UPC494G-T2中文资料SWITCHING REGULATOR CONTROL CIRCUIT数据手册Renesas规格书

描述 Description

DESCRIPTION
The µPC494 is an inverter control unit which provides all the control circuitry for PWM type switching regulators. Included in this device is the voltage reference, dual error amplifiers, oscillator, pulse width modulator, pulse steering flip flop, dual alternating output switches and dead-time control.FEATURES
• Complete PWM power control circuit.
• Adjustable dead-time (0 to 100%).
• No double pulsing of same output during load transient condition.
• Dual error amplifiers have wide common mode input voltage capability (−0.3 V to VCC−2 V).
• Circuit architecture provides easy synchronization.
• Uncommitted outputs for 250-mA sink or source.
• With miss-operation prevention circuit for low level supply voltage.
• Full pin-compatible TL494C.

特性 Features

• Complete PWM power control circuit.
• Adjustable dead-time (0 to 100%).
• No double pulsing of same output during load transient condition.
• Dual error amplifiers have wide common mode input voltage capability (−0.3 V to VCC−2 V).
• Circuit architecture provides easy synchronization.
• Uncommitted outputs for 250-mA sink or source.
• With miss-operation prevention circuit for low level supply voltage.
• Full pin-compatible TL494C.