The VIPer12A is a low power offline SMPS primary switcher that combines a dedicated current mode PWM controller with a high voltage Power MOSFET. It has a fixed 60kHz switching frequency, a wide range of 9V to 38V VDD voltage, current mode control, auxiliary undervoltage lockout with hysteresis, high voltage start up current source, and overtemperature, overcurrent, and overvoltage protection with autorestart. It is suitable for applications such as battery charger adapters, standby power supplies for TV or monitors, and auxiliary supplies for motor control.
This handbook describes the VIPer12ADIP and VIPer12AS low‑power off‑line SMPS primary switcher. It includes a description of the device, pin functions, and typical applications such as battery charger adapters, standby supplies for TVs or monitors, and auxiliary supplies for motor control.
Key sections cover absolute maximum ratings, thermal data, detailed electrical characteristics for the power, supply, oscillator, PWM comparator, and over‑temperature sections, as well as figures illustrating rise/fall times, start‑up behavior, and thermal shutdown performance.
| Supply Voltage (Vop) | 0 … 50 V |
|---|---|
| Feedback Current (lea) | 3 mA |
| Thermal Resistance Junction‑Case (Rthj‑case) SO‑8 | 25 °C/W |
| Fixed Switching Frequency | 60 kHz |
The device operates at a fixed 60 kHz switching frequency.
The device includes over‑temperature, over‑current, and over‑voltage protection with auto‑restart.