: 50k Hz to 1.1MHz per phase - External synchronization - Programmable minimum duty cycle - Programmable adaptive dead time control - Optional diode emulation and phase dropping - PWM and analog track function - Forced PWM operation with negative current limiting and protection - prehensive fault protections - Selectable hiccup or latch-off fault response - AEC-Q100 qualified, Grade 1: -40°C to +125°C - 5mmx5mm 32 Ld Wettable Flank QFN (WFQFN) package Applications - Automotive power systems (12V to 24V, 12V to 48V, etc.) - Trunk audio amplifiers - Start-stop systems - Automotive boost applications - Industrial and telemunication power...