JAJSKQ6B May 2020 – March 2021 UCC23513-Q1
PRODUCTION DATA
The input resistor limits the current that flows into the e-diode when it is forward biased. The threshold current IFLH is 2.8 mA typ. The recommended operating range for the forward current is 7 mA to 16 mA (e-diode ON). All the electrical specifications are guaranteed in this range. The resistor should be selected such that for typical operating conditions, IF is 10 mA. Following are the list of factors that will affect the exact value of this current:
Driving the input stage of UCC23513-Q1 using a single buffer is shown in Figure 9-3 and using 2 buffers is shown in Figure 9-4
Table 9-2 shows the range of values for REXT for the 3 different configurations shown in Figure 9-2, Figure 9-3 and Figure 9-4.The assumptions used in deriving the range for REXT are as follows:
REXT Ω | |||
---|---|---|---|
Configuration | Min | Typ | Max |
Single NMOS and REXT | 218 | 290 | 331 |
Single Buffer and REXT | 204 | 272 | 311 |
Two Buffers and REXT | 194 | 259 | 294 |