The ISL78227 is an automotive grade (AEC-Q100 Grade 1), 2-phase, 55V synchronous boost controller that simplifies the design of high power boost applications. It integrates strong half-bridge drivers, an analog/digital tracking input, and comprehensive protection functions. The ISL78227 enables a simple, modular design for systems requiring power and thermal scalability. It offers peak-current mode control for fast line response and simple compensation. Its synchronous 2-phase architecture enables it to support higher current while reducing the size of input and output capacitors. The integrated drivers 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 prebias 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 compensation
  • Secondary average current control loop
  • Integrated 5V 2A sourcing/3A sinking N-channel MOSFET drivers
  • Switching frequency: 50kHz 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
  • Comprehensive 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

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active WFQFN Tube 60
Availability
Active WFQFN Reel 6000
Availability
Active WFQFN Reel 250
Availability

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL78227 Datasheet Datasheet PDF 2.33 MB
User Guides & Manuals
ISL78227EV1Z User Guide Manual PDF 2.31 MB
Application Notes & White Papers
How to Efficiently Boost Power in High Voltage Automotive Applications White Paper PDF 434 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
Downloads
ISL78227EV1Z Design Files Design File ZIP 1.63 MB
Other
ISL78227 iSim:PE Model Schematic SXSCH 340 KB
Industrial Power Management Brochure ( R16CL0001EJ0200 ) 日本語 Brochure PDF 3.13 MB

Software & Tool Pages

Title Type Description Company
iSim:PE Offline Simulation Tool Simulator iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs. Renesas

Boards & Kits

Part Number Title Type Company
ISL78227EV1Z 2-Phase Boost Controller Evaluation Board Evaluation Renesas
ISL78229EV1Z 2-Phase Boost Controller Evaluation Board Evaluation Renesas