FSDL321

Duty Cycle:	77%
Base Part Number:	FSDL321
Mounting Type:	Through Hole
Supplier Device Package:	8-DIP
Package / Case:	8-DIP (0.300", 7.62mm)
Operating Temperature:	-25°C ~ 85°C (TA)
Control Features:	--
Fault Protection:	Current Limiting, Over Load, Over Temperature, Over Voltage
Power (Watts):	17W
Frequency - Switching:	50kHz
Series:	FPS™
Voltage - Supply (Vcc/Vdd):	8 V ~ 20 V
Voltage - Start Up:	12V
Topology:	Flyback
Voltage - Breakdown:	650V
Internal Switch(s):	Yes
Output Isolation:	Isolated
Part Status:	Discontinued at Digi-Key
Packaging:	Tube

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Introduction

FSDL321 is an integrated power management integrated circuit (PMIC) that provides both AC and DC conversion, as well as an offline switcher in one integrated unit. The device is designed to provide a single-output system power solution up to 3A. It is highly integrated with power block, system controller and a broad range of features such as integrated voltage feedback, base-drive control, clock synchronization and dynamic load balancing, making it ideal for any high-performance application or system.

Qualities of FSDL321

The FSDL321 PMIC offers an integrated, single-output power solution of up to 3A and a flexible system-level control. It integrates advanced power and control functions such as voltage feedback, which provides an accurate and stable output voltage, base-drive control, which provides the ability to dynamically adjust the base-drive to respond to varying load conditions, clock synchronization for improved efficiency and dynamic load balancing to ensure a balanced load between multiple outputs. Additionally, the device supports a variety of output power configurations, a wide range of output voltage levels, as well as configurable operating frequency and power profiles. The efficient power management of the FSDL321 is supported by input voltage sequencing, allowing multiple rails to be simultaneously powered, and a digitized on-rail to provide a more accurate power delivery over multiple loads. An efficient current limitation circuit is integrated to maximize power delivery while minimizing power losses.The FSDL321 also offers a variety of features to support system integration, including an integrated standby mechanism to reduce power consumption in the standby mode, and a PGOOD signal to indicate power availability.

AC/DC Conversion

The FSDL321 provides both AC and DC conversion capabilities with integrated flyback, forward, and buck switching. The device can operate over a wide input voltage range and provides a wide range of output power solutions up to 3A. The power converter is optimized for high efficiency and low noise over a wide operating range and includes a broad range of features such as digital soft-start and synchronization with external clock sources.

Offline Switchers

The FSDL321 supports switch-mode power supplies (SMPS) up to 3A. The device can be configured to operate in either a buck, boost, or buck-boost configuration. In addition, the device supports output current limitation, pulse frequency modulation (PFM) operation, and programmable under/over-voltage lockout. It also features low power consumption in standby mode.

Conclusion

The FSDL321 is a highly integrated PMIC that provides a single-output system power solution up to 3A. Its combination of power and control functions, AC/DC conversion, and offline switchers make it ideal for high-performance applications. Its features such as input voltage sequencing, current limitation, digitized on-rail, soft-start, and synchronization with external clock sources make it a highly efficient and robust power solution for any system that needs reliable power delivery.

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