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2022-09-24 22:26:30
KA7500B-Switching Power Supply Controller
Explain that the KA7500B is used for PWM control circuit switching regulator. The KA7500B consists of a 5V reference voltage circuit, two error amplifiers, a flip-flop, an output control circuit, a PWM comparator, a dead-time comparator and an oscillator. The device operates at a switching frequency of 1kHz to 300kHz.
Features • Internal regulator provides a regulated 5V voltage reference supply trimmed to 5%
• Uncommitted 200mA output sails SINK or SOURCE current • Controlled for push-pull output or single-ended operation • Variable to dead time control (pin 4) Duty cycle complete PWM control circuit • On-chip oscillator for master or slave operation • The internal circuit prohibits any double pulse output