Overview
The VIPer100-E, produced by STMicroelectronics, is a fixed frequency offline converter integrated circuit (IC) that utilizes the advanced VIPower M0 Technology. This IC combines a state-of-the-art Pulse Width Modulation (PWM) circuit with an optimized, high voltage, Vertical Power MOSFET (620V or 700V / 3A) on the same silicon chip. The device is designed for offline power supplies and can handle secondary power capabilities of up to 50W in wide range conditions and 100W in single range or with doubler configuration. It offers compatibility with both primary and secondary regulation loops, reducing the component count by approximately 50% compared to discrete solutions. The VIPer100-E also features burst mode operation, enabling it to meet the German 'Blue Angel' norm with less than 1W total power consumption in stand-by mode.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VDS (Continuous Drain-Source Voltage) | -0.3 to 620 | 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) | 2 | A |
| Ptot (Power Dissipation at Tc = 25°C) | 82 | W |
| Tj (Junction Operating Temperature) | Internally limited | °C |
| Tstg (Storage Temperature) | -65 to 150 | °C |
| VDSS (Drain-Source Voltage) | 620 | V |
| RDS(on) (Static Drain-Source On Resistance) | 2.3 to 4.5 | Ω |
| tf (Fall Time) | 100 | ns |
| tr (Rise Time) | 50 | ns |
Key Features
- Adjustable Current Limitation: Allows for customizable current limits.
- Low Stand-by Current: Minimizes power consumption in stand-by mode.
- Integrated Start-up Supply: Eliminates the need for external start-up components.
- Undervoltage Lock-out with Hysteresis: Ensures stable operation by preventing undervoltage conditions.
- Adjustable Switching Frequency up to 200 kHz: Provides flexibility in switching frequency.
- Soft Start and Shutdown Control: Smoothly ramps up and down the power supply.
- Current Mode Control: Uses an inner current control loop and an outer voltage control loop for precise regulation.
- Internally Trimmed Zener Reference: Offers a stable voltage reference.
- Over-temperature Protection: Automatically shuts down the device in case of overheating.
- Automatic Burst Mode Operation in Stand-by Condition: Meets the German 'Blue Angel' norm with less than 1W total power consumption.
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 100W in single range or with doubler configuration. It is suitable for both primary and secondary regulation loops, making it versatile for various power supply designs.
Q & A
- What is the maximum drain-source voltage of the VIPer100-E?
The maximum drain-source voltage (VDS) is 620V.
- What is the typical application range for the VIPer100-E?
Typical applications cover offline power supplies with secondary power capabilities of up to 50W in wide range conditions and 100W in single range or with doubler configuration.
- What is the significance of the burst mode operation in the VIPer100-E?
The burst mode operation allows the device to meet the German 'Blue Angel' norm with less than 1W total power consumption in stand-by mode, reducing overall power consumption.
- How does the VIPer100-E handle over-temperature conditions?
The device features over-temperature protection, automatically shutting down when the junction temperature exceeds a certain threshold (typically 170°C) and restarting when the temperature decreases.
- What is the role of the integrated start-up supply in the VIPer100-E?
The integrated start-up supply eliminates the need for external start-up components, simplifying the design and reducing component count.
- Can the switching frequency of the VIPer100-E be adjusted?
Yes, the switching frequency of the VIPer100-E can be adjusted up to 200 kHz.
- How does the current mode control topology work in the VIPer100-E?
The current mode control uses an inner current control loop and an outer voltage control loop to regulate the peak current through the power switch and the primary winding of the transformer, ensuring excellent line regulation and stability.
- What is the significance of the undervoltage lock-out with hysteresis in the VIPer100-E?
The undervoltage lock-out with hysteresis prevents the device from operating in undervoltage conditions, ensuring stable operation and preventing potential damage.
- Can the VIPer100-E be synchronized with an external clock?
Yes, the VIPer100-E provides a synchronization capability through the OSC pin, allowing it to be synchronized with an external frequency source.
- How does the VIPer100-E reduce component count compared to discrete solutions?
The VIPer100-E reduces the component count by approximately 50% compared to discrete solutions by integrating multiple functions on the same silicon chip.
