SP7662ER-L/TR

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The SP7662ER-L/TR is a high-performance non-synchronous 4-switch buck-boost DC-DC regulator from ON Semiconductor. It is a dual-channel device with two independent step-up/step-down (buck-boost) channels, each delivering up to 10A of continuous output current. It is ideal for use in applications that require high voltage accuracy and excellent load transient response, such as switching power supplies, telecommunications systems, computer servers, and consumer electronics.

The SP7662ER-L/TR is optimized to handle input voltages from 1V to 30V and delivers accurate output voltages from 0.5V to 24V. It provides an adjustable soft-start feature to avoid inrush current, as well as overcurrent and overvoltage protection to help prevent damage to the system. The device also includes a built-in bootstrap voltage for external power MOSFETs, and a low-power shutdown mode for improved power efficiency.

The SP7662ER-L/TR is a switching regulator with four N-channel MOSFETs configured in a buck-boost topology. Operation is based on a constant frequency Pulse Width Modulation (PWM) scheme combined with an adaptive peak current control method. This unique combination allows the device to efficiently operate with both step-up and step-down modes, and to efficiently deliver output current over a wide input voltage range.

The operation of the device is based on two main components: the Voltage Reference (VR) and the Error Amplifier (EA). The VR sets the output voltage and is a band-gap type reference voltage. The EA amplifies the voltage difference between the set point (input) and the feedback (output), and outputs a signal to the pulse width modulator (PWM) to adjust the duty cycle of the output regulating signal. The adaptive peak current control is based on detecting the peak drain current of the buck-boost switches and adjusting the ON time dynamically.

In summary, the SP7662ER-L/TR is a 4-switch buck-boost DC-DC regulator from ON Semiconductor that provides up to 10A of continuous current and an adjustable output voltage range of 0.5V to 24V. It is optimized to handle wide input voltage range and provides excellent transient response, while the built-in soft-start, overcurrent protection and low-power shutdown mode make it ideal for use in a wide range applications such as switching power supplies, telecommunication systems, servers, and consumer electronics.

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