BiCMOS Low-Power Current Mode PWM Controller The UCC28C43D is a high-performance current-mode PWM controller from Texas Instruments. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Texas Instruments
- **Type:** Current-Mode PWM Controller
- **Topology:** Flyback, Forward, Boost, Buck
- **Output Configuration:** Single-Ended
- **Number of Outputs:** 1
- **Switching Frequency:** Up to 1 MHz
- **Duty Cycle (Max):** 100%
- **Supply Voltage (Vcc):** 8.4V to 18V (Start-Up), 7.6V to 18V (Operating)
- **Supply Current (Start-Up):** 0.5 mA (Typ)
- **Supply Current (Operating):** 2.5 mA (Typ)
- **Output Current (Source/Sink):** 1A (Peak)
- **Error Amplifier Gain Bandwidth:** 1 MHz (Typ)
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** SOIC-8
### **Descriptions:**
- The UCC28C43D is a versatile PWM controller designed for high-frequency DC-DC power conversion applications.
- It features current-mode control for improved transient response and simplified loop compensation.
- Includes an onboard error amplifier, oscillator, PWM comparator, and totem-pole output driver.
- Suitable for offline and isolated power supplies.
### **Features:**
- **Current-Mode Control:** Enhances line and load regulation.
- **Programmable Oscillator:** Allows flexible frequency setting via external components.
- **Soft-Start Capability:** Reduces inrush current during startup.
- **Undervoltage Lockout (UVLO):** Ensures proper operation within supply voltage limits.
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.
- **Error Amplifier with Reference:** Provides precise voltage regulation.
- **Leading-Edge Blanking:** Improves noise immunity in current sensing.
- **Low Start-Up and Operating Current:** Improves efficiency.
This information is strictly based on the manufacturer's datasheet.
