EC7401QI

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The EC7401QI is a voltage regulator designed specifically for sub 55 V DC-DC switching controllers and is used in many applications. It is designed to provide ultra-high precision voltage regulation over a broad input voltage range and require a minimal board-space.

EC7401QI is a step-up DC-DC switching single-cycle controller that can contain up to 15A current and is capable of producing voltages up to 55V. A unique feature of the EC7401QI is the provided internal soft start time selectable 1ms, 2ms, 4ms and 6ms plus adjustable voltage range up to 20V. The device includes adjustable output over-voltage protection and includes a complementary reset signal for further-power savings.

The device uses a fixed frequency architecture with a combination of a voltage-mode, current-mode control and phase-locked loop to maintain stability and accuracy while minimizing the adjustment of phase compensation. An adjustable pre-bias voltage prevents the load from seeing a false start, reducing the requirement for an additional resistor-capacitor (RC) snubber at the output. The switching frequency is adjustable to allow for optimal efficiency across a wide load range and an adjustable dead-time allows for high output ripple suppression.

When used as an application controller, the EC7401QI provides a voltage reference to a non-isolated buck/boost topology, outputs a positive and a negative signal to drive the external MOSFETs, and performs other functions such as frequency foldback, soft-start, and current-mode output frequency control. A unique feature of the device is the internal, adjustable soft-start time selection for fast start-up without overshoot. The EC7401QI also features an integrated, programmable task clock that operates from an external 32.768 kHz crystal and an integrated voltage monitor with selectable shutdown voltage levels.

The device provides programmable current limit for both constant-voltage and constant-current output, with an adjustable dead-time to minimize the input and output voltage spikes during the charging and discharging periods of the MOSFETs. The current limiting can also be bypassed to simplify the design process.

In addition, the device also provides adjustable voltage loop response settings and adjustable voltage loop circuitry settings, that could potentially be used to compensate design deficiencies in PCB layout or part selection. The EC7401QI has an adjustable switching frequency that allows for use in many different applications and provides up to 90% efficiency. It also contains over-temperature protection.

Overall, the EC7401QI is a high performance DC-DC switching single-cycle controller suited for applications that require ultra-high precision voltage regulation. It requires no external components and provides adjustable settings to simplify the design process.

The specific data is subject to PDF, and the above content is for reference