AN2475
From emboxit
Motorola AN2475
- Motorola Generating a PWM Signal Modulated by an Analog Input Using the MC68HC908QY4 Microcontroller AN2475 also here Is a CPU controlled SMPS
It is possible to achieve a regulated voltage of 2.5 V with less than 30 mV variation driving a current load from 20 mA to 280 mA.
- DUTY CYCLE CHANGES LINEARLY WITH INPUT VOLTAGE
- If regulation can not be achieved, period is changed
