GWS50048

Power (Watts):	500W
Approvals:	CE
Minimum Load Required:	--
Size / Dimension:	8.58" L x 4.13" W x 1.61" H (218.0mm x 105.0mm x 41.0mm)
Mounting Type:	Chassis Mount
Features:	Adjustable Output, DC Input Capable, Remote On/Off, Remote Sense, Universal Input
Operating Temperature:	-25°C ~ 70°C (With Derating)
Efficiency:	90%
Voltage - Isolation:	3kV
Applications:	ITE (Commercial)
Series:	GWS
Current - Output (Max):	10.5A
Voltage - Output 4:	--
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	48V
Voltage - Input:	85 ~ 264 VAC
Number of Outputs:	1
Type:	Enclosed
Part Status:	Active

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AC DC Converters

GWS50048 is an AC-DC converter used in Electronic Speed Controls (ESCs) for high power battery driven brushing motors. It features a dedicated high frequency pulse-width modulation (PWM) based single-ended primary side regulation (PHSR) control scheme and a primary-side sensed current protect circuit that protect the motor from over-current condition, avoiding the need of complex secondary side sensing and control typical of most buck converters.

Applications

The GWS50048 AC-DC converter is designed to meet the stringent requirements of high performance Brushless DC (BLDC) motors for battery powered applications such as drones, medical robotic devices, electric vehicles and home appliances. Some of the key features of the GWS50048 that make it a suitable choice for these applications include:• Low Standby Power Consumption - The GWS50048 has an ultra-low standby power consumption of only 0.5W, ensuring high energy savings even when the system is idle.• High Conversion Efficiency - The GWS50048 has a high conversion efficiency of up to 95%, resulting in less power loss and more efficient operation of your motor.• Low Bill Of Materials (BOM) Cost - The GWS50048 utilizes a PHSR control scheme and requires fewer external components than traditional buck converters, which allows manufacturers to achieve lower costs when building a system.• Robust Performance In Harsh Environments - The GWS50048 is designed to provide reliable operation even in harsh temperature environments with a wide operating temperature range of -20°C to +85°C.

Working Principle

At the heart of the GWS50048 is a high-frequency pulse-width modulation (PWM) based single-ended primary-side regulation (PHSR) control scheme. This control scheme allows the GWS50048 to operate without the need for complex secondary-side sensing and control typical of buck converters.In a typical system, a PHSR controller senses the input VBUS voltage as well as the burden voltage across the main switch connecting the input with the output. The controller then adjusts the PWM duty cycle with respect to the sensed input voltage and burden voltage in order to maintain a constant output voltage.The PHSR controller also senses the inductor current flowing through the main switch in order to protect the motor from over-current conditions. If the current exceeds the set limit, the PHSR controller will shut off the main switch to prevent damage to the motor.For the GWS50048, this control scheme translates to a realizable high efficiency that ranges up to 95%, a low standby power consumption of only 0.5W, and robust performance in harsh environment operating temperatures of -20°C to +85°C.

Conclusion

The GWS50048 is a high performance AC-DC converter ideal for battery powered applications such as drones, medical robotic devices, electric vehicles and home appliances. It features a dedicated high-frequency pulse-width modulation (PWM) based single-ended primary-side regulation (PHSR) control scheme and a primary-side sensed current protect circuit to protect the motor from over-current conditions. Its high conversion efficiency of up to 95% ensures more efficient operation and less power loss, and its low standby power consumption of only 0.5W ensures high energy savings even when the system is idle. The GWS50048 is a suitable choice for those looking for a low BOM cost, high performance, and reliable operation even in harsh environments.

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