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| 型號： | TLE8242-2 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP64 |
| 封裝： | GREEN, PLASTIC, LQFP-144 |
| 文件頁數(shù)： | 17/78頁 |
| 文件大小： | 1589K |
| 代理商： | TLE8242-2 |
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TLE8242-2
Functional Description and Electrical Characteristics
Data Sheet
24
Rev. 1.0, 2010-02-09
Figure 11
Open - On
5.3.2
Off-State Diagnostics
The off-state diagnostics function in both constant current mode and in direct PWM mode.
When the OUTx pin transitions low, the fault timers are cleared to 0 and the tested timer starts to count up. If the
tested timer expires, the Bit OFF-T in the Diagnostic register is set. If a SPI diagnostic register read occurs, the
tested timer is cleared to 0 and starts again to count up. If the OUTx pin transitions high, the tested-timer is cleared
to zero and then used for on-state diagnostics.
If the analog OL fault signal (OL-FA) changes to 1, the fault filter timer starts to count up. If the fault filter timer
expires, the digitally filtered OL fault signal (OL-ON-FD) is set to one.
If OL-FA changes to 0, OL-FD changes immediately to 0 and the fault filter timer is cleared to 0.
If the analog SG fault signal (SG-FA) changes to 1, the fault filter timer is cleared to 0 and starts to count up. If the
fault filter timer expires, the digitally filtered SG fault signal (SG-FD) is set to one. If SG-FA changes to 0, SG-FD
changes immediately to 0 and the fault filter timer is cleared to 0.
If SG-FD = 1 and the tested timer is expired then the SG-F bit in the FAULT register is set and the OL-OFF-F bit
in the FAULT register remains unchanged (independently from OL-OFF-FD).
If SG-FD = 0 and OL-OFF-FD = 1 then the OL-F Bit in the FAULT register is set.
If a SPI fault read occurs, the OFF-T Bit, the SG-F Bit and the OL-F Bit in the SPI registers are cleared to zero
(and the timers are cleared to 0).
PWM_Start
OUTx
VPOS
OL-ON-F
SPI
DIAGNOSTIC
READ
64 * PWM period
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