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High power DC/DC complete circuit diagram controlled by LTC3722-1

Source: InternetPublisher:aerobotics Keywords: High power circuit diagram LTC Updated: 2021/12/06

LTC 3722 - 1/2 phase-shifted PWM controller provides all the control functions of a full-bridge zero-voltage switching (ZVS) for high-efficiency conversion. The adaptive mode ZVS circuit delay function provides the turn-on signal to each MOSFET to overcome the deviation of each component. The manual delay setting method allows the secondary side synchronous rectification drive signal to directly achieve turn-on delay.

The LTC3722-1/2 also features adjustable synchronous rectification timing for optimal efficiency. After UVL0 adjusts the input voltage and adds it, the system has accurate turn-on and turn-off voltages. LTC3722-1 is a peak current control method that can accurately adjust slope compensation and leading edge clipping. LTC3722-2 adopts voltage type control and has various voltage feedforward functions.

In addition, both ICs have extremely low starting current and operating current, have complete protection functions, and adopt a 24PIN surface-mounted appearance structure.

The complete circuit of high-power DC/DC controlled by LTC3722-1 is shown in Figure 1:

Click to enlarge
Figure 1 High-power DC/DC complete circuit controlled by LTC 3722-1

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