Overview
The VIPER100A-E, produced by STMicroelectronics, is a fixed frequency offline converter that integrates a state-of-the-art PWM circuit and an optimized, high voltage, Vertical Power MOSFET (700V/3A) on the same silicon chip. This device is part of STMicroelectronics’ proprietary VIPower (Vertical Intelligent Power) technology, which allows the integration of analog control circuits with vertical power devices on the same chip. The VIPER100A-E is designed for offline power supplies, capable of delivering up to 100W in single range or 50W in universal input conditions. It features burst mode operation, low standby current, and compatibility with both primary and secondary regulation loops, reducing the component count by approximately 50% compared to discrete solutions.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Category | Integrated Circuits (ICs) - PMIC - AC DC Converters, Offline Switchers |
| Package | Pentawatt-5 HV (Bent and Staggered Leads) |
| Internal Switch(s) | Yes |
| Voltage - Breakdown | 700V |
| Topology | Flyback |
| Voltage - Start Up | 11V |
| Voltage - Supply (Vcc/Vdd) | 8 V ~ 15 V |
| Frequency - Switching | Up to 200kHz |
| Power (Watts) | 100W |
| Fault Protection | Current Limiting, Over Temperature |
| Control Features | EN, Frequency Control, Soft Start |
| Mounting Type | Surface Mount |
Key Features
- Adjustable current limitation
- Low standby 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, meeting “Blue Angel” norm (<1W total power consumption)
Applications
The VIPER100A-E is suitable for various offline power supply applications, including those requiring high efficiency and low standby power consumption. Typical applications include:
- Offline power supplies with secondary power capabilities of 50W in wide range conditions and 100W in single range or with doubler configuration.
- Audio equipment power supplies where stable output voltage is crucial during peak current demands.
- General-purpose AC-DC converters requiring high reliability and efficiency.
Q & A
- What is the maximum breakdown voltage of the VIPER100A-E?
The maximum breakdown voltage of the VIPER100A-E is 700V.
- What is the switching frequency range of the VIPER100A-E?
The switching frequency of the VIPER100A-E can be adjusted up to 200 kHz.
- What are the typical power output capabilities of the VIPER100A-E?
The VIPER100A-E can deliver up to 100W in single range or 50W in universal input conditions.
- Does the VIPER100A-E support burst mode operation?
Yes, the VIPER100A-E features automatic burst mode operation in stand-by condition, meeting the “Blue Angel” norm (<1W total power consumption).
- What type of topology does the VIPER100A-E use?
The VIPER100A-E uses a flyback topology.
- What is the package type of the VIPER100A-E?
The VIPER100A-E comes in a Pentawatt-5 HV (Bent and Staggered Leads) package.
- Does the VIPER100A-E have over-temperature protection?
Yes, the VIPER100A-E includes over-temperature protection.
- Can the VIPER100A-E be used for both primary and secondary regulation?
Yes, the VIPER100A-E is compatible with both primary and secondary regulation loops.
- What is the purpose of the burst mode operation in the VIPER100A-E?
The burst mode operation in the VIPER100A-E helps in reducing power consumption during stand-by conditions, meeting the “Blue Angel” norm (<1W total power consumption).
- How does the VIPER100A-E manage low load conditions?
In low load conditions, the VIPER100A-E automatically switches to burst mode operation to maintain efficiency and reduce power consumption.
