Overview
The VIPer50A-E, produced by STMicroelectronics, is a fixed-frequency offline converter IC that integrates a state-of-the-art PWM circuit and 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 use in offline power supplies. It supports secondary power capabilities of up to 25W in wide range conditions and up to 50W in single range or with a doubler configuration. The VIPer50A-E is compatible with both primary and secondary regulation loops and reduces component count by approximately 50% compared to discrete solutions. It also features burst mode operation, enabling it to operate in standby mode without additional components, meeting the stringent “Blue Angel” norm of less than 1W total power consumption.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage | European standard 230Vac ± 15% |
| Output Voltage 1 | 6.5 V ± 3% at 2.5 A |
| Output Voltage 2 | 10 V ± 8% at 1.5 A |
| Standby Consumption | < 1 W |
| Efficiency | > 80% |
| Max Working Ambient Temperature | 60°C |
| MOSFET Voltage/Current Rating | 700V / 1.5A |
| Switching Frequency | Up to 200 kHz |
Key Features
- Adjustable current limitation
- Low stand-by current
- Integrated start-up supply
- Undervoltage lock-out with hysteresis
- Adjustable switching frequency up to 200 kHz
- Soft start and shutdown control
- Current mode control
- Internally trimmed Zener reference
- Over-temperature protection
- Automatic burst mode operation in stand-by condition
Applications
The VIPer50A-E is primarily used in offline power supplies, particularly in consumer applications where energy efficiency and reliability are crucial. It is suitable for designing SMPS (Switch-Mode Power Supplies) that need to meet international or local energy-saving standards such as the “Blue Angel” norm. Typical applications include power supplies for electronic devices, home appliances, and other consumer electronics that require efficient and cost-effective power management solutions.
Q & A
- What is the VIPer50A-E?
The VIPer50A-E is a fixed-frequency offline converter IC produced by STMicroelectronics, combining a PWM circuit and a high-voltage Vertical Power MOSFET on the same silicon chip.
- What are the typical applications of the VIPer50A-E?
Typical applications include offline power supplies for consumer electronics, home appliances, and other devices requiring efficient power management.
- What is the maximum output power capability of the VIPer50A-E?
The VIPer50A-E can support up to 25W in wide range conditions and up to 50W in single range or with a doubler configuration.
- How does the VIPer50A-E reduce component count?
The VIPer50A-E reduces component count by approximately 50% compared to discrete solutions.
- What is the standby power consumption of the VIPer50A-E?
The standby power consumption is less than 1W, meeting the “Blue Angel” norm.
- What are the key features of the VIPer50A-E?
Key features include adjustable current limitation, low stand-by current, integrated start-up supply, undervoltage lock-out with hysteresis, and more.
- How does the VIPer50A-E handle short circuit protection?
The VIPer50A-E uses a Zener diode to clamp the voltage on the Comp pin, limiting the maximum primary peak current during short circuits.
- What is the maximum working ambient temperature for the VIPer50A-E?
The maximum working ambient temperature is 60°C.
- How does the burst mode operation work in the VIPer50A-E?
The VIPer50A-E operates in burst mode automatically when the power delivered to the load becomes very low, reducing the switching frequency to minimize power consumption.
- What is the switching frequency range of the VIPer50A-E?
The switching frequency can be adjusted up to 200 kHz.
