AN732 Description
AN732 Vishay Siliconix Designing A High-Voltage Non-Isolated Buck-Boost Converter with the Si9121DY Nitin Kalje INTRODUCTION The Si9121DY is a non-isolated buck-boost converter IC, operating from a wide input voltage range of 10 to 60 V with minimal external ponents. This polarity inverter converts 48 V to +5 V or +3.3 V, making it suitable for applications including digital phones and ISDN power supplies. A...
AN732 Key Features
- GM + R2- +
- VREF 1.25 V +
- + H 10 mA VCC Soft Start 2 mA VNEG P
- + Low Side Error Amp
- + R Q S 3 BYPASS Bias/ Reference Circuit OCL + 0.67 V
- 50% Max. PWM Duty Cycle