VIPER35HDTR - 800V Off-Line High Voltage Converter | STMicroelectronics
Артикул: VIPER35HDTR ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $1.8826 | $1,88 |
VIPER35HDTR Обзор
An off-line switching regulator is a power management IC that converts AC mains voltage directly to a regulated DC output without a bulky line-frequency transformer. It integrates the power switch, control logic, and protection circuits into a single package, enabling compact and efficient power supplies. The VIPER35HDTR belongs to the VIPER35 family of off-line converters, which are part of STMicroelectronics' VIPER series of high-voltage converters. These devices are widely used in smart meters, home appliances, and industrial control systems where low standby power and high reliability are critical.
Key features of the VIPER35HDTR include a fixed 60 kHz switching frequency, which balances efficiency and EMI filter size. The device offers a burst-mode operation at light load, reducing standby power consumption to less than 50 mW at 265VAC. It includes comprehensive protection features such as overcurrent protection (OCP), overvoltage protection (OVP), thermal shutdown, and a built-in soft-start to reduce stress during startup. The high-voltage startup circuit eliminates the need for an external startup resistor, simplifying the design and reducing component count.
The VIPER35HDTR uses a current-mode control architecture, providing good line and load regulation. The integrated 800V Power MOSFET has a low RDS(on) of 11 ohm, minimizing conduction losses. The device is available in an SO-8 package with a thermal resistance of 100 C/W, allowing adequate heat dissipation for power levels up to 8W with proper PCB copper area. The operating junction temperature range is -40C to +150C, ensuring reliable operation in harsh environments.
Typical applications include auxiliary power supplies for smart meters, home appliances such as washing machines and refrigerators, industrial control systems, and LED lighting drivers. The wide input voltage range and high efficiency make it ideal for global power supply designs. The device also supports both buck and flyback topologies, providing design flexibility.
When designing with the VIPER35HDTR, ensure proper PCB layout with a sufficient copper area for thermal dissipation. The high-voltage pins must be spaced adequately to prevent arcing. The feedback loop should be compensated to ensure stability across the full load range. The burst-mode operation at light load reduces standby power but may introduce audible noise; use a proper snubber circuit to mitigate this.
Аналоги без доработки для VIPER35HDTR — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
VIPER35LDTR
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
VIPER35HD
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
VIPER35HDTR-1
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
LNK304GN
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
TNY274GN
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
VIPER35HDTR Максимальные параметры и электрические характеристики
| Диапазон входного напряжения | 85 VAC to 265 VAC |
| Output Power (Buck) | 8 W (230 VAC) |
| Output Power (Flyback) | 5 W (230 VAC) |
| Частота переключения | 60 kHz |
| Breakdown Voltage | 800 V |
| RDS(on) | 11 ohm |
| Standby Power | < 50 mW at 265 VAC |
| Рабочая температура перехода | -40C to +150C |
| Корпус | SO-8 |
| Тип монтажа | Surface Mount |
| Control Mode | Current Mode |
| Protection Features | OCP, OVP, Thermal Shutdown |
| Плавный пуск | Built-in |
| Статус RoHS | Compliant |
| Уровень MSL | 1 |
Конфигурация выводов VIPER35HDTR
| Контакт 1 | DRAIN — Power MOSFET drain |
| Контакт 2 | DRAIN — Power MOSFET drain |
| Контакт 3 | GND — Ground |
| Контакт 4 | FB — Feedback input |
| Контакт 5 | VCC — Supply voltage |
| Контакт 6 | GND — Ground |
| Контакт 7 | SOURCE — Power MOSFET source |
| Контакт 8 | SOURCE — Power MOSFET source |
Типичное применение
VIPER35HDTR подходит для 6 применениеs: Smart Meter Power Supply, Home Appliance Power Supply, Industrial Control System, LED Lighting Driver, Auxiliary Power Supply for IoT Devices, Battery Charger.
Smart Meter Power Supply
The VIPER35HDTR provides an efficient and compact power supply for smart meters, converting mains voltage to a regulated DC rail. Its wide input range (85-265VAC) ensures operation across global grids, while the low standby power (<50mW) meets energy regulations. The integrated 800V MOSFET and current-mode control deliver stable output for metering circuits. In a typical smart meter, the VIPER35HDTR is used in a flyback topology to generate isolated 5V and 3.3V rails for the microcontroller and communication modules. The high-voltage startup circuit eliminates external startup resistors, reducing component count. The burst-mode operation at light load minimizes power consumption during standby, extending the meter's operational life. The built-in protections (OCP, OVP, thermal shutdown) safeguard the meter against grid transients and overloads, ensuring long-term reliability in outdoor installations.
Рекомендуется
Home Appliance Power Supply
The VIPER35HDTR is ideal for power supplies in home appliances such as washing machines, refrigerators, and air conditioners. It provides a cost-effective solution for generating auxiliary power rails (e.g., 5V, 12V) for control boards and user interfaces. The device's high efficiency and low standby power help appliances meet energy efficiency standards like Energy Star. In a washing machine, the VIPER35HDTR is used in a buck topology to step down the rectified mains to a 12V rail for the motor driver and a 5V rail for the microcontroller. The fixed 60kHz switching frequency simplifies EMI filter design, reducing board space. The thermal shutdown protection prevents damage during high-temperature operation, such as when the appliance is in a confined space. The wide input range ensures stable operation even with fluctuating grid voltages.
Рекомендуется
Industrial Control System
In industrial control systems, the VIPER35HDTR provides a reliable power supply for PLCs, sensors, and actuators. Its wide input range and robust protections make it suitable for harsh industrial environments. The device's high breakdown voltage (800V) allows it to handle voltage spikes common in industrial settings. The VIPER35HDTR is used in a flyback topology to generate isolated power rails for field devices, ensuring safety and noise immunity. The current-mode control provides excellent line and load regulation, critical for sensitive control circuits. The built-in soft-start reduces inrush current during power-up, preventing stress on external components. The device's operating temperature range (-40C to +150C) ensures reliable operation in extreme conditions, such as in outdoor industrial installations.
Рекомендуется
LED Lighting Driver
The VIPER35HDTR can be used in LED lighting drivers to convert mains voltage to a constant current or voltage for LED strings. Its high efficiency and low standby power make it suitable for energy-efficient lighting. The device's wide input range supports global lighting standards. In a typical LED driver, the VIPER35HDTR is used in a buck topology to provide a constant voltage rail, which is then regulated by a constant current LED driver IC. The 60kHz switching frequency allows for a small inductor, reducing the overall size of the driver. The burst-mode operation at light load reduces power consumption when the LED is dimmed, improving overall efficiency. The built-in protections ensure safe operation under fault conditions, such as LED short circuits or open circuits.
Рекомендуется
Auxiliary Power Supply for IoT Devices
The VIPER35HDTR is suitable for auxiliary power supplies in IoT devices, such as smart home hubs and sensors. Its compact SO-8 package and low component count make it ideal for space-constrained designs. The low standby power (<50mW) is crucial for battery-backed or energy-harvesting systems. In an IoT device, the VIPER35HDTR is used in a flyback topology to generate isolated 3.3V and 5V rails for the microcontroller and wireless module. The high-voltage startup circuit reduces the number of external components, simplifying the design. The device's protections ensure reliable operation in always-on applications. The wide input range allows the device to be used in different regions without modification.
Рекомендуется
Battery Charger
The VIPER35HDTR can be used in battery charger applications, providing a regulated output voltage for charging batteries. Its high efficiency and low standby power make it suitable for portable chargers. The device's wide input range supports universal input. In a battery charger, the VIPER35HDTR is used in a flyback topology to provide a constant voltage/current output, which is then controlled by a battery charging IC. The current-mode control ensures stable operation during constant current charging. The built-in protections prevent overcurrent and overvoltage conditions, protecting the battery and the charger. The device's low standby power reduces energy consumption when the charger is idle.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для VIPER35HDTR — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | VIPER35LDTR | LNK304GN | TNY274GN |
|---|---|---|---|---|
| Package | SO-8 | SO-8 | SO-8 | SO-8 |
| Brand | STMicroelectronics | STMicroelectronics | Power Integrations | Power Integrations |
| Breakdown Voltage | 800 V | 650 V | 700 V | 700 V |
| Output Power (Buck) | 8 W | 8 W | 4 W | 6 W |
| Switching Frequency | 60 kHz | 60 kHz | 66 kHz | 132 kHz |
| RDS(on) | 11 ohm | 11 ohm | 23 ohm | 12 ohm |
| Standby Power | < 50 mW | < 50 mW | < 50 mW | < 50 mW |
| Protection Features | OCP, OVP, Thermal Shutdown | OCP, OVP, Thermal Shutdown | OCP, OVP, Thermal Shutdown | OCP, OVP, Thermal Shutdown |
Ключевые отличия
- Higher breakdown voltage (800V) than VIPER35LDTR (против VIPER35LDTR)
- Lower RDS(on) than LNK304GN (против LNK304GN)
- Higher output power than LNK304GN (против LNK304GN)
Заметки по проектированию
Ensure adequate copper area for thermal dissipation. The SO-8 package has a thermal resistance of 100 C/W; for 8W output, the power dissipation is around 2W, requiring at least 1 square inch of copper on the PCB. Place the device away from heat-sensitive components.
Keep the high-voltage DRAIN traces short and wide to minimize parasitic inductance and EMI. Maintain proper creepage distance between high-voltage and low-voltage pins. Use a snubber circuit across the transformer primary to reduce voltage spikes.
Do not exceed the maximum junction temperature of 150C. Ensure the feedback loop is properly compensated to avoid instability. The burst-mode operation at light load may cause audible noise; use a proper snubber or adjust the feedback network to mitigate.
Информация о соответствии
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified.
