S-8355Q24MC-OWJT2U

S-8355Q24MC-OWJT2U is a Switching Controller, classified under PMIC – Voltage Regulators – DC DC Switching Controllers. It is a monolithic-integrated high-side switch controller ideal for Point-of-Load applications, like CPU Vcore, FPGAs, digital/analog power controllers, and other systems requiring low-ripple, adjustable output voltage. It has integrated high-side NMOS/PMOS switch with a wide range of current and voltage ratings, the on-resistance of switch is less than 20 mΩ (typical) and input voltage is 1.8V to 5.5V.

Application field of S-8355Q24MC-OWJT2U

S-8355Q24MC-OWJT2U is designed to operate as a high quality point-of-load (POL) DC-DC buck switch mode controller with a wide operating voltage range. The controller is best suited to be used in high current applications running at a wide range between 1.8V up to 5.5V. It will protect and regulate high current output for CPU Vcore as well as digital/analog systems.

The device can be used to power an array of microcontrollers and digital logic device, LED lighting, battery charging, communication systems and personal computers. This controllers output voltage can be adjusted by an external control pin, making it suitable for applications where the output is required to be adjustable. The S-8355Q24MC-OWJT2U also contains dedicated operating status pins for system monitoring and a temperature monitor, making it suitable for thermal sensitive applications.

Working principle of S-8355Q24MC-OWJT2U

The S-8355Q24MC-OWJT2U integrates a high-side switch controller into a buck regulator application. It consists of two main components: a power stage and a PWM control circuit. An external MOSFET is used to form the power stage and an external control circuit is under the control of the MCU. The controller draws the current input from an external voltage source, then the control circuit regulates and controls the external MOSFET duty cycle to realize the power conversion.

In operation, the external voltage source applies a voltage across the switching regulator’s power stage, generating a power source for the device. Once the power source is established, the controller completes the power conversion process by controlling the PWM duty cycle of the power stage. This high-side switch controller regulates the output voltage by controlling the Duty Cycle of the gate signal.

The controller also contains multiple detection circuits, like Undervoltage lockout (UVLO), Overvoltage protection (OVP), and Over current protection (OCP). These detection circuits can provide a precise, reliable protection circuit to prevent damage caused by excessive current or supply voltage.

In addition, the S-8355Q24MC-OWJT2U is designed to enhance efficiency and save energy by featuring a high-side NChannel power MOSFET rated up to 87% peak efficiency. This feature helps to reduce power dissipation and increase system reliability by conserving energy as much as possible.

S-8355Q24MC-OWJT2U is an excellent switching controller featuring wide operating range and multiple protection features. It can provide low-ripple, adjustable output voltage and helps to reduce power dissipation by featuring a high-efficiency power MOSFET. By protecting the high current applications running at a wide range, S-8355Q24MC-OWJT2U can be widely applied to a large variety of Point-of-Load applications.