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TPS26600-02EVM
User Manual
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Texas Instruments TPS26600-02EVM User Manual

User's Guide
SLVUAV3A–August 2016–Revised February 2017

TPS26600-02EVM: Evaluation Module for TPS2660x

NOTE: The TPS26602 can be evaluated on this EVM by replacing the TPS26600PWP (U1) or
TPS26600RHF (U2) with the TPS26602PWP or TPS26602RHF, on respective channels. Instructions for evaluation are listed in Section 4.4.7. The TPS26601 can be evaluated on this EVM by replacing the TPS26600RHF (U2) with the TPS26601RHF. Instructions for evaluation are listed in Section 4.4.8.
Contents
1 Introduction ................................................................................................................... 2
2 Description.................................................................................................................... 2
3 Schematics ................................................................................................................... 3
4 General Configurations ..................................................................................................... 4
5 EVM Board Assembly Drawings and Layout Guidelines ............................................................. 14
6 Bill Of Materials (BOM).................................................................................................... 16
List of Figures
1 TPS26600-02EVM Schematic ............................................................................................. 3
2 EVM Test Setup ............................................................................................................. 6
3 Output Voltage Start-Up Waveform ...................................................................................... 8
4 J5/J12 = 2-3 Position, Current Limit (2.23 A), Auto-Retry Mode..................................................... 10
5 J5/J12 = 1-2 Position, Current Limit (2.23 A), Latch-Off Mode ...................................................... 10
6 Restart From Latch-Off Mode ............................................................................................ 11
7 J5/J12 = Floating, Current Limit (2.23 A), Circuit Breaker With Auto-Retry Mode ................................ 11
8 Output Short-Circuit Protection........................................................................................... 12
9 Reverse Polarity Protection............................................................................................... 13
10 Top Side Placement ....................................................................................................... 14
11 Top Layer ................................................................................................................... 14
12 Bottom Layer................................................................................................................ 15
List of Tables
1 TPS26600-02EVM Options and Setting .................................................................................. 2
2 Input and Output Connector Functionality................................................................................ 4
3 Test Points Description ..................................................................................................... 4
4 Jumper and LED Descriptions ............................................................................................. 4
5 Power Supply Setting for the TPS26600-02EVM........................................................................ 7
6 Default Jumper Setting for the TPS26600-02EVM...................................................................... 7
7 TPS26600-02EVM DMM Readings at Different Test Points........................................................... 7
8 TPS26600-02EVM Oscilloscope Setting for the Output Voltage Start-Up Test ..................................... 8
9 TPS26600-02EVM Oscilloscope Setting for the Current Limit Test .................................................. 9
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TPS26600-02EVM: Evaluation Module for TPS2660x
1
Introduction
10 TPS26600-02EVM Jumper Setting for Current Limits .................................................................. 9
11 TPS26600-02EVM Output Short-Circuit Protection Test ............................................................. 12
12 TPS26600-02EVM Reverse Polarity Test .............................................................................. 13
13 TPS26600-02EVM Bill of Materials...................................................................................... 16
Trademarks
All trademarks are the property of their respective owners.

1 Introduction

The TPS26600-02EVM allows reference circuit evaluation of TI's TPS2660x devices. The TPS2660x are compact 4.2-V to 55-V, 2.23-A industrial eFuses with integrated back-to-back FETs, programmable undervoltage, overvoltage, reverse-polarity, overcurrent, inrush current protection, and output current monitoring features.

1.1 EVM Features

The TPS26600-02EVM features include:
• 4.2-V to 55-V input operating voltage range
• 0.2-A to 2.23-A jumper-programmable current limit
• Reverse polarity protection up to –55 V
• Programmable input UVLO
• Selectable overload fault response (auto-retry, latch and circuit breaker)
• Programmable input overvoltage protection (OVP) cut off
• Programmable V
• Load current monitor output with 1.5 V / A
• Optional on-board transient protection devices like input TVS and output Schottky diodes
• On-board reset switch and fault indicators
slew rate control
OUT
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1.2 EVM Applications

• Control and automation
• PLCs
• Industrial power systems
• Sensors and controls

2 Description

The TPS26600-02EVM enables full evaluation of the TPS2660x devices. The EVM supports HTSOP and QFN versions of the devices on two channels (CH1 and CH2, respectively). Input power is applied at T1 (CH1) and T3 (CH2) while T2 (CH1) and T4 (CH2) provide an output connection to the load. Refer to the schematic in Figure 1 and the test setup in Figure 2.
S1 and S2 allows U1 and U2 to RESET. A fault (FLTb) indicator is provided by D1 and D7 for CH1 and CH2, respectively. Scaled current for each can channel be monitored at TP5 and TP14 with a scaling factor of 1.5 V / A.
Table 1. TPS26600-02EVM Options and Setting
Part Number EVM Function VINRange
TPS26600-02EVM
(1)
Minimum programmable current limit can be changed to 0.1 A by changing the R12 and R24 values to 120 kΩ on CH1 and CH2 respectively.
4.2-V to 55-V,
2.23-A Industrial eFuse
4.2 V–55 V 10 V 15 V 40 V 33 V 0.2 A
UVLO OVP Current Limit
CH1 CH2 CH1 CH2
Minimum
Setting
Maximum
Setting
(1)
2.23 A
Selectable Fault
Response
Auto retry
Latch off
Circuit Breaker
2
TPS26600-02EVM: Evaluation Module for TPS2660x
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1234567
8
J5
TP1 FLTb1
VOUT1=4.2V-55V
IOUT1=0.2A -2.23A
Red
D1
D5
T2
VOUT1
T1
VIN1
8.06k
R10
5.36k
R9
J2
24.3k
R1
Green
D6
24.3k
R5
VIN1=4.2V to 55V
IIN1=0.2A-2.23A
47µF
C5
IN
1
IN
2
UVLO
3
NC
4
OVP
5
MODE
6
SHDN
7
RTN
8
GND
9
IMON
10
ILIM
11
DVDT
12
NC
13
FLT
14
OUT
15
OUT
16
PAD
17
U1
TPS26600PWPR
887k
R2
30.1k
R8
1µF
C2
0.1µF
C1
DNP
S1
1 2 3
J4
0.022µF
C6
20.0k
R6
90.9k
R3
402k
R7
J1
GND
TP5 IMON1
TP7 GND
TP2 VIN1
TP3 VOUT1
TP4 SHDNb1
51V
D4
1µF
C3
12.1k
R11
60.4k
R12
RTN1
1 2
J3
51V
D2
DNP
36V
D3
DNP
TP8 GND
TP9 GND
1µF
C4
DNP
Vin1 Vout1
1234567
8
J12
TP10 FLTb2
VOUT2=4.2V-55V
IOUT2=0.2A-2.23A
Red
D7
D11
T4
VOUT2
T3
VIN2
8.06k
R22
5.36k
R21
J9
24.3k
R13
Green
D12
24.3k
R16
VIN2=4.2V to 55V
IIN2=0.2A-2.23A
47µF
C9
887k
R14
30.1k
R20
1µF
C8
0.1µF
C7
DNP
S2
1 2 3
J11
0.022µF
C12
20.0k
R18
90.9k
R15
402k
R19
J8
GND
TP14 IMON2
TP16 GND
TP11 VIN2
TP12 VOUT2
TP13 SHDNb2
51V
D10
1µF
C10
12.1k
R23
60.4k
R24
RTN2
1 2
J10
51V
D8
DNP
36V
D9
DNP
TP17 GND
TP18 GND
1µF
C11
DNP
Vout1
Vout1Vin1
Vin1
Vin2
Vin2
Vin2
Vout2
Vout2
Vout2
J6
J7
J13
J14
DVDT
20
GND
17
ILIM
19
IMON
18
IN
8
IN
9
MODE
13
NC
1
NC
2
NC
11
NC
3
NC
16
NC
4
NC
5
NC
6
NC
7
NC
21
OUT
23
OUT
24
OVP
12
PAD
25
RTN
15
UVLO
10
FLT
22
SHDN
14
U2
TPS26600RHF
100k
R4
100k
R17
Copyright © 2017, Texas Instruments Incorporated
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3 Schematics

Figure 1 illustrates the EVM schematic.
Schematics
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Figure 1. TPS26600-02EVM Schematic
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TPS26600-02EVM: Evaluation Module for TPS2660x
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General Configurations

4 General Configurations

4.1 Physical Access

Table 2 lists the TPS26600-02EVM input and output connector functionality, Table 3 describes the test
point availability, and Table 4 describes the jumper functionality.
Table 2. Input and Output Connector Functionality
Connector Label Description
T1 CH1 VIN1(+), GND(–) CH1 input power supply to the EVM T2 VOUT1(+), GND(–) CH1 output from the EVM T3 CH2 VIN2(+), GND(–) CH2 input power supply to the EVM T4 VOUT2(+), GND(–) CH2 output from the EVM
Channel Test Points Label Description
CH1 TP1 FLTb1 CH1 fault indicator
TP2 VIN1 CH1 power supply input TP3 VOUT1 CH1 output voltage TP4 SHDNb1 CH1 shutdown input TP5 IMON1 CH1 output current monitor
TP7, TP8, TP9 GND GND
CH2 TP10 FLTb2 CH2 fault indicator
TP11 VIN2 CH2 power supply input TP12 VOUT2 CH2 output voltage TP13 SHDNb2 CH2 shutdown input TP14 IMON2 CH2 output current monitor
TP16, TP17, TP18 GND GND
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Table 3. Test Points Description
Jumper Label Description
J1 J1 CH1 fault LED pulled to VIN1, if installed J2 J2 CH1 output power indicator LED pulled to VOUT1, if installed J3 J3 CH1 bulk output capacitor connects to VOUT1, if installed J4 MODE CH1 MODE selection
J5 ILIM CH1 current limit setting
J6 UVLO CH1 UVLO setting
J7 OVP CH1 OVP setting
J8 J8 CH2 fault LED pulled to VIN2, if installed J9 J9 CH2 output power indicator LED pulled to VOUT2, if installed
J10 J10 CH2 bulk output capacitor connects to VOUT1, if installed
4
TPS26600-02EVM: Evaluation Module for TPS2660x
Table 4. Jumper and LED Descriptions
spac1-2 position sets latch-off mode spac2-3 position sets auto-retry mode spacOpen position sets circuit breaker with auto-retry mode
spac1-2 position sets 2.23 A spac3-4 position sets 1.5 A spac5-6 position sets 1 A spac7-8 position sets 0.2 A
spacSets internal UVLO (15 V), if installed
spacSets internal OVP (33 V), if installed
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Jumper Label Description
J11 MODE CH2 MODE selection
J12 ILIM CH2 current limit setting
J13 UVLO CH2 UVLO setting
J14 OVP CH2 OVP setting
D1, D7 (RED-
LED)
D6, D12
(GREEN-LED)
Output power

4.2 Test Equipment

4.2.1 Power Supplies
One adjustable power supply: 0-V to 60-V output, 0-A to 3-A output current limit.
General Configurations
Table 4. Jumper and LED Descriptions (continued)
spac1-2 position sets latch-off mode spac2-3 position sets auto-retry mode spacOpen position sets circuit breaker with auto-retry mode
spac1-2 position sets 2.23 A spac3-4 position sets 1.5 A spac5-6 position sets 1 A spac7-8 position sets 0.2A
spacSets internal UVLO (15 V), if installed
spacSets internal OVP (33 V), if installed
Fault LED CH1, CH2 fault indicators, respectively. LED turns on when the internal MOSFET is disabled
indicator
due to any fault condition such as undervoltage, overvoltage, overload, short circuit, reverse current, and thermal shutdown.
CH1, CH2 output power indicators, respectively. LED turns on whenever the output voltage is available.
4.2.2 Meters
One DMM minimum needed and may require more if simultaneous measurements are required.
4.2.3 Oscilloscope
A DPO2024, or equivalent. Three 10x voltage probes and one DC current probe.
4.2.4 Loads
One resistive load which can tolerate up to 3-A DC load at 24 V.
NOTE: A resistive load is recommended for testing. If an electronic load is used, ensure that the
output load is set in the constant resistance (CR) mode, not in the constant current (CC) mode.
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TPS26600-02EVM: Evaluation Module for TPS2660x
5
Voltmeter
PRINT HELP
ALPHA
SHIFT
ENTER RUN
DGERF
I
AJBKC
L
7M8N9
O
DGDGD
G
D
G T3U
0V.WX
Y
Z
TAB
% UTILIZATION
HUB/MAU NIC
2
BNC 4Mb/s
LOAD
í
+
Power
Supply
­+
Power
Supply
­+
LOAD
+
Voltmeter
PRINT HELP
ALPHA
SHIFT
ENTER RUN
DGERF
I
AJBKC
L
7M8N9
O
DGDGD
G
D
G T3U
0V.WX
Y
Z
TAB
% UTILIZATION
HUB/MAU NIC
2
BNC 4Mb/s
Oscilloscope
í
General Configurations

4.3 Test Setup

Figure 2 shows the typical test setup for the TPS26600-02EVM. Connect T1/T3 to the power supply and
T2/T4 to the load.
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Figure 2. EVM Test Setup
6
TPS26600-02EVM: Evaluation Module for TPS2660x
Copyright © 2016–2017, Texas Instruments Incorporated
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4.4 Test Procedure

NOTE: CH1 and CH2 can be tested one by one with a single power supply and the load.
4.4.1 Preliminary Tests
1. Turn on the power supply and set the output voltage and the current limit according to Table 5.
General Configurations
Table 5. Power Supply Setting for the TPS26600-02EVM
EVM Channel Voltage Set Point Power Supply Current
TPS26600-02EVM CH1 24 V 3 A
CH2 24 V 3 A
Limit
2. Turn on the load and set the load resistance to 16 Ω ±1 Ω.
3. Disable the power supply, load and hook up the TPS26600-02EVM assembly as shown in Figure 2
4. Make sure the default evaluation board jumper settings are as shown in Table 6.
Table 6. Default Jumper Setting for the TPS26600-02EVM
J1 J2 J3 J4 J5 J6 J7
CH1 Install Install Do not
populate
J8 J9 J10 J11 J12 J13 J14
CH2 Install Install Do not
populate
2-3 1-2 Do not
populate
2-3 1-2 Install Install
Do not
populate
5. Enable the power supply and the load.
6. Connect the negative probe of the DMM to TP7 or TP18 test points, the positive probe to the respective test points, and verify that the voltages shown in Table 7 are obtained.
Table 7. TPS26600-02EVM DMM Readings at Different Test Points
Voltage test on (CH1) Measured Voltage Reading Voltage test on (CH2) Measured Voltage Reading
VIN1 (TP2) 24 V ±1 V DC VIN2 (TP11) 24 V ±1 V DC VOUT1 (TP3) 24 V ±1 V DC VOUT2 (TP12) 24 V ±1 V DC IMON1 (TP5) 2.3 V ±0.2 V DC IMON2 (TP14) 2.3 V ±0.2 V DC
FLTb1 (TP1) 22.6 V ±0.5 V DC FLTb2 (TP10) 22.6 V ±0.5 V DC
SHDNb1 (TP4) 2.7 V ±0.5 V DC SHDNb2 (TP13) 2.7 V ±0.5 V DC
7. Press the CH1/CH2 shutdown switch S1/S2 and verify the CH1/CH2 output voltage VOUT1/VOUT2 drops to zero. Release the S1/S2 switch and verify the output voltage resumes to nominal 24 V ±1 V.
8. Disable the power supply and the load.
4.4.2 UVLO, OVP Tests
Follow the instructions to verify undervoltage and overvoltage levels of the device:
1. Set the load resistance to 24 Ω ±1 Ω and the power supply voltage to 24 V. Enable the power supply and the load.
2. Increase the CH1 input voltage (VIN1) and monitor the output voltage (VOUT1). Verify that VOUT1 increases as VN1 increases and drops to zero when VIN1 exceeds 40 V ±1 V (CH1 OVP limit).
3. Reduce the CH1 input voltage and verify that the output turns on at 36 V ±1 V.
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General Configurations
4. Further reduce the CH1 input voltage and verify that VOUT1 reduces as VN1 reduces and drops to
zero when VIN1 falls below 9 V ±0.5 V (CH1 UVLO limit).
5. Increase the CH2 input voltage (VIN2) and monitor the output voltage (VOUT2). Verify that VOUT2 increases as VN2 increases and drops to zero when VIN2 exceeds 33 V ±1 V (CH2 OVP limit).
6. Reduce the CH2 input voltage and verify that the output turns on at 30 V ±1 V.
7. Further reduce the CH2 input voltage and verify that VOUT2 reduces as VN2 reduces and drops to zero when VIN2 falls below 14 V ±0.5 V (CH2 UVLO limit).
8. Verify that CH1 and CH2 FLTb red LEDs (D1/D7) turn on whenever the supply voltage reaches either OVP or UVLO limits of the respective channels.
9. Disable the power supply and the load.
4.4.3 Output Voltage Start-Up Time Test
Follow the instructions to verify the individual channels output voltage start-up time:
1. Set up the oscilloscope as listed in Table 8.
2. Set the load resistance to 16 Ω ±1 Ω and the power supply voltage to 24 V.
3. Enable the load.
4. Enable the power supply and verify that the output voltage startup waveform is as shown in Figure 3.
Table 8. TPS26600-02EVM Oscilloscope Setting for the Output Voltage Start-Up Test
Oscilloscope Setting CH1 Probe Points CH2 Probe Points
Channel 1 = 10 V / div VOUT1 (TP3) VOUT2 (TP12) Channel 2 = 10 V / div VIN1 (TP2) VIN2 (TP11) Channel 3 = 20 V / div FLTb1 (TP1) FLTb2 (TP10) Channel 4 = 1 A / div Input current into T1 +Ve wire Input current into T3 +Ve wire Trigger source = Channel 1 Trigger level = 12 V ±1 V Trigger polarity = Rising Trigger mode = Single Time base 2 ms / div
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Figure 3. Output Voltage Start-Up Waveform
8
TPS26600-02EVM: Evaluation Module for TPS2660x
Copyright © 2016–2017, Texas Instruments Incorporated
SLVUAV3A–August 2016–Revised February 2017
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