ZHCSMR1C october 2019 – september 2021 UCC5870-Q1
PRODUCTION DATA
AI5 and AI6 are dual purpose inputs. By default, these inputs are configured to be control inputs for the secondary side ASC function (see the ASC section for more details). If AI5 and AI6 are to be used as current sense/ temperature sense/ ADC inputs, write CFG8[AI_ASC_MUX] = 1 (CFG8) to disable the ASC functionality. All of the AI* inputs have current sources that may be enabled using the CFG3[ITO1_EN] bit (CFG3) for AI1,3,5 and the CFG3[ITO2_EN] bit (CFG3) for the AI2,4,6. Additionally, the AI1, AI3, and AI5 inputs are designed with a zero-temperature coefficient bias current (IZTC) to bias the NTC diodes integrated into the external power switch module. Use CFG3[AI_IZTC_SEL] bits (CFG3) to enable the required bias currents for the application. The AI* inputs require an RC filter for most accurate results. See the Section 8.2.2.6 section for details on selecting the correct RC values.