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TPS22967EVM-023
User Manual
14 pgs311.28 Kb0

Texas Instruments TPS22967EVM-023 User Manual

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
2 Electrical Performance Specifications .................................................................................... 3
3 Schematic .................................................................................................................... 4
4 List of Test Points ........................................................................................................... 4
5 Layout ........................................................................................................................ 5
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
SLVU951–August 2013 TPS22967EVM-023 Single 4A Load Switch
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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
TPS22967EVM-023 Single 4A Load Switch SLVU951–August 2013
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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
SLVU951–August 2013 TPS22967EVM-023 Single 4A Load Switch
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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
4
TPS22967EVM-023 Single 4A Load Switch SLVU951–August 2013
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5 Layout
Layout
Figure 2. TPS22967EVM-023 Top Assembly
SLVU951–August 2013 TPS22967EVM-023 Single 4A Load Switch
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