Overview
The VIPER113LSTR from STMicroelectronics is an energy-saving off-line high voltage converter that integrates an 800 V avalanche-rugged power MOSFET with PWM current mode control. This device is designed to meet stringent energy-saving standards, featuring very low consumption and pulse frequency modulation under light load conditions. It supports the design of flyback, buck, and buck-boost converters with a minimal number of components.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | VIPER113LSTR |
| Marketing Status | Active |
| Package | SSOP 10 |
| Grade | Industrial |
| RoHS Compliance Grade | Ecopack2 |
| Transistor Breakdown Voltage (V) | 800 |
| Drain Current (A) | 0.370 |
| RDS(on) (Ω) | 17 |
| Supply Voltage Range | 4.5 V to 30 V |
| Switching Frequency | 30 kHz ± 7% (type X), 60 kHz ± 7% (type L), 120 kHz ± 7% (type H) |
| Operating Temperature (°C) | -40 to 150 |
Key Features
- 800 V avalanche-rugged power MOSFET allowing ultra-wide VAC input range
- Embedded HV startup and sense-FET
- Current mode PWM controller
- Drain current limit protection: 370 mA
- Wide supply voltage range: 4.5 V to 30 V
- Minimized system input power consumption: less than 10 mW at 230 VAC in no-load condition, less than 400 mW at 230 VAC with 250 mW load
- Jittered switching frequency reduces EMI filter cost
- Embedded error amplifier with 1.2 V reference
- Protections with automatic restart: overload/short-circuit, line or output OVP, max duty cycle counter, VCC clamp
- Pulse-skip protection to prevent flux runaway
- Embedded thermal shutdown
- Built-in soft-start for improved system reliability
Applications
The VIPER113LSTR is suitable for various power supply applications, including:
- Flyback, buck, and buck-boost converters
- Offline power supplies
- Adapters and chargers
- Open frame and enclosed power supplies
- General-purpose power conversion where high efficiency and low standby power are required
Q & A
- What is the breakdown voltage of the power MOSFET in the VIPER113LSTR?
The breakdown voltage of the power MOSFET is 800 V. - What are the different switching frequencies available for the VIPER113LSTR?
The switching frequencies are 30 kHz ± 7% (type X), 60 kHz ± 7% (type L), and 120 kHz ± 7% (type H). - What is the drain current limit protection for the VIPER113LSTR?
The drain current limit protection is 370 mA. - What is the supply voltage range for the VIPER113LSTR?
The supply voltage range is from 4.5 V to 30 V. - How does the VIPER113LSTR minimize system input power consumption?
The device minimizes system input power consumption by operating in pulse frequency modulation under light load conditions, consuming less than 10 mW at 230 VAC in no-load condition and less than 400 mW at 230 VAC with a 250 mW load. - What protections are included in the VIPER113LSTR?
The device includes protections with automatic restart for overload/short-circuit, line or output OVP, max duty cycle counter, and VCC clamp. - Does the VIPER113LSTR have built-in thermal shutdown?
Yes, the VIPER113LSTR has embedded thermal shutdown. - What is the purpose of the jittered switching frequency in the VIPER113LSTR?
The jittered switching frequency reduces the EMI filter cost by spreading the energy of each harmonic of the switching frequency over a number of frequency bands. - How does the soft-start function work in the VIPER113LSTR?
The internal soft-start function progressively increases the cycle-by-cycle current limitation set point from zero up to IDLIM in 8 steps, protecting the system at startup and after fault events. - What package type is the VIPER113LSTR available in?
The VIPER113LSTR is available in an SSOP 10 package.
