ISL6420BEVAL1Z (20 Ld QFN) and the ISL6420BEVAL2Z (20 Ld QSSOP) boards evaluate the ISL6420B advanced single synchronous buck PWM controller. They are configured for an output voltage of 3.3V and 10A maximum load.
The ISL6420B simplifies the implementation of a complete control and protection scheme for a high performance DC/DC buck converter. The IC can be operated with an input voltage range from 4.5V to 5.5V or 5.5V to 28V. It is designed to drive N-channel MOSFETs in a synchronous rectified buck topology. The control, output adjustment, monitoring and protection functions are all located in a single package.
- Operates From: 4.5V to 5.5V Input, 5.5V to 28V Input
- 0.6V Internal Reference Voltage: ±2.0% Reference Accuracy:
- Resistor-Selectable Switching Frequency: 100kHz to 1.4MHz
- Voltage Margining and External Reference Tracking Modes
- Output can Sink or Source Current
- Lossless, Programmable Overcurrent Protection: Uses Upper MOSFET's rDS(ON)
- Programmable Soft-Start
- Drives N-Channel MOSFETs
- Simple Single-Loop Control Design: Voltage-Mode PWM Control
- Fast Transient Response: High-Bandwidth Error Amplifier, Full 0% to 100% Duty Cycle
- Extensive Circuit Protection Functions: PGOOD, Overvoltage, Overcurrent, Shutdown
- Diode Emulation during Startup for Pre-Biased Load Applications
- Power Supplies for Microprocessors/ASICs
- Embedded Controllers
- DSP and Core Processors
- DDR SDRAM Bus Termination
- Ethernet Routers and Switchers
- High-Power DC/DC Regulators
- Distributed DC/DC Power Architecture
- Personal Computer Peripherals
- Externally Referenced Buck Converters
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