ZHCSI27C April 2018 – October 2021 LM5036
PRODUCTION DATA
In LM5036 device, there are two conditions where the auxiliary supply will enter asynchronous (ASYNC) mode operation where the low-side SR is turned off and only its body diode is allowed to conduct. The first condition is when the half-bridge converter is turned off (Refer to the Section 7.4 section). This helps to reduce the power consumption of the auxiliary supply at light loads. As described in the Section 7.3.20 section, the auxiliary supply will also be forced to operate at ASYNC mode during current limit operation to prevent excessive reverse current.