ESH1DM RSG

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	200V
Current - Average Rectified (Io):	1A
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 1A
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	25ns
Current - Reverse Leakage @ Vr:	1µA @ 200V
Capacitance @ Vr, F:	3pF @ 4V, 1MHz
Mounting Type:	Surface Mount
Package / Case:	2-SMD, Flat Lead
Supplier Device Package:	Micro SMA
Operating Temperature - Junction:	-55°C ~ 150°C

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Introduction

ESH1DM RSG is a single-phase bridge rectifier made of silicon dioxide, which stands for silicon dioxide rectifier. It consists of a discrete rectifier, a resonant gate driver, and one or more capacitors for transient suppression. This bridge rectifier is intended for single-phase mains rectification applications, such as the Grid-connected Rectifiers in Power factor Correction (PFC) circuits. It offers low switching losses, high power density, and adjustable switching frequency. This makes it an ideal candidate for a variety of applications that primarily require a high power-density solution.

Applications

The ESH1DM RSG bridge rectifier is used in various industrial and home appliance applications including switching mode power supplies, transformerless power warehouses, battery chargers, solar inverters and UPS systems. In all these applications, it is used for mains rectification. Its most common application is PFC (Power Factor Correction) circuits. It eliminates the use of bulky and costly transformers, resulting in a small packagesized design that translates into a high power density. In addition to PFC circuits, the ESH1DM RSG bridge rectifier is also used in off-line converters, such as LLC (Inductor Inductance Converter) for Maximum Power Point Tracking (MPPT). It is frequently implemented in electric vehicles, managing the voltage and current of the propulsion system at different climate conditions. Further applications include motor control, AC motor speed variators, frequency converters, high-brightness LED drivers, and constant current supplies.Finally, its switching characteristics enable it to be widely used in electric transformers, rectifier bridges, three-phase rectifiers and pulse circuits.

Advantages

The use of the ESH1DM RSG bridge rectifier offers some major advantages, such as:

• High power density, resulting from small package size.
• Low switching losses. The rectifier is able to switch at much higher frequencies than a traditional bridge rectifier, doing so more efficiently.
• A wide operating temperature range for reliable performance.
• Flexible design, enabling it to work in different applications such as LLC and PFC circuits.
• Highly reliable performance. The rectifier allows for over-voltage and over-current protection with adjustable dead time.
• High-speed transient response.

Working Principle

This rectifier works in two modes, a diode conduction mode, and a resonant operation mode. In the diode conduction mode, it operates as a four-diode bridge rectifier, rated for 200V, 100A and 350kHz switching frequency. In this mode, the four rectifiers are driven in a unipolar fashion. The rectifiers are switched in a way that minimizes switching losses, resulting in low EMI (electromagnetic interference) and higher efficiency. In the resonant operation mode, ESH1DMRSG is driven in a bipolar fashion, meaning that the switches are driven in opposite directions, allowing the current to flow both directions in the same phase. This mode is designed to engage in conditions of high current needs, providing a greater efficiency in comparison to the diode conduction mode. Moreover, the rectifier can be adjusted by changing the frequency of the switching process. This frequency allows users to select the best combinations of power, gate drive power, and the EMI noise needed in the application. This can be done, by simply changing the frequency of the drive signal on the gate driver, depending on the demands of the specific application.

Conclusion

The ESH1DM RSG bridge rectifier provides designers with an efficient, compact and reliable solution for their mains rectification needs. Its flexible design and low switching losses allow it to be used in a variety of applications, with adjustable switching frequency for enhanced performance. Thanks to its high power density and wide operating temperature range, it is able to meet the demands of most demanding applications. In addition, its advanced gate-driver design offers protection for applications needing over voltage and over current protection. All in all, the ESH1DM RSG bridge rectifier provides an ideal solution for single-phase mains rectification applications.

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