TOYOTA-ENGINEERING-STANDARD丰田工程标准TSC0506G-Rev-2.docx

TOYOTA ENGINEERING STANDARD
NO.:TSC0506G
TITLE: Bench test method for power voltaqe fluctuation resistance performance of automotive electric and electronic eauipment
CLASS:C1
Established:/Revised: Rsv.2 (Nov. 2020)
This standard has been revised as a result of the following changes:
(1) changes and additions have been made to the patterns applicable to the +BA power supply, which was added in step 2 of the "power supply by scene" approach (Tables 2 and 4)；
(2) waveform application timing parameters were added in the battery terminal chattering pattern (Table 4); and
(3) "Test implementation item and test waveform" was revised in the test plan description examples (Attached Table 1).
Prepared and Written by:
Electronic Performance Development &Engineering Dept.
Electronics Control System Development Div.
Design Quality Innovation Dept.
TOYOTA MOTOR CORPORATION
Bench test method for power voltaae fluctuation resistance performance of
automotive electric and electronic eauipment
1. Scope
This standard covers the method for testing on bench the resistance of automotive electric and electronic equipment (computer, actuator, and the like) to the power supply voltage fluctuation. For the items of which the detailed conditions are not specified here (test items and test waveforms to be implemented, addition/change to the test conditions, criteria, and the like), the conditions shall be determined based on the design specifications after discussion among the departments concerned.
2. Terms and Definitions
Definitions of the terms used in this standard shall conform to the following.
(1) Automotive electric and electronic equipment (hereinafter referred to as "equipment'^The term "equipment" refers to the device which controls the onboard system using semiconductor devices mainly (ECU), and various types of detection devices (sensors), electromagnetic devices (actuators), and the like which are used in combination with the ECU.
(2) Standard state
The term "standard state" refers to the atmosphieric conditions to implement the test and measurement, which shall be the normal temperature (15 to 35 °C), normal humidity (25 to 75 % RH), and normal atmospheric pressure (86 to 106 kPa). Unless otherwise specified, the test and measuremenit shall be performed in the standard state.
(3) Test specimen
The term "test specimenM refers to the equipment to be used for the test.
(4) Electrical load
The term "electrical load" refers gererically to the system component parts required for the normal operation of the test specimen. The specific structure and the operating condition of electrical load are specified in the individual standard of each unit of equipment.
(5) +B
The term "+B" refers to the power sources or signals that are input continuously from a battery to the equipment, among those input to the equipment.
(6) ACC
The term "ACC" refers to the power sources or signals that are input to the equipment through the relay contacts of ACC driven by IG switch (mechanical key type or electronic key type), among those input to the equipment. From the standpoint of the "power supply by scene" appiroach, it also refers to those driven by the multimedia system.
⑺+BA
The term "+BA" applies to functions added based on the "power supply by scene" approach, and refers to power supplies that are turned ON and OFF in accordance with the user entering or leaving the vehicle. It applies to functions driven by a semiconductor power integration in accordance with a door open/close or lock/unlock operation, or functions that are driven interlocked with ACC.
(8) IGR
The term "IGR" applies to power supplies added based on the "power supply by scene" approach and, among the conventional IG power supplies, mainly applies to power supplies connected to non-powertrain system loads. It refers to power supplies or signals that are input to the equipment through the IGR relay contacts of the IG switch (mechanical key type or electronic key type).
(9) IGP
The term "IGP" applies to power supplies added based on the "power supply by scene" approach and, among the conventional IG power supplies, mainly applies to power supplies connected to powertrain system loads. It refers to power supplies or signals that are input to the equipment through the IGP relay contacts of the IG switch (mechanical key type or electronic key type).
(10) IG
The term MIG" refers to the power sources or signals that are input to the equipment through the IG relay contacts of IG switch (mechanical key type or electronic key type), among those input to the equipment. There are 2 systems, i.e., IG1 and IG2, or IGR/and IGP.
(11) IG commonization power source
This refers to the vehicle power supply structure composed of +B, ACC, IG1, and IG2 in which the relay drive output lines of IG1 and IG2 are commonized into 1 line, In the case of IG commonization, the ON/OFF timing of IG1 and IG2 becomes simultaneous,
(12) IG non-commonization power source
This refers to the vehicle power supply structure composed of +B, ACC, IG1, and IG2 in which the relay drive output lines of IG1 and (G2 are individually provided. In the case of IG non-commonization power source,) the ON/OFF timing of IG1 and/IG2 differs.
(13) Power supply by scene
This refers to the vehicle power supply structure composed of +B, +BA, ACC, IGR, and IGP.
(14) Back up power supply
The term "back up power suppty" refers to the power supply consisting of booster circuit and capacitor to supply a stable voltage to the equipment during low power supply voltage. For example, BBC (back up boost converter) in eco-run vehicles, etc. are applicable.
(15) Push start switch input
This refers to the push switch input signal to switch over the IG switch in electronic key type vehicles.
(16) Power supply ECU
This refers to the ECU which has the function to receive the push start switch input, drive the relay of IG switch, and switch over ON and OFF of ACC and IG power supply.
(17) Universal waveform generator
The term "universal waveform generator" refers to the equipment which can generate AC voltage signals having an arbitrary frequency and waveform, and control the output waveform of a cx)nstant-voltage power supply through the connection to the constant-voltage power supply.
(18) Device for evaluating communication performance
This refers to the device which has the function to check the communication data transmitted from the test specimen and the function to transmit the communication data to the test specimen.
(19) Dark current
This refers to the current which flows to the equipment when the vehicle power supply is OFF (ACC OFF, IG OFF).
(20) Normal operation
This refers to the operation in accordance with the design intention inside and outside the operation assurance range.
(21) Malfunction
This refers to the operation different from the normal operation inside and outside the operationnssurance range.
3. Basic Knowledge regarding Power Supply Voltage Fluctuation
Power supply voltage fluctuation of the equipment is caused by following (1) to (4).
Supposed operations and scenes are shown in Table 1.
(1) Consumption of large current
(2) Operation of battery terminals
(3) Switching of power supply
(4) Dead battery
In the power supply voltage fluctuation test, determine the test conditions of the target equipment taking into consideration these fluctuation causes, operations or scenes.
Table 1 Causes and Operations or Scenes of Power Supply Voltage Fluctuation
Cause
Operation or scene
Consumption of large current
Cranking, cranking using another vehicle at relief of dead battery Activation of actuator of wiper, door lock, etc.
Operation of battery terminals
Switching of power supply
Battery replacement, looseness of battery terminal (chattering) Operating mechanical key or push start SW
Dead battery
Leaving vehicle for a long period of time, leaving vehicle power supply turned on

4. Verification of Design
4.1 Test Item
The test items specified in this standard are as shown in Table 2. Before carrying out the test, hold a discussion on the items such as operating conditions of test specimen and bench component parts and criteria among the departments concerned.
Table 2 List of Test Items
No.
Test implementation item
Waveform type (Tables 4 to 6 of Section 4.3)
1
Battery terminal connection and disconnection
Waveforms 1-1, 1-2
2
Battery terminal chattering
Waveform 2
3
Switching over of ACC, IG1, and IG2
Waveforms 3-1, 3-2, 3-3
4
Repeated turning ON/OFF of ACC and IG
Waveforms 4-1, 4-4
5
Instantaneous disconnection of ACC, IG1. and IG2
Waveform 5
6
Instantaneous disconnection of ACC and IG when IG switch is ON
Waveform 6
7
OFF and ON of IG after IG is ON
Waveform 7
8
IG ON before and after main relay is OFF
Waveforms 8-1, 8-2, 8-3
9
Cranking 1 (IG OFF—ST ON when battery is dead)
Waveforms 9-1, 9-2, 9-3, 9-4
10
Cranking 2 (IG OFF-*ACC, IG ON-*ST ON when battery is dead)
Waveforms 10-1,10-2,10-3,10-4
11
Cranking 3 (at normal start)
Waveforms 11-1,11-2,11-3,11-4
12
Cranking 4 (at relief of dead battery vehicle with HV, EV, and FCV)
Waveform 12
13
Dead battery
Waveform 13
14
ON/OFF of ACC and IG when battery is dead
Waveform 14
15
Restarting 1 from IGP OFF
Waveform 15
16
Restarting 2 from IGP OFF
Waveform 16
17
Restarting 3 from IGP OFF
Waveform 17
18
Start-up before/after +BA OFF
Waveform 18

4.2 Test Condition
The test conditions common to the test items in Section 4.1 shall conform to the following.
4.2.1 Test Environment
Shall be the standard state.
4.2.2 Test Specimen
Use equipment of which the functions have been already confirmed on bench (debugged on bench).Determine the program load conditions and load drive conditions of the test specimen, after discussion among the departments concerned.
4.2.3 Test Apparatus
The conditions of the test apparatus to be used for the test shall be as shown below.
(1) Constant-voltage power supply.
The performance of the constant-voltage power supply to be used for the test is shown in Table 3.
Table 3 Perfonpance of Constant-Voltage Power Supply
Item
Performance
Response (kHz)
10 min.
Output voltage range (V)
0 to 20 min. [0 to 30 min.]
Output current capacity
Depends on the specifications (operating current, rush current, etc.) of each unit of equipment.

Remarks:
1. [ ] shall be applied to 24 V system parts.
2. Recommendation: Bipolar power supply unit manufactured by Kikusui Electronics Co.
(PBZ20-20 or PBX20-20)
(2) Universal waveform generator
Shall have the performance of output frequency of 10 kHz min.
Remark Recommendation: Simulator (dSPACE, etc.), function generator 33120A [made by Agilent Technologies, Inc,], programmable power source meeting the output frequencyperformance, etc
(3) Ammeter
This ammeter is used for measuring dark current.Its dissolution shall be 0.1 mA min.
4.2.4 Electrical Load
The electrical loads used in operating the ECUs shall be actual loads. However, if actual loads cannot be prepared, dummy loads may be used. When dummy loads are used, the rated voltage, rated power, tolerance, impedance, and other characteristics which are judged to have effect on the power supply voltage fluctuation resistance performance shall be made equivalent to those of the actual loads. If the test specimen is provided with the communication function, connect the actual equipment to which the communication is established or the device for evaluating the communication performance (see Fig. 1). Determine the communication conditions after discussion among the departments concerned.
4.2.5 Bench Structure
An example of the bench structure (connection of test specimen, test apparatus, and loads) is shown in Fig. 1.

Fig. 1 Bench Test Structure Example
4.2.6 Tolerance
The tolerance of output voltage waveform is shown in Fig. 2. Measure the power supply input terminals of the test specimen in the structure shown in Fig. 1 using an oscilloscope or the like, and check that the waveforms are within the tolerance.

Fig. 2 Tolerance of Voltage and Fall/Rise Delay Time of Output Voltage Fluctuation Waveform
4.3 Test Method
The test waveforms specified in this standard are shown in Table 4. Select the power supply waveform to be connected! to the equipment from the power supply waveforms (+B, ACC, IG) of each test waveform in Table 4. When the power supply to be connected to the equipment is other than + B, ACC, and IG, simulate the drive state of the power supply, and determine the waveform individually.For the equipment which is connected to the back up power supply (+B, ACC, IG system) in eco-run vehicles, apply the +B, ACC, IG waveforms of each test waveform respectively. However, regarding the cranking 3 waveform, apply 2 patterns, i.e., the +B, ACC, IG waveforms of test waveform and the back up power supply waveform.
T able 4 T est Waveform
Waveform type
Waveform parameter
Test implementation
item
也囱2£01_111 Battery Battery
disconnection connection
12 V [24 V]
【•B】
<T1,T2>
Combine the folowing times (229 waveforms in total)
Test pattern 1:
Toff: Time required for the equipment to stop T1:1.0 to 15.0 s (In increments of 1.0 s) T2: 1.0 to 15.0 s (In increments of 1.0 •) Test pattern 2:
T1:100 ms
T2 10. 30. 50.100 ms
< Power supply*
Supply power according »(i) to (v) shown below
—
«)
侦）
㈣
W)
(v)
+B
O
O
O
O

♦BA
OPEN
O
O
O
o
ACC
OPEN
OPEN
O
O
o
IGR
OPEN
OPEN
OPEN
O
o
IGP
OPEN
OPEN
OPEN
OPEN
o

Combination of p^wer styply inputs

Battery terminal connection and disconnection
MYefQrm.l# Battery Battery disconnection connection
1 power supply
voltage fluctuation
waveform
一
U)
CO
㈣
(IV)
(v)

O
O
O
O

♦BA
OPEN
O
O
O
O
ACC
OPEN
OPEN
O
O
O
IGR
OPEN
OPEN
OPEN
o
O
IGP
OPEN
OPEN
OPEN
OPEN
o

ConibtnatKX) of power simply jnputs

<T1. T2. T3. T4>
Combine the folowing times (431 waveforms in total)
Test pattern 1.
Toff: Time required for the equipment to stop
T1:1.0. 5.0.10 0 s
T2: 3.0 lo 15 0 s (in increments of 1.0 s)
T3: 1000 to 1100 ms (in increments of 10
ms)
T4: 0 ms
Test pattern 2:
T1: 10.0 s
T2: 1.0, 2.0 s
T3： 0 ms
T4： 100 ms
< Power supply>
Supply power according to (i) to (v) shown below
Waveform 2
Battery terminal chattering
waveforma a
<T1.T2. T3. V1>
Combine the following times (600 waveforms in total).
T1. 10. 30. 50.100 ms
T2. 10 to 300 ms (in increments of 10 ms)
T3: 0 to 30 s (in increments of 1 s)
V1：0. 2.0. 4 0. 6.0. 8.0 V
<Power supply>
Supply power according to (i) to (iv) shown below
—
O)
(ii)
(iii)
(iv)
♦B
a
a
a
a
+BA
b
a
a
a
ACC
b
b
a
a
IGR
b
b
b
a
IGP
b
b
b
a

Combination of power supply inputs
Waveform 3-1
Switching over ACC, IGI.and IG2
<T1>
Carry out with the following times (3 waveforms in total).
T1: 5.0, 11.0.31.0 s
< Power