Overview
The VIPER20ASPTR-E is a high-performance Switch-Mode Power Supply (SMPS) primary IC developed by STMicroelectronics. This device is part of the VIPower M0 Technology family, which integrates a state-of-the-art PWM circuit with an optimized, high-voltage Vertical Power MOSFET. The VIPER20ASPTR-E is designed for offline power supplies, offering a robust and efficient solution for various power supply applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Continuous Drain-Source Voltage (VDS) | -0.3 to 700 | V |
| Maximum Current (ID) | Internally limited | A |
| Supply Voltage (VDD) | 0 to 15 | V |
| Drain-Source On Resistance (RDS(on)) | 15.5 to 32 | Ω |
| Switching Frequency | Up to 200 kHz | Hz |
| Junction Operating Temperature (TJ) | -65 to 150 | °C |
| Thermal Shutdown Temperature (Ttsd) | 140 to 190 | °C |
| Thermal Shutdown Hysteresis (Thyst) | 40 | °C |
| Power Dissipation at TC= 25°C (PTOT) | 57 | W |
Key Features
- Current Mode Control: The device uses a current mode control method with an inner current control loop and an outer loop for voltage control, ensuring excellent line regulation and dynamic stability.
- Soft Start and Shutdown Control: Features soft start and shutdown capabilities, which can be implemented through the COMP pin using a simple capacitor or a more complex compensation network.
- Automatic Burst Mode Operation: Operates in burst mode during stand-by conditions, meeting the German 'Blue Angel' norm with less than 1W total power consumption.
- Internally Trimmed Zener Reference: Includes an internally trimmed zener reference for stable operation.
- Over-Temperature Protection: Equipped with over-temperature protection to ensure device safety).
- Integrated Start-Up Supply: Features an integrated high voltage current source for start-up, which is switched off during normal operation).
- Low Stand-By Current: Offers low stand-by current, enhancing power efficiency in idle states).
- Adjustable Current Limitation: Allows for adjustable current limitation to protect the device and the system).
Applications
The VIPER20ASPTR-E is suitable for a variety of offline power supply applications, including:
- Offline Power Supplies: Ideal for power supplies with secondary power capabilities ranging from 10W in wide range conditions to 20W in single range or doubler configurations).
- Primary or Secondary Regulation Loops: Compatible with both primary and secondary regulation loops, reducing component count compared to discrete solutions).
- Consumer Electronics: Used in consumer electronics requiring efficient and reliable power supply solutions.
- Industrial Power Supplies: Suitable for industrial applications where high reliability and efficiency are crucial.
Q & A
- What is the maximum drain-source voltage of the VIPER20ASPTR-E?
The maximum drain-source voltage (VDS) is -0.3 to 700 V).
- What is the typical switching frequency of the VIPER20ASPTR-E?
The switching frequency can be adjusted up to 200 kHz).
- Does the VIPER20ASPTR-E have over-temperature protection?
Yes, it includes over-temperature protection with a thermal shutdown temperature range of 140 to 190°C).
- How does the VIPER20ASPTR-E handle stand-by mode?
The device operates in burst mode during stand-by conditions, reducing power consumption to less than 1W).
- What is the purpose of the COMP pin in the VIPER20ASPTR-E?
The COMP pin serves as the output of the error transconductance amplifier and allows for the connection of a compensation network for the regulation loop).
- Can the VIPER20ASPTR-E be used in both primary and secondary regulation loops?
Yes, it is compatible with both primary and secondary regulation loops).
- What is the typical drain-source on resistance (RDS(on)) of the VIPER20ASPTR-E?
The typical RDS(on) is 18 Ω).
- How does the soft start feature work in the VIPER20ASPTR-E?
The soft start feature can be implemented using a simple capacitor connected to the COMP pin, which also serves as the compensation network).
- Does the VIPER20ASPTR-E have an integrated start-up supply?
Yes, it includes an integrated high voltage current source for start-up, which is switched off during normal operation).
- What are the typical applications of the VIPER20ASPTR-E?
Typical applications include offline power supplies with secondary power capabilities ranging from 10W to 20W, and it is used in consumer electronics and industrial power supplies).
