TLD5098EL Datasheet, PDF (26/39 Pages) Infineon Technologies AG – DC/DC Boost, Buck-Boost, SEPIC controller

TLD5098EL
Protection and Diagnostic Functions
9.2
Electrical Characteristics
Table 5 EC Protection and Diagnosis
V_IN = 8V to 34V; T_j = -40 ⋅C to +150 ⋅C, all voltages with respect to ground, positive current flowing into pin; (unless
otherwise specified)
Pos. Parameter
Symbol
Limit Values
Unit Conditions
Min. Typ. Max.
Short Circuit Protection
9.2.1 FBH and FBL Short-Circuit fault V_{FBL,FBH_S2G} 1.5
–
2
V refer to Figure 15
sensing common mode range
V_FBH=V_FBL
decreasing
Temperature Protection:
9.2.2 Over Temperature Shutdown T_j,SD
160 175 190 °C ¹⁾ refer to Figure 13
9.2.3 Over Temperature Shutdown T_j,SD,HYST
–
15
–
°C ¹⁾
Hystereses
Overvoltage Protection:
9.2.4
9.2.5
Output Over Voltage Feedback
Threshold Increasing
Output Over Voltage Feedback
Hysteresis
V_OVFB,TH
V_OVFB,HYS
1.21
50
1.25
–
1.29
150
V refer to Figure 14
mV ¹⁾ Output Voltage
decreasing
9.2.6 Over Voltage Reaction Time t_OVPRR
2
–
10
µs Output Voltage
decreasing
9.2.7
Over Voltage Feedback Input
Current
I_OVFB
-1
0.1
1
µA V_OVFB = 1.25V
Open Load and Open Feedback Diagnostics
9.2.8 Open Load/Feedback
Threshold
V_REF,1,3
-100 –
-20 mV refer to Figure 11
V_REF = V_FBH - V_FBL
Open Circuit 1 or 3
9.2.9 Open Feedback Threshold
V_REF,2
0.5
–
1
V
V_REF = V_FBH - V_FBL
Open Circuit 2
1) Specified by design; not subject to production test.
Note: Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
Datasheet
26
Rev. 1.0, 2010-10-13