UCD8220 Overview
The UCD8220 analog pulse-width modulator (PWM) device is used in digitally managed power supplies using a microcontroller or the TMS320 DSP family. The UCD8220 device is a double-ended PWM controller configured with push-pull drive logic. UCD8220 Typical Simplified Push-Pull Converter Application Schematic 1 An IMPORTANT NOTIC.
UCD8220 Key Features
- 1 For digitally managed power supplies using μCs or the TMS320 ™ DSP family
- Voltage or peak current mode control with cycleby-cycle current limiting
- Clock input from digital controller to set operating frequency and max duty cycle
- Analog PWM parator
- 2-MHz switching frequency
- 110-V input startup circuit and thermal shutdown
- Internal programmable slope pensation
- 3.3-V, 10-mA linear regulator
- DSP/μC patible inputs
- Dual ±4-A TrueDrive™ integrated circuit high