FAN5066M

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Output Type:	Transistor Driver
Function:	Step-Down
Output Configuration:	Positive
Topology:	Buck
Number of Outputs:	1
Output Phases:	1
Voltage - Supply (Vcc/Vdd):	4.75 V ~ 5.25 V
Frequency - Switching:	80kHz ~ 1MHz
Duty Cycle (Max):	95%
Synchronous Rectifier:	Yes
Clock Sync:	No
Serial Interfaces:	--
Control Features:	Enable, Power Good
Operating Temperature:	0°C ~ 70°C (TA)
Package / Case:	20-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	20-SOIC
Base Part Number:	FAN5066

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Introduction

FAN5066M is an advanced, low-side, non-inverting synchronous DC/DC switching controller with integrated MOSFET drivers and protection from OCP, overvoltage and inrush current. The FAN5066M is the fourth generation of a highly efficient SMBus controlled DC/DC switching regulator for synchronous buck and boost topologies. With the folding ability for the buck and synchronous buck topologies, the FAN5066M can also be used in applications such as SEPIC or any other synchronization or foldback topology. The FAN5066M is an ideal solution for power management ICs (PMICs) where multi-output voltage levels are needed.

Typical Application Field of FAN5066M

The FAN5066M is highly suitable for powering various point-of-load (POL) applications such as cache and I/O voltage regulation, CPU core voltage regulation and active power-over-Ethernet (PoE) applications. It can also be used in a variety of battery-powered systems such as notebook and portable systems, as well as automotive BMS and in-vehicle infotainment systems.

Working Principle of FAN5066M

The FAN5066M features an integrated power stage that acts as a direct interface between the PMIC and the regulated output voltage. The power stage is an DC/DC converter with an integrated pulse width modulator (PWM) and n-channel MOSFET drivers. The PWM supports a wide range of modulation frequencies up to 1MHz. The PWM switches the corresponding MOSFETs of the power stage, thereby providing regulation for the output voltage. The output voltage regulation is further enhanced by the integrated Advanced Current Limiting (ACL) feature that can modify the modulated signal to reduce output current. The FAN5066M also features an integrated soft-start function that ensure smooth start-up of the circuit.

Protection and Control Features of FAN5066M

The FAN5066M offers comprehensive protection features for safe and reliable system operation. It provides OCP, inrush current limiter, overvoltage protection and dynamic inductor current sense protection (DCS). The OCP is adjustable via a dedicated programming pin. The device also includes an adjustable inrush current limit feature to prevent high inrush current. The FAN5066M also features an adjustable OVP that can be set using an external resistor. The device provides complete system control, monitoring and programming capabilities. It includes SMBus/I2C compatible input/output pin interfaces, four advanced monitoring outputs (AMPF, AVR, BOVF and ACF) and GPIO options to help control system functions.

Conclusion

The FAN5066M from FAN Engineering is an advanced, low-side, non-inverting synchronous DC/DC switching controller with integrated MOSFET drivers and protection from OCP, overvoltage, inrush current and dynamic inductor current sense (DCS). The device is highly suitable for a wide range of point-of-load (POL) applications including CPU core voltage regulation, active PoE and many other battery-powered systems. It provides system control and protection features such as OCP, adjustable inrush current limit, overvoltage protection and more. The FAN5066M provides a complete system control, monitoring and programming capability with SMBus/I2C compatible inputs/outputs and GPIO options.

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