Overview
The VIPER100-E, produced by STMicroelectronics, is a highly integrated offline converter IC that combines a state-of-the-art PWM circuit with an optimized, high voltage, Vertical Power MOSFET on the same silicon chip. This device is part of the VIPower M0 Technology family and is designed for offline power supplies. It supports secondary power capabilities of up to 50W in wide range conditions and up to 100W in single range or with doubler configuration. The VIPER100-E is notable for its reduced component count compared to discrete solutions, making it more efficient and compact.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Continuous Drain-Source Voltage (VDS) | -0.3 to 620 | V |
| Maximum Current (ID) | Internally limited | A |
| Supply Voltage (VDD) | 0 to 15 | V |
| Static Drain-Source On Resistance (RDS(on)) | 2.3 to 4.5 | Ω |
| Power Dissipation at Tc = 25°C (Ptot) | 82 | W |
| Junction Operating Temperature (Tj) | Internally limited | °C |
| Storage Temperature (Tstg) | -65 to 150 | °C |
| Switching Frequency | Up to 200 kHz |
Key Features
- Adjustable Current Limitation: Allows for customizable current limits to suit various application needs.
- Low Stand-by Current: Minimizes power consumption in stand-by mode, meeting the 'Blue Angel' norm of less than 1W total power consumption.
- Integrated Start-up Supply: Provides internal bias current during start-up, eliminating the need for external components.
- UnderVoltage Lock-Out with Hysteresis: Ensures stable operation by preventing the device from operating below a certain voltage threshold.
- Adjustable Switching Frequency up to 200 kHz: Allows for flexible design to meet different application requirements.
- Soft Start and Shutdown Control: Reduces stress on components during start-up and shutdown phases.
- Current Mode Control: Provides excellent line regulation and instantaneous correction to line changes.
- Internally Trimmed Zener Reference: Ensures stable and accurate voltage regulation.
- Over-Temperature Protection: Protects the device from overheating by shutting down when the junction temperature exceeds a certain threshold.
- Automatic Burst Mode Operation in Stand-by Condition: Reduces power consumption in stand-by mode without additional components.
Applications
The VIPER100-E is typically used in offline power supplies, particularly those requiring secondary power capabilities of up to 50W in wide range conditions and up to 100W in single range or with doubler configuration. It is suitable for both primary and secondary regulation loops and is compatible with various configurations, including those with auxiliary supply feedback and optocoupler feedback.
Q & A
- What is the maximum continuous drain-source voltage of the VIPER100-E?
The maximum continuous drain-source voltage (VDS) is -0.3 to 620V.
- What is the typical application range for the VIPER100-E in terms of power capability?
The VIPER100-E is used in offline power supplies with secondary power capabilities of up to 50W in wide range conditions and up to 100W in single range or with doubler configuration.
- Does the VIPER100-E support adjustable switching frequency?
- What is the purpose of the integrated start-up supply in the VIPER100-E?
The integrated start-up supply provides internal bias current during start-up, eliminating the need for external components).
- How does the VIPER100-E manage over-temperature conditions?
The VIPER100-E has over-temperature protection that shuts down the device when the junction temperature exceeds a certain threshold).
- What is the 'Blue Angel' norm and how does the VIPER100-E comply with it?
The 'Blue Angel' norm requires less than 1W total power consumption in stand-by mode. The VIPER100-E complies with this norm through its automatic burst mode operation in stand-by condition).
- Can the VIPER100-E operate in both primary and secondary regulation loops?
- What is the role of the soft start feature in the VIPER100-E?
The soft start feature reduces stress on components during start-up and shutdown phases).
- How does the current mode control in the VIPER100-E ensure line regulation?
The current mode control ensures excellent line regulation and instantaneous correction to line changes through its inner current control loop and outer voltage control loop).
- What is the significance of the internally trimmed Zener reference in the VIPER100-E?
The internally trimmed Zener reference ensures stable and accurate voltage regulation).
