DATASHEET
ISL78229 FN8656
Rev.5.00
Sep 18, 2017 2-Phase Boost Controller with Drivers and I2C/PMBus Features The ISL78229 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,
comprehensive protection functions, and a PMBus interface for
added control and telemetry. Input/output voltage range: 5V to 55V, withstands 60V
transients Supports synchronous or standard boost topology Peak current mode control with adjustable slope
compensation The ISL78229 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 ISL78229 offers a 90В° output clock and supports
1-, 2-, and 4-phases. 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 The ISL78229 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 …