REGULATING PULSE WIDTH MODULATORS The SG2525 is a pulse width modulation (PWM) controller IC manufactured by STMicroelectronics. Below are the specifications, descriptions, and features based on Ic-phoenix technical data files:
### **Specifications:**
- **Supply Voltage (VCC):** 8V to 35V
- **Output Current (Source/Sink):** 100mA (per output)
- **Oscillator Frequency Range:** 100Hz to 500kHz
- **Duty Cycle Range:** 0% to 100%
- **Error Amplifier Input Voltage Range:** -0.3V to VCC - 2V
- **Reference Output Voltage:** 5.1V ±1%
- **Reference Output Current:** Up to 50mA
- **Operating Temperature Range:** -40°C to +85°C
- **Package Options:** DIP-16, SO-16
### **Descriptions:**
The SG2525 is a voltage-mode PWM controller designed for switching power supply applications. It provides precise regulation and control for DC-DC converters, inverters, and other power management systems. The IC includes an onboard oscillator, error amplifier, PWM comparator, soft-start control, and dual alternating outputs for driving power MOSFETs or IGBTs.
### **Features:**
- **Adjustable Dead-Time Control:** Ensures safe operation by preventing shoot-through in half-bridge or full-bridge topologies.
- **Soft-Start Functionality:** Gradually increases duty cycle to reduce inrush current.
- **Synchronization Capability:** Allows multiple ICs to operate in sync.
- **Under-Voltage Lockout (UVLO):** Disables outputs when supply voltage is below a safe threshold (~8V).
- **Error Amplifier with High Gain-Bandwidth:** Ensures stable feedback loop performance.
- **Dual Output Drivers:** Alternating outputs with totem-pole configuration for driving external transistors.
- **Shutdown Pin:** Allows immediate disabling of outputs via an external signal.
This information is strictly based on the manufacturer's datasheet for the SG2525 by STMicroelectronics.
