Overview
The VIPER20ADIP-E is a high-performance SMPS (Switch-Mode Power Supply) primary IC developed by STMicroelectronics. It is fabricated using the advanced VIPower M0 technology, which integrates a state-of-the-art PWM (Pulse Width Modulation) circuit and an optimized high voltage, avalanche rugged Vertical Power MOSFET on the same silicon chip. This device is designed to meet the demands of offline power supplies, offering a robust and efficient solution for various power supply applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VDS (Continuous Drain-Source Voltage) | -0.3 to 700 | V |
| ID (Maximum Current) | Internally limited | A |
| VDD (Supply Voltage) | 0 to 15 | V |
| VOSC (Voltage Range Input) | 0 to VDD | V |
| VCOMP (Voltage Range Input) | 0 to 5 | V |
| ICOMP (Maximum Continuous Current) | ±2 | mA |
| VESD (Electrostatic Discharge) | 4000 | V |
| ID(AR) (Avalanche Drain-Source Current) | 0.4 | A |
| PTOT (Power Dissipation at TC= 25°C) | 57 | W |
| TJ (Junction Operating Temperature) | Internally limited | °C |
| TSTG (Storage Temperature) | -65 to 150 | °C |
| RDS(on) (Static Drain-Source On Resistance) | 18 | Ω |
| tf (Fall Time) | 100 | ns |
| tr (Rise Time) | 50 | ns |
Key Features
- Adjustable Switching Frequency: Up to 200 kHz
- Current Mode Control: Ensures stable and efficient operation
- Soft Start and Shutdown Control: Smooth start-up and shutdown processes
- Automatic Burst Mode Operation: Meets the German 'Blue Angel' norm with less than 1W total power consumption in stand-by mode
- Internally Trimmed Zener Reference: Provides stable voltage reference
- Undervoltage Lock-Out with Hysteresis: Protects against low voltage conditions
- Integrated Start-Up Supply: High voltage current source for start-up phase
- Avalanche Rugged: High voltage Vertical Power MOSFET (700V / 0.5A)
- Overtemperature Protection: Automatic shutdown and restart based on junction temperature
- Low Stand-By Current: Reduced power consumption in stand-by mode
- Adjustable Current Limitation: Customizable current limit for various applications
Applications
The VIPER20ADIP-E is typically used in offline power supplies with secondary power capabilities ranging from 10W in wide range conditions to 20W in single range or doubler configurations. It is suitable for both primary and secondary regulation loops, offering a component count reduction of about 50% compared to discrete solutions
Q & A
- What is the maximum continuous drain-source voltage of the VIPER20ADIP-E?
The maximum continuous drain-source voltage is 700V
- What is the typical switching frequency range of the VIPER20ADIP-E?
The switching frequency can be adjusted up to 200 kHz
- Does the VIPER20ADIP-E support burst mode operation?
Yes, it supports automatic burst mode operation in stand-by conditions, meeting the German 'Blue Angel' norm
- What is the purpose of the integrated start-up supply in the VIPER20ADIP-E?
The integrated start-up supply provides a high voltage current source during the start-up phase
- How does the overtemperature protection work in the VIPER20ADIP-E?
The device automatically shuts down when the junction temperature exceeds a certain threshold and restarts when it cools down
- What is the maximum power dissipation of the VIPER20ADIP-E at 25°C?
The maximum power dissipation is 57W
- Can the VIPER20ADIP-E handle unclamped currents during normal operation?
Yes, it can handle unclamped currents, ensuring self-protection against voltage surges and PCB stray inductance
- What is the typical static drain-source on resistance of the VIPER20ADIP-E?
The typical static drain-source on resistance is 18Ω
- How does the soft start feature work in the VIPER20ADIP-E?
The soft start feature can be implemented using a capacitor on the COMP pin, which also serves as the compensation network
- What is the storage temperature range for the VIPER20ADIP-E?
The storage temperature range is -65°C to 150°C
