Synchronous Step-Down MOSFET Drivers   

The ZL1505 is an integrated high-speed, high-current N-channel MOSFET driver for synchronous step-down DC-DC conversion applications. Optimized for use with Zilker Labs’ Digital-DC PWM controllers, the ZL1505 includes dual PWM inputs to enable dynamic dead-time control
for optimizing efficiency over a wide range of operating conditions. The ZL1505 combines a 5 A, 0.5 W low-side driver and a 3 A, 0.8 W high-side driver to support high stepdown
buck applications, and an integrated 30 V bootstrap Schottky diode to minimize external components.

The ZL1505 operates from a 4.5 V to 7.5 V input voltage and supports a wide -40 °C to 125 °C junction temperature range. The ZL1505 also implements a unique adjustable gate drive strength mechanism that allows the user to tailor the output current on both drivers to optimize performance for a wide range of input/output voltages, load currents,
switching frequencies and power MOSFETs.  

The ZL1505 enables high-current, high-efficiency
DC-DC converter designs when used with Zilker
Labs’ Digital-DC PWM controllers.   

 

For More Information:
ZL1505 Press Release (PDF)  
ZL1505 Product Brief (PDF)                ZL1505 Data Sheet (one page pdf) For a short form data sheet and access to Application Notes, please log on to MyZL.

Ordering Information:
To order ZL1505 samples or a ZL1505EVK (ZL2004EVK1, $249USD), please contact Zilker Labs' Sales Department at 512-382-8471 or via email.

Feature Summary 

•  High-speed, high-current drivers for
    synchronous N-channel MOSFETs
  - 4 A source, 5 A sink low-side driver
  - 3 A source/sink high-side driver
  - Supports ≥ 40 A power stages
  - Supports switching frequencies up
     to 1.4 MHz
  - < 10 ns rise/fall times
• Dual PWM inputs enable adaptive
  dead-time control when used with
  Digital-DC PWM controllers
• Adjustable gate drive strength
  enables optimization for different
  VIN / VOUT / IOUT / FSW  and MOSFET combinations
• Adjustable gate drive voltage from
  4.5 V to 7.5 V
• Internal non-overlap watchdog
  prevents shoot-through current
• Integrated 30 V bootstrap Schottky
  diode
• Wide -40 ºC to 125 ºC junction
  temperature range
• Small footprint, few components
• Exposed pad DFN-10 package
  (3 x 3 mm)
• RoHS-compliant, Pb-free