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Data Sheet, Rev. 3.1, Aug. 2007
TLE6251DS
High Speed CAN-Transceiver with Bus wake-up
Automotive Power
Edition 2007-08-20 Published by Infineon Technologies AG 81726 Munich, Germany
(c) 2005 Infineon Technologies AG
All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered.
High Speed CAN-Transceiver with Bus wake-up
TLE6251DS
Features * * * * * * * * * * * * * * * CAN data transmission rate up to 1 Mbaud Compatible to ISO/DIS 11898 Supports 12 V and 24 V automotive applications Low power mode with remote wake-up via CAN bus Wake signaling by RxD change No BUS load in stand-by mode Wide common mode range for electromagnetic immunity (EMI) Digital inputs compatible to 3.3 and 5 V logic devices CAN short circuit proof to ground, battery and VCC Split termination to stabilize the recessive level TxD time-out function Overtemperature protection Protected against automotive transients Green Product (RoHS compliant) AEC Qualified
Description The CAN-transceiver TLE6251DS is a monolithic integrated circuit in a PG-DSO-8 package for high speed differential mode data transmission (up to 1 Mbaud) and reception in automotive and industrial applications. It works as an interface between the CAN protocol controller and the physical bus lines compatible to ISO/DIS 11898. As a successor to the first generation of HS CAN (TLE6250), the TLE6251DS is designed to provide an excellent passive behavior when the transceiver is switched off (mixed networks, terminal 15/30 applications) and a remote wake-up capability via CAN bus in low power mode. This supports networks with partially un-powered nodes. The TLE6251DS has two operation modes, the normal and the stand-by mode. These modes can be chosen by the STB pin. If the TLE6251DS is in stand-by mode and a message on the bus is
Type TLE6251DS
Data Sheet 3
Package PG-DSO-8
Rev. 3.1, 2007-08-20
TLE6251DS
detected, the TLE6251DS changes the level at the RxD pin corresponding to the bus signal (wake-up flag). The TLE6251DS is also designed to withstand the severe conditions of automotive applications and to support 12 V and 24 V applications. The IC is based on the Smart Power Technology SPT(R) which allows bipolar and CMOS control circuitry in accordance with DMOS power devices existing on the same monolithic circuit. Pin Configuration and Definitions
T L E6251 D S
T xD GN D
1 2 3 4
8 7 6 5
AEP03389.VSD
ST B C AN H C AN L SPLIT
VCC
R xD
Figure 1 Table 1 Pin No. 1 2 3 4 5 6 7 8
Pin Configuration (top view) Pin Definitions and Functions Symbol TxD GND Function CAN transmit data input; 20 k pull-up, LOW in dominant state Ground 5 V supply input; block to GND with 100 nF ceramic capacitor CAN receive data output; LOW in dominant state Split termination output; to support the recessive voltage level of the bus lines Low line input; LOW in dominant state High line output; HIGH in dominant state Mode control input; internal pull-up, see Figure 3
VCC
RxD SPLIT CANL CANH STB
Data Sheet
4
Rev. 3.1, 2007-08-20
TLE6251DS
Functional Block Diagram
TLE6251DS
VCC
3 Wake-Up Logic Mode Control Logic 8 STB
VCC
CANH 7 Output Stage
Driver Temp.Protection + timeout =
CANL
6
1
TxD
Receiver
MUX
4
RxD
SPLIT GND
5 2
AEB03388.VSD
Figure 2
Functional Block Diagram
Data Sheet
5
Rev. 3.1, 2007-08-20
TLE6251DS
Application Information The TLE6251DS has two operation modes, the normal and the standby mode. These modes can be controlled with the STB pin (see Figure 3, Table 2). The STB pin has an implemented pullup, so if there is no signal applied to STB or STB = HIGH, the standby mode is activated. To transfer the TLE6251DS into the normal mode, STB has to be switched to LOW.
Normal STB = 0
Stand-By STB = 1
AEA03391.VSD
Figure 3 Table 2 Mode Normal Stand by
1)
Mode State Diagram Truth Table STB low high Event bus dominant bus recessive wake-up via CAN bus detected no wake-up detected RxD low high low/high1) high GND BUS Termination
VCC/2
Signal at RxD changes corresponding to the bus signal during stand by mode. See Figure 6
Normal Mode This mode is designed for the normal data transmission/reception within the HS-CAN network.
Data Sheet
6
Rev. 3.1, 2007-08-20
TLE6251DS
Transmission The signal from the C is applied to the TxD input of the TLE6251DS. Now the bus driver switches the CANH/L output stages to transfer this input signal to the CAN bus lines. TxD Time-out Feature If the TxD signal is dominant for a time t > tTxD the TxD time-out function deactivates the transmission of the signal at the bus. This is realized to prevent the bus from being blocked permanently dominant due to an error. The transmission is released again, after a rising edge at TxD has been detected. Reduced Electromagnetic Emission The bus driver has an implemented control to reduce the electromagnetic emission (EME). This is achieved by controlling the symmetry of the slope, resp. of CANH and CANL. Overtemperature The driver stages are protected against overtemperature. Exceeding the shutdown temperature results in deactivation of the driving stages at CANH/L. To avoid a bit failure after cooling down, the signals can be transmitted again only after a dominant to recessive edge at TxD. Figure 4 shows the way how the transmission stage is deactivated and activated again. First an over temperature condition causes the transmission stage to deactivate. After the over temperature condition is no longer present, the transmission is only possible after the TxD signal has changed to recessive level.
Data Sheet
7
Rev. 3.1, 2007-08-20
TLE6251DS
Failure Overtemp
VCC
Overtemperature GND TxD
t
VCC
GND
t
BUS VDIFF
(CANH-CANL)
R
D
R
t
AET03394.VSD
Figure 4 Reception
Release of the Transmission after Overtemperature
The analog CAN bus signals are converted into a digital signal at RxD via the differential input receiver. The RxD signal is switched to RxD output pin via the multiplexer (MUX), see Figure 2. In normal mode the split pin is used to stabilize the recessive common mode signal. Standby Mode The standby mode is designed to switch the TLE6251DS into a low power mode with minimum current consumption. The driving stages and the receiver are deactivated. Only the relevant circuitry to guarantee a correct handling of the CAN bus wake-up is still active. This wake-up receiver is also designed to show an excellent immunity against electromagnetic noise (EMI). Change into Standby Mode during CAN Bus Failure It is possible to change from normal mode into the standby mode if the bus is dominant due to a bus failure without setting the RxD wake flag to LOW. The advantage is, that the TLE6251DS can be kept in the standby mode even if a bus failure occurs. Figure 5 shows this mechanism in detail. During a bus network failure, the bus might be dominant. Normal communication is not possible until the failure is removed. To reduce the current consumption, it makes sense to switch over to standby mode. This is possible with the
Data Sheet 8 Rev. 3.1, 2007-08-20
TLE6251DS
TLE6251DS. If the dominant signal switches back to recessive level, e.g. failure removed, a wake-up via CAN bus (recessive to dominant signal detected) is possible.
BUS VDIFF
(CANH-CANL)
VCC
D R D
t
STB (Mode)
VCC
Normal Mode (STB = LOW) Standby Mode (STB = HIGH)
RxD
tWU1
tWU2
t
VCC
t
AET03393.VSD
Figure 5
Go-To Standby Mode during Bus Dominant Condition
Wake-up via CAN Message During standby mode, a dominant CAN message on the bus longer than the filtering time t > tWU1, leads to the activation of the wake-up. The wake-up during standby mode is signaled with the RxD output pin. A dominant signal longer t > tWU1 on the CAN bus switches the RxD level to LOW, with a following recessive signal on the CAN bus longer t > tWU2 the RxD level is switched to high, see Figure 6. The C is able to detect this change at RxD and switch the transceiver into the normal mode.
Data Sheet
9
Rev. 3.1, 2007-08-20
TLE6251DS
VCAN VCC VCC/2
CANH
CANL BUS VDIFF
(CANH-CANL)
Recessive to Dominant
t
VDIFF(d)
VDIFF(d)
VDIFF(d)
VDIFF(d)
VRxD VCC
tWU1
tWU2
0.8 x VCC 0.2 x VCC
t
GND
t
AET03395_TO1.VSD
Figure 6 Split Circuit
Wake-up behavior
The split circuitry is activated during normal mode and deactivated (SPLIT pin floating) during standby mode. The SPLIT pin is used to stabilize the recessive common mode signal in normal mode. This is realized with a stabilized voltage of 0.5 VCC at SPLIT. A correct application of the SPLIT pin is shown in Figure 7. The split termination for the left and right node is realized with two 60 resistances and one 10 nF capacitor. The center node in this example is a stub node and the recommended value for the split resistances is 1.5 k.
Data Sheet
10
Rev. 3.1, 2007-08-20
TLE6251DS
C AN H T LE6251 G/D S SPLIT 10 nF C AN L 60 Split Term ination 60 C AN Bus 60 Split T erm ination 60 10 nF
C AN H T LE6251 G/D S SPLIT
C AN L
10 nF Split Term ination at Stub 1.5 k 1.5 k
C AN H
SPLIT
C AN L
TL E6251 G/D S
AEA 03390 .VSD
Figure 7
Application of the SPLIT Pin for Normal Nodes and one Stub Node
Other Features Fail Safe If the device is supplied but there is no signal at the digital inputs, the TxD and STB have an internal pull-up path, to prevent the transceiver to switch into the normal mode or send a dominant signal on the bus. Un-supplied Node The CANH/CANL pins remain high ohmic, if the transceiver is un-supplied.
Data Sheet
11
Rev. 3.1, 2007-08-20
TLE6251DS
Table 3 Parameter Voltages Supply voltage
Absolute Maximum Ratings Symbol Limit Values Min. Max. 5.5 40 40 V V V - - CANH - CANL < |40 V| CANH - SPLIT < |40 V| CANL - SPLIT < |40 V| - 0 V < VCC < 5.5 V human body model (100 pF via 1.5 k) human body model (100 pF via 1.5 k) - Unit Remarks
CAN bus voltage (CANH, CANL) CAN bus differential voltage CANH, CANL, SPLIT Input voltage at SPLIT Logic voltages at STB, TxD, RxD Electrostatic discharge voltage at CANH, CANL, SPLIT vs. GND Electrostatic discharge voltage Temperatures Storage temperature
VCC VCANH/L VCAN diff VSPLIT VI VESD VESD
-0.3 -32 -40
-27 -0.3 -6
40
V V kV
VCC
6
-2
2
kV
Tj
-40
150
C
Note: Maximum ratings are absolute ratings; exceeding any one of these values may cause irreversible damage to the integrated circuit.
Data Sheet
12
Rev. 3.1, 2007-08-20
TLE6251DS
Table 4 Parameter Supply voltage
Operating Range Symbol Limit Values Min. Max. 5.25 150 185 190 10 V C K/W C K - -
1)
Unit
Remarks
Junction temperature Thermal Resistances Junction ambient Thermal shutdown temperature Thermal shutdown hyst.
1)
VCC Tj Rthj-a TjsD
T
4.75 -40 - 150 -
Thermal Shutdown (junction temperature) - -
Calculation of the junction temperature Tj = Tamb + P x Rthj-a
Data Sheet
13
Rev. 3.1, 2007-08-20
TLE6251DS
Table 5
Electrical Characteristics
4.75 V < VCC < 5.25 V; RL = 60 ; -40 C < Tj < 150 C; all voltages with respect to ground; positive current flowing into pin; unless otherwise specified. Parameter Current Consumption Current consumption Current consumption Current consumption Receiver Output RxD HIGH level output current LOW level output current Short circuit current Transmission Input TxD HIGH level input voltage threshold LOW level input voltage threshold TxD pull-up resistance TxD input hysteresis Stand By Input (pin STB) HIGH level input voltage threshold LOW level input voltage threshold STB pull-up resistance STB input hysteresis Symbol Limit Values Min. Typ. 6 45 20 Max. 10 70 30 mA mA A recessive state; Unit Remarks
ICC ICC ICC,stb
- - -
VTxD = VCC
dominant state;
VTxD = 0 V
stand-by mode; TxD = high
IRD,H IRD,L ISC,RxD VTD,H VTD,L RTD VTD hys VSTB,H VSTB,L RSTB VSTB hys
- - 2 - 2.0 - 10 - 2.0 - 10 -
-4 -100 4 15 - - 20 200 - - 20 200
-2 - - 20 - 0.8 40 - - 0.8 40 -
mA A mA mA V V k mV V V k mV
VRD = 0.8 x VCC
stand-by mode
VRD = 0.2 x VCC
- recessive state dominant state - - normal mode receive-only mode - -
Data Sheet
14
Rev. 3.1, 2007-08-20
TLE6251DS
Table 5
Electrical Characteristics (cont'd)
4.75 V < VCC < 5.25 V; RL = 60 ; -40 C < Tj < 150 C; all voltages with respect to ground; positive current flowing into pin; unless otherwise specified. Parameter Symbol Limit Values Min. Split Termination Output (pin SPLIT) Split output voltage Typ. 0.5 x Max. 0.7 x V normal mode; -500 A < ISPLIT < 500 A normal mode; no Load standby mode; -22 V < VSPLIT < 35 V - recessive to dominant dominant to recessive recessive to dominant dominant to recessive Unit Remarks
VSPLIT VSPLIT
0.3 x
VCC VCC
-5 - - 0.5
VCC VCC
VCC VCC
5 - 0.9 -
0.45 x 0.5 x 0 600 0.8 0.6 0.9 0.4 -12 - 10 20 2.0 -500 0.5 2.75 0.8 - 200 20 40 2.5 - - -
0.55x V A V V V V 12 - 30 60 3.0 50 2.25 4.5 V mV k k V mV V V
Leakage current SPLIT output resistance Bus Receiver Differential receiver threshold voltage, normal mode Differential receiver threshold, low power mode Common Mode Range Differential receiver hysteresis CANH, CANL input resistance Bus Transmitter CANL/CANH recessive output voltage CANH, CANL recessive output voltage difference CANL dominant output voltage CANH dominant output voltage
Data Sheet
ISPLIT RSPLIT Vdiff,rdN Vdiff,drN Vdiff,rdLP Vdiff,drLP
CMR
1.15
VCC = 5 V
- recessive state recessive state
Vdiff,hys Ri
Differential input resistance Rdiff
VCANL/H Vdiff VCANL VCANH
VTxD = VCC;
no load no load
VTxD = VCC; VTxD = 0 V; VCC = 5 V VTxD = 0 V; VCC = 5 V
Rev. 3.1, 2007-08-20
15
TLE6251DS
Table 5
Electrical Characteristics (cont'd)
4.75 V < VCC < 5.25 V; RL = 60 ; -40 C < Tj < 150 C; all voltages with respect to ground; positive current flowing into pin; unless otherwise specified. Parameter CANH, CANL dominant output voltage difference Vdiff = VCANH - VCANL Symbol Limit Values Min. Typ. - Max. 3.0 V 1.5 Unit Remarks
Vdiff
VTxD = 0 V; VCC = 5 V VCANLshort = 18 V VCANHshort = 0 V VCC = 0 V; 0 V < VCANH,L < 5 V CL = 47 pF; RL = 60 ; VCC = 5 V; CRxD = 15 pF CL = 47 pF; RL = 60 ; VCC = 5 V; CRxD = 15 pF CL = 47 pF; RL = 60 ; VCC = 5 V CL = 47 pF; RL = 60 ; VCC = 5 V CL = 47 pF; RL = 60 ; VCC = 5 V; CRxD = 15 pF CL = 47 pF; RL = 60 ; VCC = 5 V; CRxD = 15 pF tWU1 = td(L),R + tWU
see Figure 6
CANL short circuit current ICANLsc CANH short circuit current ICANHsc Leakage current
50 -200 -
80 -80 -
200 -50 -5
mA mA A
ICANH,L,lk
Dynamic CAN-Transceiver Characteristics Propagation delay TxD-to-RxD LOW (recessive to dominant) Propagation delay TxD-to-RxD HIGH (dominant to recessive)
td(L),TR
-
150
255
ns
td(H),TR
-
150
255
ns
td(L),T Propagation delay TxD LOW to bus dominant
Propagation delay td(H),T TxD HIGH to bus recessive Propagation delay td(L),R bus dominant to RxD LOW
-
50
120
ns
-
50
120
ns
-
100
135
ns
Propagation delay td(H),R bus recessive to RxD HIGH
-
100
135
ns
Min. dominant time for bus tWU1 wake-up signal (RxD high to low)
Data Sheet
0.75
3
5
s
16
Rev. 3.1, 2007-08-20
TLE6251DS
Table 5
Electrical Characteristics (cont'd)
4.75 V < VCC < 5.25 V; RL = 60 ; -40 C < Tj < 150 C; all voltages with respect to ground; positive current flowing into pin; unless otherwise specified. Parameter Symbol Limit Values Min. Min. recessive time for bus tWU2 wake-up signal (RxD low to high) TxD permanent dominant disable time 0.75 Typ. 3 Max. 5 s Unit Remarks
tWU2 = td(H),R + tWU
see Figure 6 -
tTxD
0.3
-
1.0
ms
Data Sheet
17
Rev. 3.1, 2007-08-20
TLE6251DS
Diagrams
STB 7 CANH TxD SPLIT 47 pF 60 RxD 6 CANL GND 2
VCC
8 1 5
4 15 pF 3 5V 100 nF
AEA03392.VSD
Figure 8
Test Circuits for Dynamic Characteristics
Data Sheet
18
Rev. 3.1, 2007-08-20
TLE6251DS
VTxD V C
GND
VDIFF
td(L), T
td(H), T
t
VDIFF(d) VDIFF(r) VRxD VC
0.8VC 0.2VC GND
td(L), R
td(H), R
t
td(L), TR
td(H), TR
t
AET02926
Figure 9
Timing Diagrams for Dynamic Characteristics
Data Sheet
19
Rev. 3.1, 2007-08-20
TLE6251DS
Application
4 .7 nF 60 V Bat 60
1)
VS
TL E6251 G 9 WK EN N ST B 51 H
1)
10 k
6 14 8 4 1 5 100 nF 3 100 nF GN D 100 nF P w ith On C hip C AN M odule e.g . C164 C C167 C
C AN Bus 13 12 11 10
N ER R C AN H C AN L SPLIT R xD T xD
V C
VS
GN D 2 IN H
100 7 IN H nF
VCC
VQ 1
e.g. T LE 4476 (3.3/5 V) or TLE 4471 TLE 4276 TLE 4271 22 + F 100 nF
VI
GN D
VQ 2
5V + 22 F + 22 F EC U
51 H
1)
TL E6251 D S 7 6 5 C AN H C AN L SPLIT GN D 2 e. g. T LE 4270 ST B R xD T xD 8 4 1 3 100 nF 100 nF P w ith On C hip C AN M odule e.g . C164 C C167 C GN D
V CC
60
60 4.7 nF
1)
VI
22 + F 100 nF GN D
VQ
+
5V 22 F EC U
AEA 03387 .VSD
1) Optional, according to the car m anufacturer requirem ents
Figure 10
Data Sheet
Application Circuit
20 Rev. 3.1, 2007-08-20
TLE6251DS
Package Outlines
0.35 x 45 4 -0.2 1) C
1.75 MAX.
0.175 0.07 (1.45)
0.19 +0.06
6 0.2
1.27 0.41+0.1 2) -0.06 0.2
M
0.1 A B 8x
B
0.64 0.25 0.2
M
8 MAX.
C 8x
GPS01181
8
5
1
4
5 -0.2 1) Index Marking
A
1) Does not include plastic or metal protrusion of 0.15 max. per side 2) Lead width can be 0.61 max. in dambar area
Figure 11
PG-DSO-8 (PG-DSO-8-16 Plastic Dual Small Outline)
Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
You can find all of our packages, sorts of packing and others in our Infineon Internet Page "Products": http://www.infineon.com/products. SMD = Surface Mounted Device Data Sheet 21 Dimensions in mm Rev. 3.1, 2007-08-20
TLE6251DS
Revision History
Version Rev. 3.1
Date
Changes * * All pages: Infineon logo updated Page 3: "added AEC qualified" and "RoHS" logo, "Green Product (RoHS compliant)" and "AEC qualified" statement added to feature list, package name changed to RoHS compliant versions, package picture updated, ordering code removed Page 21: Change package drawing to GPS01181 Package name changed to RoHS compliant versions, "Green Product" description added added Revision History updated Legal Disclaimer
2007-08-20 RoHS-compliant version of the TLE6251DS
*
* *
Data Sheet
22
Rev. 3.1, 2007-08-20

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