Figure 4-10 and Figure 4-11 show the test result of the bypass circuit based on LM746x0-Q1. Channel 2 is the voltage drop of the bypass circuit. Channel 3 is the gate drive voltage of LM74610-Q1. Channel 4 is the bypass current.

The waveform illustrates that this design can effectively bypass the string current with very low voltage drop and provides around a 98.5% duty cycle. This design reduces the power dissipation and improves the system reliability.

Figure 4-10 Bypass Circuit Test Results–Graph A

Figure 4-11 Bypass Circuit Test Results–Graph B