SFFS480 September 2022 SN6507-Q1
Figure 4-1 shows the SN6507-Q1 pin diagram for the DGQ-10 package. For a detailed description of the device pins please refer to the Pin Configuration and Functions section in the SN6507-Q1 data sheet.
| Pin Name | Pin No. | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|
| SW1 | 1 | SW1 pin stuck low creates short circuit path between Vcc and ground through transformer winding, causing high current to flow and possible damage to transformer. Output voltage out of designed spec. | B |
| GND | 2 | Device continues to function as expected. Normal operation. | D |
| VCC | 3 | No power to the device. No isolated output voltage. | B |
| EN/UVLO | 4 | Enable stuck low, so the device remains in shutdown mode. | B |
| DC | 5 | No Clock output and No Push pull converter operation. | B |
| SR | 6 | No Push pull converter operation. | B |
| CLK | 7 | With CLK stuck low, external clock synchronization functionality is disabled. May have system level concerns if transformer not designed for 1MHz. | B |
| SS/LIM | 8 | The device will not transfer from soft-start to normal operation mode. No soft-start operation and No Push pull converter operation. | B |
| GND | 9 | Device continues to function as expected. Normal operation. | D |
| SW2 | 10 | SW2 pin stuck low creates short circuit path between Vcc and ground through transformer winding, causing high current to flow and possible damage to transformer. Output voltage out of designed spec. | B |
| PowerPAD | 11 | Device continues to function as expected. Normal operation. | D |
| Pin Name | Pin No. | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|
| SW1 | 1 | With SW1 open, one primary transformer winding does not transfer energy. Isolated output supply out of intended set-point. | B |
| GND | 2 | Current returns through pin 9. | C |
| VCC | 3 | No power to device, so no switching action of SW1/SW2. Isolated output voltage does not build up. | B |
| EN/UVLO | 4 | Enable voltage is undefined, so the device remains in shutdown mode. | B |
| DC | 5 | Duty-cycle is configured to default. | C |
| SR | 6 | Slew-rate is configured to default. | C |
| CLK | 7 | With CLK pin open, swicthing functionality is stopped. | B |
| SS/LIM | 8 | No current limit or soft-start times set. Performance degradation. | C |
| GND | 9 | Current returns through pin 2. | C |
| SW2 | 10 | With SW2 open, one primary transformer winding does not store energy. Isolated output supply out of intended set-point. | B |
| PowerPAD | 11 | Current returns through pin 2 and 9. | D |
| Pin Name | Pin No. | Shorted to | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|---|
| SW1 | 1 | GND | SW1 stuck low. SW1 FET stays off, no current flows from supply to ground. Isolated output supply out of intended set-point. | B |
| GND | 2 | VCC | High current flows from supply to ground. No power to device. | B |
| VCC | 3 | EN/UVLO | Control to disable the device through EN/UVLO is lost. | B |
| EN/UVLO | 4 | DC | If EN/UVLO voltage exceeds DC pin Absolute Maximum Voltage Rating, device damage is plausible. | A |
| DC | 5 | EN/UVLO | Same as above | A |
| SR | 6 | CLK | The desired switching frequency or slew-rate performance may not be achieved. Slew-rate control circuit may not function. | B |
| CLK | 7 | SS/LIM | The desired switching frequency or current-limit/soft-start performance may not be achieved. Current limit/soft-start circuit may not function. | B |
| SS/LIM | 8 | GND | The device will not transfer from soft-start to normal operation mode. No soft-start operation and No Push pull converter operation. | B |
| GND | 9 | SW2 | SW2 stuck low. SW2 FET stays off, no current flows from supply to ground. Isolated output supply out of intended set-point. | B |
| SW2 | 10 | GND | SW2 stuck low. SW2 FET stays off, no current flows from supply to ground. Isolated output supply out of intended set-point. | B |
| PowerPAD | 11 | SW2 | Same as above | B |
| Pin Name | Pin No. | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|
| SW1 | 1 | SW1 stuck high. Makes potential difference between one transformer winding zero. When SW1 FET switches on, high current flows from supply to ground. Isolated output supply out of intended set-point. | A |
| GND | 2 | No power to device, so no switching action of SW1/SW2. Isolated output voltage does not build up. | B |
| VCC | 3 | No effect. Normal operation. | D |
| EN/UVLO | 4 | With EN stuck high, functionality to disable the device lost. | B |
| DC | 5 | If supply voltage exceeds DC pin Absolute Maximum Voltage Rating, device damage is plausible. | A |
| SR | 6 | If supply voltage exceeds SR pin Absolute Maximum Voltage Rating, device damage is plausible. | A |
| CLK | 7 | If supply voltage exceeds CLK pin Absolute Maximum Voltage Rating, device damage is plausible. | A |
| SS/LIM | 8 | If supply voltage exceeds SS pin Absolute Maximum Voltage Rating, device damage is plausible. | A |
| GND | 9 | No power to device, so no switching action of SW1/SW2. Isolated output voltage does not build up. | B |
| SW2 | 10 | SW2 stuck high. Makes potential difference between one transformer winding zero. When SW2 FET switches on, high current flows from supply to ground. Isolated output supply out of intended set-point. | A |
| PowerPAD | 11 | No power to device, so no switching action of SW1/SW2. Isolated output voltage does not build up. | B |