User's Guide
SLVU951–August 2013
TPS22967EVM-023 Single 4A Load Switch
The TPS22967EVM-023 evaluation module contains a single channel, ultra low ON resistance, 4-A load
switch with controlled turn-on and adjustable rise time
Contents
1 Description ................................................................................................................... 2
1.1 Typical Applications ................................................................................................ 2
1.2 Features ............................................................................................................. 2
2 Electrical Performance Specifications .................................................................................... 3
3 Schematic .................................................................................................................... 4
4 List of Test Points ........................................................................................................... 4
5 Layout ........................................................................................................................ 5
5.1 Typical Test Setups ................................................................................................ 8
5.2 Test Setup Equipment List ........................................................................................ 9
5.3 Test Procedure (Standalone Setup) ........................................................................... 10
5.4 R
5.5 Trise/Ton Tfall/Toff Test Procedure ............................................................................ 10
6 Performance Data and Typical Characteristic Curves ................................................................ 10
6.1 Trise/Tfall Curves ................................................................................................. 11
7 Bill of Materials ............................................................................................................. 13
Test Procedure .............................................................................................. 10
ON
List of Figures
1 TPS22967EVM-023 Schematic........................................................................................... 4
2 TPS22967EVM-023 Top Assembly....................................................................................... 5
3 TPS22967EVM-023 Topside.............................................................................................. 6
4 TPS22967EVM-023 Bottomside .......................................................................................... 7
5 TPS22967EVM-023 Recommended Ron Test Set Up ................................................................ 8
6 TPS22967EVM-023 Recommended Rise Time Test Set Up ......................................................... 9
7 TPS22967EVM-023 Trise/Ton VIN=5V VBIAS=5V ct=1nF Load =10Ω............................................ 11
8 TPS22967EVM-023 Tfall/Toff VIN=5V VBIAS=5V ct=1nF Load =10Ω............................................. 12
List of Tables
1 The Functions of Each Test Points....................................................................................... 4
2 EVM Components List.................................................................................................... 13
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Description
1 Description
The TPS22967 is a small, ultra-low ON-resistance (RON) single channel load switch with controlled turn on.
The device contains a low Rds
V to 5.5 V and can support a maximum continuous current of up to 4-A. The switch is controlled by an
active high on/off input (ON), which is capable of interfacing directly with low-voltage GPIO control signals.
In the TPS22967, a 225-Ω on-chip load resistor is added for quick output discharge (QOD). When the
switch is turned off, the output of the switch is discharged to ground through the 225-Ω load resistor. The
rise time of the device is internally controlled in order to avoid in-rush current and can be adjusted using
an external ceramic capacitor on the CT pin.
The TPS22967 is available in a small, space-saving 2mm x 2mm 8-pin SON package with integrated
thermal pad allowing for high power dissipation.
1.1 Typical Applications
• Ultrabooks™
• Notebooks/Netbooks
• Tablet PC
• Consumer Electronics
• Set-top Boxes/Residential Gateways
• Industrial Systems
• Telecom Systems
• Solid State Drivers (SSD)
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N-channel MOSFET that can operate over an input voltage range of 0.8
(ON)
1.2 Features
• Integrated single channel load switch
• Input voltage range: 0.8V to 5.5V
• Ultra-low on-resistance (22 mΩ typical)
• 4A maximum continuous switch current
• Low threshold control input
• Adjustable slew-rate control
• Quick Output Discharge transistor
• SON 8-pin package with thermal pad
2
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2 Electrical Performance Specifications
ELECTRICAL CHARACTERISTICS
Unless otherwise noted, the specification in the following table applies over the operating ambient
temperature –40°C ≤ TA≤ 85°C (Full) and V
Electrical Performance Specifications
= 5.0 V. Typical values are for TA= 25°C.
BIAS
PARAMETER TEST CONDITIONS T
POWER SUPPLIES AND CURRENTS
I
IN(VBIAS-ON)
I
IN(VBIAS-OFF)
I
IN(VIN-OFF)
I
ON
V
quiescent current I
BIAS
V
shutdown current VON= GND, V
BIAS
VINoff-state supply current VON= GND, V
ON pin input leakage current VON= 5.5 V Full 0.5 µA
RESISTANCE CHARACTERISTICS
R
ON
R
PD
ON-state resistance
Output pulldown resistance VIN= 5.0 V, VON= 0 V, I
= 0, VIN= VON= V
OUT
I
= –200 mA,
OUT
V
= 5.0 V
BIAS
MIN TYP MAX UNIT
A
= 5.0 V Full 50 75 µA
BIAS
= 0 V Full 2 µA
OUT
VIN= 5.0 V 0.2
= 0 V Full µA
OUT
VIN= 3.3 V 0.02
VIN=1.8 V 0.01
VIN= 0.8 V 0.005
VIN= 5.0 V mΩ
VIN= 3.3 V mΩ
VIN= 1.8 V mΩ
VIN= 1.5 V mΩ
VIN= 1.2 V mΩ
VIN= 0.8 V mΩ
= 15 mA Full 225 300 Ω
OUT
25°C 22 33
Full 35
25°C 22 33
Full 35
25°C 22 33
Full 35
25°C 22 33
Full 35
25°C 22 33
Full 35
25°C 22 33
Full 35
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Schematic
Users may refer to Datasheet Document SLVSC42 for additional Electrical Specifications.
3 Schematic
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4 List of Test Points
Test Points Name Description
J1 VIN DC Input to VIN
J2 VOUT VOUT Connection
JP1 VBIAS Connects VBIAS to VIN
JP2 ON Connects ON to VIN or GND
JP3 C1 Connects C1 to VIN
JP4 C5 Connects C5 to VOUT
JP5 R1 Connects R1 to VOUT
JP6 R2 Connects R2 to VOUT
TP1 VIN VIN of TPS22967
TP2 ON ON of TPS22967
TP3 VIN SEN Sense connect to VIN of TPS22967
TP4 VBIAS VBIAS of TPS22967
TP5 VOUT SEN Sense connect to VOUT of TPS22967
TP6 VOUT VOUT of TPS22967
TP7 GND Ground Connection
TP8 GND Ground Connection
TP9 GND Ground Connection
TP10 GND Ground Connection
Figure 1. TPS22967EVM-023 Schematic
Table 1. The Functions of Each Test Points
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5 Layout
Layout
Figure 2. TPS22967EVM-023 Top Assembly
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Layout
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TPS22967EVM-023 Single 4A Load Switch SLVU951–August 2013
Figure 3. TPS22967EVM-023 Topside
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Layout
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Figure 4. TPS22967EVM-023 Bottomside
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Layout
5.1 Typical Test Setups
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Figure 5. TPS22967EVM-023 Recommended Ron Test Set Up
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Layout
Figure 6. TPS22967EVM-023 Recommended Rise Time Test Set Up
5.2 Test Setup Equipment List
• Voltage Source:
– 1 Power Source capable of 10V 10A.
• Multimeters:
– 2 voltmeters
• Output Loads:
– Electronic Load or Resistor(If testing 4A operation of the switch at 5.5V a 22W power rated resistor
is needed)
• Oscilloscope:
– 2 channel 100MHz
• Signal Generator:
– Dual Channel Preferred
• Recommended Wire Gauge: 18 AWG
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Performance Data and Typical Characteristic Curves
5.3 Test Procedure (Standalone Setup)
Figure 5 shows a typical setup for RONtesting of the EVM. VBIAS voltage must be present for the device
to function. Place a shunt across JP1 to connect VBIAS to VIN voltage source, if VIN supply is used below
2.5V remove the shunt and connect VBIAS voltage to a voltage source greater or equal to 2.5V.
5.4 RONTest Procedure
1. Setup the EVM per Figure 5.
2. Set SOURCE1 level to 5.0V.
3. Place a shunt on JP2 shorting pins 1 to 2. This connects ON to VIN voltage, ON voltage must be
between 1.2V and 5.5V for a valid ON state. (When testing RONit is desired to have the switch
operating in the always ON condition.)
4. Place a load on VOUT.
5. Turn on SOURCE1.
6. Record the voltage reading from Meter1, record the input current reading from Source1. Calculate R
by dividing Meter1 voltage level by the current reading from Source1. The results will be the RONvalue
for the Switch.
7. Turn off Source1.
5.5 Trise/Ton Tfall/Toff Test Procedure
1. Set up the EVM per Figure 6.
2. Set SOURCE1 level to 5.0V VBIAS is operational between 2.5V and 5.25V, Datasheet limits are
specified with VBIAS set at 5.0V.
3. Remove shunt from JP2.
4. Place a load on VOUT1 (a 10Ω 3.25W resistor is recommended for this test).
5. Set signal generator outputs to 0-2Vpp levels, 10–100Hz, and 25% duty cycle. Connect signal
generator output to TP2.
6. Turn on SOURCE1.
7. Turn ON the signal generator output.
8. Trise and Ton can be observed from the oscilloscope channel2. A detailed description of tR, tON, tF, and
t
are listed in the TPS22967 Datasheet under the Switching Characteristics Section.
OFF
9. Turn off Source1, and the signal generator output.
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ON
6 Performance Data and Typical Characteristic Curves
Figure 7 through Figure 8 present typical performance curves for TPS22967EVM-023.
10
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6.1 Trise/Tfall Curves
Performance Data and Typical Characteristic Curves
Figure 7. TPS22967EVM-023 Trise/Ton VIN=5V VBIAS=5V ct=1nF Load =10Ω.
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Performance Data and Typical Characteristic Curves
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Figure 8. TPS22967EVM-023 Tfall/Toff VIN=5V VBIAS=5V ct=1nF Load =10Ω.
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7 Bill of Materials
Table 2 shows the EVM components list according to the schematic shown in Figure 1.
-002
Count
RefDes Value Description Size Part Number MFR
0 C1, C5 DNP Capacitor, Ceramic, 25V, X7R, 20% 0603 Std Std
1 C2 1 µF Capacitor, Ceramic, 25V, Y5R, 20% 0603 GRM188F51E105ZA12D Murata
1 C3 1 nf Capacitor, Ceramic, 50V, X7R, 10% 0603 ECJ-1VB1H102K Panasonic
1 C4 0.1 µF Capacitor, Ceramic, 50V, Y5R, 20% 0603 GRM188F51H104ZA01D Murata
2 C6, C7 0.01 µF Capacitor, Ceramic, 50V, X7R, 10% 0603 0603B103K500BT Vishay
2 J1, J2 ED120/2DS Terminal Block 2-pin, 15-A, 5.1mm 0.40 x 0.35 inch ED120/2DS OST
JP1, JP3, JP4, JP5,
5 PEC02SAAN Header, Male 2-pin, 100mil spacing 0.100 inch x 2 PEC02SAAN Sullins
JP6
1 JP2 PEC03SAAN Header,Male3-pin, 100mil spacing 0.100 inch x 3 PEC03SAAN Sullins
0 R1, R2 DNP Resistor, Chip, 1.16W, x% 0805 Std Std
TP1, TP2, TP3,
6 5010 Test Point, Red, Thru Hole Compact Style 0.125 x 0.125 inch 5005 Keystone
TP4, TP5, TP6
TP7, TP8, TP9,
4 5011 Test Point, Black, Thru Hole Compact Style 0.125 x 0.125 inch 5006 Keystone
TP10
0 U1 TPS22965DSG IC, 6-A Load Switch with Controlled Turn-on SON-8 TPS22965DSG TI
1 U1 TPS22967DSG IC, 4-A Load Switch with Controlled Turn-on SON-8 TPS22967DSG TI
2 Shunt, Black 100-mil 929950-00 3M
1 — PCB, 2 In x 1.5 In x 0.062 In HVL023 Any
1 NA Label (see Note 5) 1.25 x 0.25 inch THT-13-457-10 Brady
Bill of Materials
Table 2. EVM Components List
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