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WT76016T
The WT76016T provides protection circuits, power good output (PGO), fault protection latch (FPOB), and a protection detector function (PSONB) control. It can minimize external components of switching power supply systems in personal computer. The Over Voltage Detector (OVD) monitors VX, V12A, V12B, V12C, V12D, V12E and V12F input voltage level. The Under Voltage Detector (UVD) monitors V12A, V12B, V12C, V12D, V12E, V12F input voltage level. The Over Current Detector (OCD) monitor I12A&V12A, I12B&V12B, I12C&V12C, I12D&V12D, I12E&V12E and I12F&V12F input current sense. The pin VX provides an extra protection function. When OVD or UVD or OCD or VX detect the fault voltage level, the FPOB is latched HIGH and PGO go low. The latch can be reset by PSONB go HIGH. There is 4 ms delay time for PSONB turn off FPOB. When OVD and UVD and OCD detect the right voltage level, the power good output (PGO) will be issue.
Features
- The Over Voltage Detector (OVD) monitors VX and six channel I12&V12 input pins.
- The Over Current Detector (OCD) monitors six channel I12&V12 input pins.
- Six Channels for I12V&V12 OCD with auto calibration
- The VX > 1.2V provide an extra protection.
- Both of the power good output (PGO) and fault protection latch (FPOB) are Open Drain Output.
- 250ms time delay for PGO.
- 38 ms for PSONB input signal De–bounce.
- 55 us VX internal signal De–bounce.
- 25 ms or 35 ms or 140ms for OCD internal signal De–bounce.
- 73 us for PGI internal signal De–bounce.
- 4 ms for PSONB turn-off FPOB
- Short-circuit turn-on protection
– 75 ms delay to enable UV/OC/VX detection, depends on PGI condition.
option:
– Enable OC/UVP/VX detection when PGI>1.2V
– Disable OC/UVP/VX detection when PGI<1.2V
option:
– Enable OC/UVP/VX detection when PGI>0.65V at power on mode
– Disable OC/UVP/VX detection when PGI<0.65V at power on mode
– Enable OC/UVP/VX detection when PGI>1.2V at normal mode
– Disable OC/UVP/VX detection when PGI<1.2V at normal mode
- Package Type: PDIP-20 and SOP-20
- Option: VX Over voltage detection can be switched to Master/Slave mode.
- The Over Voltage Detector (OVD) monitors VX and six channel I12&V12 input pins.
應用領域
