This post explains for the regulator. A PWM (Pulse Width Modulation) switching regulator is a type of voltage regulator used in electronics to efficiently convert one voltage level to another. It operates by rapidly switching a power transistor on and off, and varying the duty cycle (the ratio of on-time to off-time) of the switching signal to control the output voltage. PWM switching regulators are commonly used in various applications, including power supplies, motor control, and LED drivers, due to their high efficiency and ability to provide precise voltage regulation.
The Part Number is STRW6253D, STR-W6253D.
The function of this semiconductor is PWM Switching Regulator.
The package is TO-220 Type
Manufacturer: Allegro Microsystems
Preview images :
STR-W6253D is 60 W-Universal Input/90 W-230 Vac Input PWM Switching Regulator.
The STRW-6200D series are current-mode PWM ICs that incorporate controller chips. These devices are manufactured using a proprietary high-voltage BCD process, and avalanche-guaranteed MOSFETs. These elements allow power supply systems designs that are highly reliable and simple, with fewer peripheral components. These ICs also provide Auto-Burst
mode operation, which lowers input power requirements at light loads, and improves efficiency over the entire load range and universal-input range.
Features and Benefits :
1. Overcurrent protection (OCP) with ac input voltage compensation function; no additional peripheral circuits required—minimizes dependency of OCP on ac input
2. Overload protection (OLP) with integrated timer reduces power stress (temperature rise) at overload condition, requires no peripheral components
3. Avalanche-guaranteed MOSFET improves device capability of withstanding excess surge voltage, providing a simple surge absorber circuit without breakdown voltage derating
4. Start-up circuit eliminates the need for a start-up resistor, and helps to reduce input power consumption Continued on the next page […]