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UC3825ADW +BOM

Texas Instruments UC3825ADW PWM Current Mode Controller

Manufacturer:

Texas Instruments
Mfr.Part #:

UC3825ADW
Datasheet:

UC3825ADW Datasheet (PDF)
Topology:

Boost, Buck, Flyback, Forward, Full bridge, Half bridge, Push pull
Control mode:

Current, Voltage
Duty cycle (max) (%):

50
Switching frequency (max) (kHz):

1000
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UC3825ADW General Description

The UC3825ADW is a pulse-width modulation (PWM) controller designed for use in high-power, high-efficiency switching power supplies. It features a wide input voltage range of 10V to 20V, making it suitable for a variety of applications. The device is capable of driving both high- and low-side power MOSFETs, allowing for efficient power conversion with minimal losses.The UC3825ADW includes a programmable oscillator, which enables the user to set the switching frequency according to their specific requirements. It also features a voltage feedforward control loop, which helps to improve the load regulation of the power supply. Additionally, the device incorporates overcurrent and overvoltage protection circuits to ensure reliable operation under varying load conditions.

Key Features

UC3825ADW is a versatile pulse width modulation controller IC

It offers adjustable deadtime control to prevent shoot-through in push-pull or half-bridge configurations

The IC includes a high-speed error amplifier, allowing for precise voltage regulation

It features a flexible oscillator with adjustable frequencies up to 500kHz

UC3825ADW has a voltage reference precision of ±1%

Application

The UC3825ADW is commonly used in power supply systems, motor control applications, uninterruptible power supplies (UPS), and battery charging circuits

It is also well-suited for use in inverters, converters, and other power management systems requiring high-frequency pulse-width modulation control

Specifications

Topology	Boost, Buck, Flyback, Forward, Full bridge, Half bridge, Push pull	Control mode	Current, Voltage
Duty cycle (max) (%)	50	Switching frequency (max) (kHz)	1000
Features	Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Leading edge blanking, Multi-topology, Programmable max duty cycle, Soft start, Synchronization pin	UVLO thresholds on/off (V)	9.2/8.4
Operating temperature range (°C)	0 to 70	Rating	Catalog
Gate drive (typ) (A)	2	Vin (max) (V)	22