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參數(shù)資料
| 型號： | MAX5954LETX+T |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 18/22頁 |
| 文件大?。?/td> | 1027K |
| 描述： | IC PCI EXP/HOT-PLUG CTRLR 36TQFN |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 類型： | 熱交換控制器 |
| 應用： | 通用型，PCI Express? |
| 內部開關： | 無 |
| 電源電壓： | 3.3V，12V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 36-WFQFN 裸露焊盤 |
| 供應商設備封裝： | 36-TQFN 裸露焊盤（6x6） |
| 包裝： | 帶卷 (TR) |
Single PCI Express, Hot-Plug
Controller
18 ______________________________________________________________________________________
N
Y
POWER-ON MAIN
SUPPLIES FAULT
AND PWRGD ARE
HIGH IMPEDANCE
N
ENABLE CHARGE ON
12G AND 3.3G
PINS. START
COUNTING tSU
HAS t
SU
ELAPSED?
N
POWER-ON AUXILIARY
SUPPLIES FAULT
AND PWRGD ARE
HIGH IMPEDANCE
N
ENABLE CHARGE ON
INTERNAL AUXILIARY
MOSFET, BEGIN
COUNTING t
SU
HAS tSU ELAPSED?
N
Y
N
Y
Y
ARE PWRGD
THRESHOLDS
REACHED?
ASSERT
PWRGD
AFTER t
POR_HL
DELAY
12V AND 3.3V
OUTPUTS
ARE ENABLED
WAS CURRENT
LIMIT DETECTED ON ANY
12V OR
3.3V OUTPUT?
START COUNTING
t
FAULT
HAS t
FAULT
ELAPSED?
N
Y
RESET t
FAULT
COUNTER
Y
SHUT DOWN
12V AND 3.3V OUTPUTS.
ASSERT FAULT
STAY WAITING FOR
t
RESTART
LATCH-OFF
OPTION?
Y
STAY WAITING FOR
ON_ TRANSITION
HIGH->LOW->HIGH
AUX SUPPLY OUTPUT
IS ENABLED
WAS CURRENT LIMIT
DETECTED ON AUXILIARY
OUTPUT?
IS tFAULT
ELAPSED?
N
N
Y
Y
SHUT DOWN
ALL OUTPUTS,
ASSERT FAULT,
STAY WAITING FOR
tRESTART ELAPSED.
LATCH-OFF
OPTION?
Y
RESET FAULT
AND
RESTART ALL SUPPLIES
STAY WAITING FOR BOTH
ON AND AUXON
TRANSITION
HIGH->LOW->HIGH
RESET FAULT
AND
RESTART 12V, 3.3V
SUPPLIES
IS FAULT STILL
PRESENT?
Y
N
IS FAULT STILL
PRESENT?
N
START COUNTING
tFAULT
RESET t
FAULT
COUNTER
RESET
PWRGD
AFTER t
POR_LH
DELAY
3.3AUXIN IS ON
AND ABOVE UVLO
Figure 6. Fault Management Flow Chart
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