Current-Mode PWM Controller The TL3843DR is a current-mode PWM controller manufactured by Texas Instruments (TI). Below are the specifications, descriptions, and features based on the factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Topology:** Current-mode PWM controller
- **Input Voltage Range (VCC):** 8.5V to 30V
- **Output Duty Cycle Range:** 0% to 100%
- **Switching Frequency:** Up to 500kHz
- **Output Current (Peak):** ±1A (sink/source)
- **Error Amplifier Bandwidth:** 1MHz
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** SOIC-8
### **Descriptions:**
The TL3843DR is a high-performance PWM controller designed for DC-DC converter applications. It operates in current-mode control, providing precise regulation and fast transient response. The device includes an error amplifier, a current-sensing comparator, a totem-pole output driver, and an oscillator. It is commonly used in power supplies, battery chargers, and industrial applications.
### **Features:**
- **Current-Mode Control:** Improves loop response and simplifies compensation.
- **Adjustable Switching Frequency:** Up to 500kHz for flexible design.
- **Undervoltage Lockout (UVLO):** Ensures proper operation within the input voltage range.
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.
- **Soft-Start Capability:** Reduces inrush current during startup.
- **Low Startup Current:** Typically 0.5mA for efficient operation.
- **Error Amplifier with Reference:** Provides stable feedback control.
- **Wide Operating Temperature Range:** Suitable for industrial environments.
This information is based on the manufacturer's datasheet and technical documentation.
