1、看了半天的datasheet，也可以看出BOOT1和BOOT2两个引脚是什么意思？
This capacitor is charged from the BP pin voltage through an internal switch. The switch is turned ON during the off time of the converter. To slow down the turn ON of the internal FET, a small resistor (2 Ω to 5Ω) may be placed in series with the bootstrap capacitor.究竟想表达个什么意思？
2、两路输出的电源的时序是怎么调节、控制的？
3、是否能提供一份中文版的datasheet，或者应用手册
