E910.22

Pinout




Specifications

• Flyback converter with wide input range of 3V to 55V
• 5V first output voltage
• Additional output voltages possible with additional windings on transformer
• Softstart capability
• ON control input with wide input voltage range
• Precise, programmable windowed watchdog
• Low standby current (50A typical)
• Open load stable
• Snapback output current after short circuit on load
• K15D control input
• Self-oscillating, multi-loop regulation
• Non dissipating primary current simulation
• Degausing input and variable delayed switch on
• Push/pull driver for logic level Power-MOSFET
• No shunt needed
•  40C to + 125 C operating temperature
• Additional system-enable output for critical modules
• SO20 package

Description

The E910.22 IC is developed and optimized for automotive applications where it can generate different output voltages as a flyback converter. The input voltage may be higher or lower than the output voltage. The E910.22 multi-loop regulation concept ensures fast response to input voltage and load changes. The reset circuit generates a reliable reset signal until the output is in tolerance and the integrated, programmable windowed watchdog guarantees a minimum and maximum software reset time. An additional system-enable output enables critical components after the controller has served the watchdog three times to guarantee a save controller wake up sequence. This successful wake up also enables the HOLD-capability so that the controller can keep the converter running without ON and K15D active.