Overview
The UC2825DWTR is a high-performance PWM (Pulse Width Modulation) controller from Texas Instruments, designed for high-frequency switched-mode power supply applications. This device is part of the UC1825 family and is optimized for minimizing propagation delays and maximizing bandwidth and slew rate of the error amplifier. It is compatible with both voltage-mode and current-mode topologies, making it versatile for various power supply designs.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Package | SOIC (DW) | - |
| Pins | 16 | - |
| Operating Temperature Range | -40°C to 85°C | °C |
| Supply Voltage | Up to 30V | V |
| Switching Frequency | Up to 1MHz | Hz |
| Propagation Delay to Output | 50ns | ns |
| Peak Output Current | 1.5A | A |
| Under-Voltage Lockout (UVLO) | 8.8V to 9.2V | V |
| UVLO Hysteresis | 0.4V to 1.2V | V |
| Start-Up Current | 1.1mA | mA |
Key Features
- Compatible with voltage or current mode topologies
- Practical operation at switching frequencies up to 1MHz
- 50ns propagation delay to output
- High current dual totem pole outputs (1.5A peak)
- Wide bandwidth error amplifier
- Fully latched logic with double pulse suppression
- Pulse-by-pulse current limiting
- Soft start / maximum duty cycle control
- Under-voltage lockout with hysteresis
- Low start-up current (1.1mA)
Applications
The UC2825DWTR is designed for high-frequency switched-mode power supply applications, including but not limited to:
- DC-DC converters
- Power factor correction (PFC) circuits
- Off-line power supplies
- High-frequency power amplifiers
Q & A
- What is the operating temperature range of the UC2825DWTR?
The operating temperature range is -40°C to 85°C.
- What is the maximum switching frequency of the UC2825DWTR?
The maximum switching frequency is up to 1MHz.
- What is the peak output current of the UC2825DWTR?
The peak output current is 1.5A.
- What is the under-voltage lockout (UVLO) threshold of the UC2825DWTR?
The UVLO threshold is between 8.8V and 9.2V.
- What is the start-up current of the UC2825DWTR?
The start-up current is 1.1mA.
- Is the UC2825DWTR compatible with both voltage and current mode topologies?
- What is the propagation delay to output of the UC2825DWTR?
The propagation delay to output is 50ns.
- Does the UC2825DWTR have pulse-by-pulse current limiting?
- What is the package type of the UC2825DWTR?
The package type is SOIC (DW) with 16 pins.
- What are some common applications of the UC2825DWTR?
