Overview
The MC33025DWR2 is a high-speed, double-ended Pulse Width Modulation (PWM) controller produced by onsemi. This integrated circuit is specifically designed for offline and DC-to-DC converter applications, offering a cost-effective solution with minimal external components. It features an oscillator, a temperature-compensated reference, a wide bandwidth error amplifier, a high-speed current sensing comparator, and dual high-current totem pole outputs ideal for driving power MOSFETs. The device includes protective features such as input and reference undervoltage lockouts, cycle-by-cycle current limiting, and a latch for single pulse metering.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | onsemi |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 105°C (TA) |
| Output Isolation | Isolated |
| Topology | Half-Bridge |
| Voltage - Supply (Vcc/Vdd) | 8.4V ~ 30V |
| Voltage - Start Up | 9.2V |
| Frequency - Switching | 1MHz |
| Duty Cycle | 45% |
| Fault Protection | Current Limiting |
| Internal Switch(s) | No |
| Control Features | Frequency Control, Soft Start |
Key Features
- High-speed, fixed frequency operation
- Double-ended PWM controller
- Temperature-compensated reference
- Wide bandwidth error amplifier
- High-speed current sensing comparator
- Dual high-current totem pole outputs for driving power MOSFETs
- Protective features: input and reference undervoltage lockouts, cycle-by-cycle current limiting, and a latch for single pulse metering
- Flexibility for either current mode or voltage mode control
- 50 ns propagation delay to outputs
Applications
- Offline and DC-to-DC converter applications
- High-frequency power supply systems
- Switch-mode power supplies
- Power MOSFET drivers
Q & A
- What is the operating temperature range of the MC33025DWR2?
The operating temperature range is -40°C to 105°C (TA).
- What is the package type of the MC33025DWR2?
The package type is 16-SOIC (0.295", 7.50mm Width).
- What is the switching frequency of the MC33025DWR2?
The switching frequency is 1MHz.
- Does the MC33025DWR2 have internal switches?
No, it does not have internal switches.
- What are the control features of the MC33025DWR2?
The control features include frequency control and soft start.
- What is the duty cycle of the MC33025DWR2?
The duty cycle is 45%.
- What type of fault protection does the MC33025DWR2 have?
The fault protection includes current limiting.
- Is the MC33025DWR2 RoHS compliant?
No, it contains lead and is RoHS non-compliant.
- What is the start-up voltage for the MC33025DWR2?
The start-up voltage is 9.2V.
- What are the typical applications of the MC33025DWR2?
Typical applications include offline and DC-to-DC converter applications, high-frequency power supply systems, and switch-mode power supplies.
