SFFS832A September   2024  – September 2026 UCC27301A-Q1 , UCC27311A-Q1

 

  1.   1
  2.   Trademarks
  3. 1Overview
  4. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 SOIC Package
    2. 2.2 VSON Package
  5. 3Failure Mode Distribution (FMD)
  6. 4Pin Failure Mode Analysis (Pin FMA)
    1. 4.1 SOIC Package
    2. 4.2 VSON Package
  7. 5Revision History

4.1 SOIC Package

Figure 4-1 shows the UCC27301A-Q1 and UCC27302A-Q1 pin diagram for the SOIC package. For a detailed description of the device pins, see the Pin Configuration and Functions section in the UCC27301A-Q1 and UCC27302A-Q1 datasheet.

UCC27301A-Q1 UCC27311A-Q1 UCC27302A-Q1 Pin Diagram (SOIC) PackageFigure 4-1 Pin Diagram (SOIC) Package
Table 4-2 Pin FMA for Device Pins Short-Circuited to Ground
Pin NamePin No.Description of Potential Failure EffectsFailure Effect Class
VDD1No power is applied to the device. HO and LO are in a low state. B
HB2HO and LO are in unknown state.A
HO3HO and LO are in unknown state.A
HS4HO and LO are in unknown state.A
HI5HO is in a low state.B
LI6LO is in a low state.B
VSS7No impact.D
LO8HO and LO are in unknown state.A
Table 4-3 Pin FMA for Device Pins Open-Circuited
Pin NamePin No.Description of Potential Failure EffectsFailure Effect Class
VDD1No power is applied to the device. HO and LO are in a low state. B
HB2HO is pulled to HS potential.B
HO3HO is disconnected from the system.B
HS4HO is pulled to HB potential.B
HI5HO is in a low state.B
LI6LO is in a low state.B
VSS7HO is in a low state. LO is pulled to VDD.B
LO8HO is disconnected from the system.B
Table 4-4 Pin FMA for Device Pins Short-Circuited to Adjacent Pin
Pin NamePin No.Shorted toDescription of Potential Failure EffectsFailure Effect Class
VDD1HBHO and LO are in unknown state.A
HB2HOHO is in unknown state.A
HO3HSHO is in unknown state.A
HS4N/AN/AD
HI5LILO and HO follows the logic truth table per the datasheet. The input states depends on the system.B
LI6VSSLO is in a low state.B
VSS7LOLO is in unknown state.A
LO8N/AN/AD
Table 4-5 Pin FMA for Device Pins Short-Circuited to Supply
Pin NamePin No.Description of Potential Failure EffectsFailure Effect Class
VDD1N/AD
HB2HO and LO are in unknown state.A
HO3HO and LO are in unknown state.A
HS4HO and LO are in unknown state.A
HI5HO and LO follow the logic truth table per the datasheet with LI stuck in a high state.B
LI6HO and LO follow the logic truth table per the datasheet with LI stuck in a high state.B
VSS7HO is in a low state. LO is pulled to VDD.B
LO8HO and LO are in unknown state.A