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ZL1505

Obsolete

Synchronous Step-Down MOSFET Drivers

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
Find Other Products in Multiphase DC/DC Switching Controllers
ZL1505 Functional Diagram
ZL1505 Functional Diagram

Description

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. A dual input PWM configuration enables this efficiency optimization while minimizing complexity within the driver. 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. A unique adjustable gate drive current scheme allows the user to adjust the drive current on both drivers to optimize performance for a wide rage of input/output voltages, load currents, power MOSFETs and switching frequencies up to 1. 4MHz. An integrated 30V bootstrap Schottky diode is used to charge the external bootstrap capacitor. An internal watchdog circuit prevents excessive shoot-through currents and protects the external MOSFET switches. The ZL1505 is specified over a wide -40°C to +125°C junction temperature range and is available in an exposed pad DFN-10 package.

Applications

  • 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
Part NumberStatusSamplesStockRoHSPackageLead Count (#)Carrier TypeMoisture Sensitivity Level (MSL)Pb (Lead) FreePb Free CategoryTemp. Range (°C)
ZL1505ALNFTObsoleteN/AOut of StockRoHS:EN
DFN10#Reel2YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ZL1505ALNFT1ObsoleteN/AOut of StockRoHS:EN
DFN10#Reel2YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ZL1505ALNFT6ObsoleteN/AOut of StockRoHS:EN
DFN10#Reel2YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +125°C
ZL1505ALNNT1ObsoleteN/AOut of StockContactDFN10#Reel2YesNickel/Palladium/Gold-e4-40 to +85°C
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    Recommended Documents (1)

  1. Datasheet
    ZL1505 Datasheet
    RECOMMENDED
    PDF 652 KB zl1505 Apr 21, 2005

    Datasheets (1)

  1. Datasheet
    ZL1505 Datasheet
    RECOMMENDED
    PDF 652 KB zl1505 Apr 21, 2005

    Application Notes & White Papers (3)

  1. Application Note
    AN1684: Nonideality of Ground
    PDF 397 KB an1684 Jan 19, 2004
    AI-generated Summary: The document outlines important legal disclaimers and usage guidelines for semiconductor products. It emphasizes user responsibility for product design and safety, disclaims liability for damages, and clarifies no intellectual property licenses are granted. Products are categorized by quality grades with specific application recommendations. Users must comply with laws, avoid unauthorized modifications, and ensure safe use within specified conditions. Contact details for Renesas Electronics sales offices worldwide are provided.
  2. Application Note
    AN1681: Grounding Techniques
    PDF 509 KB an1681 Jan 19, 2004
    AI-generated Summary: The document explains grounding techniques for PCB layouts using a dual op amp example on a single-layer copper board. It compares three grounding schemes: a center spine ground trace, an outer ground plane, and a split/star ground plane, highlighting the benefits of single-point grounding to minimize noise and antenna effects. It emphasizes following current paths, minimizing loop lengths, and ensuring close forward and return paths to reduce interference. The document also includes disclaimers on product use, quality grades, safety, and legal compliance.
  3. Application Note
    AN1116: CMOS Applications Information
    PDF 576 KB an1116 Jan 05, 2004
    AI-generated Summary: The document details various CMOS driver circuits including a self-powered DC stable 100V half bridge driver using EL7972 and EL7501, an IGBT half bridge driver with EL7981, and a self-oscillating IGBT driver operating at 25kHz. It also covers a 40W 12V synchronous step-down regulator using EL7761, a simple undervoltage lockout circuit using zener diodes, and a video sync pulse generator with EL7501. Additionally, it explains a resonant gate driver circuit that boosts gate voltage swing and improves efficiency by using external diodes and inductors.
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