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PMIC - AC DC Converters, Offline Switchers

The VIPER53ESP-E is a high performance offline switcher offering the best combination of performance, size and cost. It offers up to five programmable output voltages, a wide input range of up to 48 VDC, and a maximum load of 5 A for flexible design optimization.This IC can be used in a variety of applications, such as LED drivers, battery chargers, isolated power supplies, and non-isolated power supplies.

Application Field

The VIPER53ESP-E is ideal for applications that require a wide input range of up to 48 VDC and a high output current of 5A, or for applications requiring a small size for cost sensitive designs. It is suitable for a variety of applications including LED drivers, battery chargers, isolated power supplies, and non-isolated power supplies. It also provides excellent power conversion efficiency with a typical operating efficiency of up to 90%.

Working Principle

The VIPER53ESP-E is an offline switching IC which works on the principle of buck converter. It has a high input voltage range of up to 48 VDC and a peak current mode control, which helps in the regulation of output voltage. The IC offers programmable output voltage with a precision of ±1%: available output voltages are 325 mV, 500 mV, 800 mV, 1.2 V, and 1.6 V. It also offers current sensing, over voltage protection, and under voltage lockout protection which helps in protecting the load from over current or over voltage failure. The IC also features power saving mode and temperature monitoring, which helps in improving the efficiency of the circuitry.

The VIPER53ESP-E provides several features to optimize the efficiency including Conduction Mode Control (CCM), Frequency Modulation (FMB) and Over Temperature Protection (OTP). The CCM reduces switching losses, the FMB increases efficiency over the whole load range, and the OTP prevents the IC from overheating. Additionally, the VIPER53ESP-E has a built-in Soft-Start option which ensures reliable start-up during overload conditions.

Conclusion

The VIPER53ESP-E is an excellent choice for applications requiring high power conversion efficiency, wide input voltage range, and peak current mode control. It also provides programmable output voltages, current sensing, over voltage protection, and under voltage lockout protection, making it an ideal choice for applications such as LED drivers, battery chargers, isolated power supplies, and non-isolated power supplies.

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