Applications

• ACDC converters with high-voltage resistive signal paths

• Ideal for all very low standby systems such as those meeting EuP

Lot 6 and similar energy efficiency standards

Description

SENZero™ is a compact low-cost solution to eliminate losses in resistive

signal paths connected between high-voltage rails and switching power

supply controller(s). Examples include feed-forward or feedback signal

paths connected to boost controllers in power factor corrected systems

and feed-forward signal paths in two switch forward / LLC / half and

full bridge converters.

The device is available in 2 (SEN012) and 3 (SEN013) channel versions

according to the application’s requirements. The internal gate drive

and protection circuitry provides gate drive signals to the internal 650 V

MOSFETs in response to the voltage applied to the VCC pin. This

simple configuration provides easy integration into existing systems by

using the system VCC rail as an input to the SENZero.

The SENZero family uses a low cost compact SO-8 package to reduce

PCB area while the pin configuration is designed to meet pin-pin fault

conditions.