Intersil ZL1505
The ZL1505 is an integrated high-speed, high-current N-channel MOSFET driver for synchronous step-down DC-DC conversion applications. When used with Zilker Labs Digital-DC™ PWM controllers, the ZL1505 enables dynamically adaptive dead-time control that optimizes efficiency under all operating conditions. Operating from a 4.5V to 7.5V input, the ZL1505 combines a 5A, 0.5W low-side driver and a 3A, 0.8W high-side driver to support high step-down buck applications.FEATURES
● High-speed, high-current drivers for synchronous N-channel MOSFETs● Adaptive dead-time control optimizes efficiency when used with Digital-DC controllers
● Integrated 30V bootstrap Schottky diode
● Capable of driving 40A per phase
● Supports switching frequency up to 1.4MHz - >4A source, >5A sink low-side driver - >3A source/sink high-side driver - <10ns rise/fall times, low propagation delay
● Adjustable gate drive strength optimizes efficiency for different VIN, VOUT, IOUT, FSW and MOSFET combinations
● Internal non-overlap watchdog prevents shoot-through currents
APPLICATIONS
*(see page 12)● High efficiency, high-current DC/DC buck converters with digital control and PMBus™
● Multi-phase digital DC/DC converters with phase adding/dropping
● Power train modules
● Synchronous rectification for secondary side isolated power converters Related Literature*(see page 12)
● FN6846 ZL2004 Data Sheet HSEL VDD PWMH Level shift PWML Shootthrough Protection BST GH SW VDD GL ZL1505 GND LSEL FIGURE 1.