Cursed circuits: charge pump voltage halver
9 days ago
- #electronics
- #voltage-regulation
- #charge-pump
- Charge pumps are efficient alternatives to linear regulators for voltage adjustment in electronic circuits.
- A basic charge pump architecture is a voltage doubler, which is common in digital chips like op-amps and MCUs.
- Charge pumps use capacitors and transistors to transfer charge, creating doubled or negative voltages.
- A voltage-halving charge pump topology uses a flying capacitor to maintain a stable output voltage at half the supply voltage.
- Switched-capacitor lowpass filters are noisier than R-C filters but are easier to implement on IC dies.