Datasheet

Data Sheet ADP1046A
Rev. 0 | Page 49 of 88
Table 10. Register 0x02—Fault Register 3 and Register 0x06—Latched Fault Register 3 (1 = Fault, 0 = Normal Operation)
Bits Bit Name R/W Description Register Action
7 OTP R Temperature is above OTP limit. 0x2F Programmable
6 Fast OVP R Fast OVP threshold was exceeded. 0x37 Programmable
5 Share bus R Current share is outside regulation limit. 0x2A Programmable
4 Constant current R Power supply is operating in constant current mode (constant
current mode is enabled).
0x27 None
3 Soft start R The reference is being ramped. None
2 Line impedance R Line impedance between VS2 and VS3± is above limit. 0x35 None
1 Soft start filter R The soft start filter is in use. 0x5F None
0
External flag
R
The external flag pin (FLAGIN) is set.
Programmable
Table 11. Register 0x03—Fault Register 4 and Register 0x07—Latched Fault Register 4 (1 = Fault, 0 = Normal Operation)
Bits Bit Name R/W Description Register Action
7 Volt-second balance R Volt-second balance is at its maximum or minimum limit. None
6 Modulation R Modulation is at its maximum or minimum limit. 0x2E None
5 Reserved R Reserved. None
4 Light load mode R The system is in light load mode. 0x3B None
3 Reserved R Reserved. None
2 ACSNS R The ac sense (comparator) amplitude is not correct. Programmable
1 CRC fault R The EEPROM contents downloaded are incorrect. Immediate shutdown
0 EEPROM unlocked R The EEPROM is unlocked. None
Table 12. Register 0x08 to Register 0x0D—Fault Configuration Registers
Register Name Address Bits Flag Shutdown Debounce
Fault Configuration Register 1 0x08 [7:4] CS1 fast OCP See Register 0x27 in Table 39
[3:0] CS1 accurate OCP See Register 0x0E in Table 14
Fault Configuration Register 2 0x09 [7:4] CS2 accurate OCP See Register 0x0E in Table 14
[3:0] Load OVP (VS2 or VS3) 2 ms
Fault Configuration Register 3 0x0A [7:4] Local accurate OVP (VS1)
and fast OVP (VS1)
2 ms (see Register 0x37
in Table 55)
[3:0] External flag input (FLAGIN) 10 ms
Fault Configuration Register 4 0x0B [7:4] OTP 100 ms
[3:0] UVP 10 ms
Fault Configuration Register 5 0x0C [7:4] CS2 reverse voltage 10 ms
[3:0] Voltage continuity 100 ms
Fault Configuration Register 6 0x0D [7:4] Share bus 100 ms
[3:0] ACSNS 10 ms