RT8841GQW

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Applications:	Controller, Intel VRD10, VRD11, AMD CPU
Voltage - Input:	10.8 V ~ 13.2 V
Number of Outputs:	4
Voltage - Output:	--
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	40-WFQFN Exposed Pad
Supplier Device Package:	40-WQFN (6x6)

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Introduction

The RT8841GQW is a high precision, low power, two-phase switching regulator controller suitable for voltage-regulated DC-DC converters. It features an integrated power MOSFET, low ripple and low component count. The RT8841GQW’s precision voltage regulation, high efficiency and thermal protection make it an ideal choice for applications including servers, storage and telecom systems, industrial and medical equipment, automotive electronics, notebook computers and monitor displays.

Application Field

The RT8841GQW is best suited for applications where high-performance DC-DC conversion of non-isolated point-of-load (POL) is needed. It supports two-phase operation, which helps reduce the noise, power consumption and heat dissipation of the system. It also supports a wide range of input and output voltages, including multi-phase and single-phase configurations, which provide flexibility for various designs.The RT8841GQW is designed to provide voltage regulators rated at 12V to 24V. This makes it ideal for such applications such as:

• Server, storage, and telecom applications
• Industrial and medical applications
• Automotive electronics
• Notebook computers
• Monitor displays

Working Principle

The RT8841GQW uses a two-phase interleaved type of buck converter. It consists of two buck converters sharing the same input voltage and output voltage, but with slightly different duty cycles. This increases the efficiency and reduces the output ripple of the converter.The RT8841GQW has two outputs, a VOUT_A and a VOUT_B.The two outputs are regulated by two different PWM circuits which are synchronized to the same switching frequency but with slightly different duty cycles. The RT8841GQW also has the ability to synchronize the switching frequency to an external clock with a frequency range of 100 kHz to 1 MHz. This allows the system to be set up with a multiphase configuration, where multiple converters operate at different frequencies and switching times to spread out the load and reduce the output ripple of the converter. The RT8841GQW also supports dual-loop input/output control, which allows the output to be accurately regulated and reduces losses due to overshoot and undershoot. Finally, the RT8841GQW also has built-in thermal shutdown, overvoltage protection and overcurrent protection, which provide protection to the system in case of abnormal operation.

Conclusion

The RT8841GQW is a two-phase switching regulator controller that can provide high-performance DC-DC conversion of non-isolated point-of-load (POL). It supports a wide range of input and output voltages, including multi-phase and single-phase configurations, as well as dual-loop input/output control, thermal shutdown protection, and overvoltage and overcurrent protection. The RT8841GQW is ideal for applications such as servers, storage and telecom systems, industrial and medical equipment, automotive electronics, notebook computers and monitor displays.

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