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.