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參數(shù)資料
| 型號(hào)： | TJA1054 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | CAN |
| 英文描述： | Fault-tolerant CAN transceiver(容錯(cuò)CAN收發(fā)器) |
| 中文描述： | 容錯(cuò)CAN收發(fā)器（容錯(cuò)的CAN收發(fā)器） |
| 文件頁(yè)數(shù)： | 16/16頁(yè) |
| 文件大?。?/td> | 75K |
| 代理商： | TJA1054 |
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Philips Semiconductors
APPLICATION HINTS
Systems Laboratory Hamburg, Germany
Fault-tolerant CAN transceiver
V2.0
Page 16 of 16
4.3.6. Maximum peak power dissipation
A peak current will flow in case of short circuits of CANH to VBAT. After the device specific detection
time, the bus failure detector will switch off the bias on RTH. Thus this peak current does only flow for
a short time.
P
peak
= V
BAT2
/ R
T
( t < t
det_HBAT
)
(13)
4.3.7. Example calculation, maximum peak power dissipation
Item
Symbol
PCA82C252
TJA1053
TJA1054
Maximum Failure Detection Time, CANH
shorted to VBAT
t
det_HBAT
60 us
60 us
8 ms
Assumptions :
R
T
= 1000 Ohms, V
BAT
= 27V
PCA82C252
:
P
peak
= (27 V)
2
/ 1000 Ohms =
730 mW
for less than
60 us
P
peak
= (27 V)
2
/ 1000 Ohms =
730 mW
for less than
60 us
P
peak
= (27 V)
2
/ 1000 Ohms =
730 mW
for less than
8 ms
(Ex 13.1)
TJA1053
:
(Ex 13.2)
TJA1054
:
(Ex 13.3)
Because this peak current does flow for a very short time only, it typically has no relevance for
dimensioning the termination resistors. Most important is the average power dissipation for the
TJA1054 (23,7 mW) and the maximum continuous power dissipation for the TJA1053 / PCA82C252
(64 mW) since these are the worst case conditions for the corresponding devices.
5. ESD Protection Circuit Concept
The purpose of the presented circuit approach is to limit the peak voltages being present at the IC pins
CANH and CANL of the fault-tolerant CAN transceiver when a CAN bus line is being subjected to ESD
pulses.
L1 = up to 70 uH, e.g. ACT3225 or ACT4532 (TDK) or B82790-S0513-N201 (Siemens) or equiv.
D1 = D2 = D3 : stand-off voltage > max. bus line DC voltage, e.g. BZG04-27 or equiv. for bus line
voltages < +27V
C1 = C2 = 100 pF to 330 pF
(*) Note: minimize inductance & length of C1 and C2 leads
CANH
CANL
GND
13
12
11
Common-mode coil
PCA82C252/
TJA1053/
TJA1054
D1
D2
L1
CAN Bus
C2
C1
D3
(*)
(*)
(*)
9
8
RTH
RTL
R
T
R
T
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TJA1054_1008 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Fault-tolerant CAN transceiver |
| TJA1054A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Fault-tolerant CAN transceiver |
| TJA1054AT | 制造商:NXP Semiconductors 功能描述:TRANSCEIVER CAN FAULT TOL SO-14 制造商:NXP Semiconductors 功能描述:TRANSCEIVER, CAN FAULT TOL, SO-14 制造商:NXP Semiconductors 功能描述:Fault-tolerant CAN transceiver,TJA1054AT |
| TJA1054AT,512 | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC HI SPD CAN TRANSCVR RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| TJA1054AT,518 | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC CAN XCVR FAULT-TOL RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
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