GP2540-9R

Voltage - Output 3:	--
Approvals:	CE, CSA, EN, IEC, TUV, UL
Size / Dimension:	6.73" L x 4.37" W x 0.78" H (171.0mm x 111.0mm x 19.8mm)
Mounting Type:	Chassis Mount
Operating Temperature:	-40°C ~ 71°C
Efficiency:	88.5%
Applications:	ITE (Commercial), Railway
Power (Watts):	192W
Current - Output (Max):	6.4A, 6.4A
Voltage - Output 4:	--
Series:	Melcher P
Voltage - Output 2:	15V
Voltage - Output 1:	15V
Number of Outputs:	2
Voltage - Input (Max):	50.4V
Voltage - Input (Min):	21.6V
Type:	Isolated, Conformal Coated
Part Status:	Active
Packaging:	--

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DC DC Converters

DC-DC converters are widely used in electrical systems as they provide the flexibility to perform several dc-to-dc conversion operations while allowing for a variety of control and voltage modulation techniques. The GP2540-9R is one such regulator that is a buck-boost-flyback based controller for a capacitive double-ended forward-flyback converter. Its application field and working principle are discussed in this article.

Application Field

The GP2540-9R is a highly efficient and precise dc-dc voltage regulator which is suitable for both isolated and non-isolated configurations. It is widely used in off-line SMPS solutions for telecom and IT infrastructure power supplies as well as in solar energy applications.The GP2540-9R is a 3-phase, 4-transformer based regulator, with an efficiency of up to 96%. Due to its high accuracy and efficiency, the GP2540-9R is well suited for led-lamp, mobile phone, ADSL modem, network adapter, portable computer, and other offline smps applications.

Working Principle

The GP2540-9R works on a buck-boost-flyback based control. In this type of control, the input voltage is compared against a preset level and the output voltage is adjusted according to the difference between the input voltage and the preset level.The GP2540-9R uses a capacitive double-ended forward-flyback converter to generate the regulated voltage. A double-ended flyback converter is a switched mode power supply that is commonly used for regulating a high voltage output at comparable currents and voltages. The buck-boost-flyback based control will switch between buck and flyback mode depending on the input voltage variation.The primary components of the GP2540-9R are the controller IC, the primary side transformers, the secondary side transformers, the rectifier bridge, and the capacitors. The controller IC is responsible for controlling the converter\'s operation and for providing the necessary feedback and control signals.The primary side transformer is responsible for the power transfer from the input to the output side of the converter. The secondary side transformer, rectifier bridge, and capacitors are responsible for regulating the output voltage and providing power factor correction.

Conclusion

The GP2540-9R is a highly efficient and precise dc-dc voltage regulator which is suitable for both isolated and non-isolated configurations. It works on a buck-boost-flyback based control, which utilizes a capacitive double-ended forward-flyback converter to generate the regulated voltage. It is widely used in off-line SMPS solutions for telecom and IT infrastructure power supplies as well as in solar energy applications. This is due to its high accuracy and efficiency.

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