1 Introduction

In the automotive industry, particularly in EV/HEV applications, it is crucial to limit the effects that arise as a result of I/O signals shorting to the battery voltage, V_BAT. This is commonly referred to as Short to Battery protection. One way to achieve this protection is by implementing external diode and resistor networks as shown in Figure 1-1 to keep the input signals within the supply voltage. Alternatively, choosing a device with Injection Current Control circuitry as highlighted in Figure 2-1 eliminates the need for extensive external components to achieve such protection.

Figure 1-1 External Passive Components Implementation