Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- DESCRIPTION
- ABSOLUTE MAXIMUM RATINGS
- THERMAL INFORMATION
- ELECTRICAL CHARACTERISTICS
- DEVICE INFORMATION
- TYPICAL CHARACTERISTICS
- OVERVIEW
- DETAILED DESCRIPTION
- Fixed Frequency PWM Control
- Slope Compensation Output Current
- Pulse Skip Eco-Mode
- Low Dropout Operation and Bootstrap Voltage (BOOT)
- Error Amplifier
- Voltage Reference
- Adjusting the Output Voltage
- Enable and Adjusting Undervoltage Lockout
- Slow Start/Tracking Pin (SS/TR)
- Overload Recovery Circuit
- Sequencing
- Constant Switching Frequency and Timing Resistor (RT/CLK Pin)
- Overcurrent Protection and Frequency Shift
- Selecting the Switching Frequency
- How to Interface to RT/CLK Pin
- Power Good (PWRGD Pin)
- Overvoltage Transient Protection
- Thermal Shutdown
- Small Signal Model for Loop Response
- Simple Small Signal Model for Peak Current Mode Control
- Small Signal Model for Frequency Compensation
- APPLICATION INFORMATION
- Design Guide — Step-By-Step Design Procedure
- Selecting the Switching Frequency
- Output Inductor Selection (LO)
- Output Capacitor
- Catch Diode
- Input Capacitor
- Slow Start Capacitor
- Bootstrap Capacitor Selection
- Under Voltage Lock Out Set Point
- Output Voltage and Feedback Resistors Selection
- Compensation
- Discontinuous Mode and Eco Mode Boundary
- APPLICATION CURVES
- Power Dissipation Estimate
- Layout
- Revision History

100
105
110
115
120
-50 -25 0 25 50 75 100 125 150
I - A
I(SS/TR)
m
T -JunctionTemperature-°C
J
V =12V
I
0
20
40
60
80
100
0 0.2 0.4 0.6 0.8
V -V
SENSE
V =12V,
T =25°C
I
J
%ofNominalf
sw
0
0.5
1
1.5
2
-50 -25 0 25 50 75 100 125 150
I - A
(VIN)
m
T -JunctionTemperature-°C
J
V =12V
I
0
0.5
1
1.5
2
0 10 20 30 40 50 60
V -InputVoltage-V
I
I - A
(VIN)
m
T =25°C
J
90
100
110
120
130
140
0 20 40 60
I - A
(VIN)
m
V -InputVoltage-V
I
T =25 C,
V =0.83V
J
I(VSENSE)
o
90
100
110
120
130
140
-50 -25 0 25 50 75 100 125 150
I - A
(VIN)
m
T -JunctionTemperature-°C
J
V =12V,
V =0.83V
I
I(VSENSE)
TPS54060
www.ti.com
SLVS919A –JANUARY 2009–REVISED JULY 2010
TYPICAL CHARACTERISTICS (continued)
SS/TR DISCHARGE CURRENT vs JUNCTION
TEMPERATURE SWITCHING FREQUENCY vs VSENSE
Figure 13. Figure 14.
SHUTDOWN SUPPLY CURRENT vs JUNCTION
TEMPERATURE SHUTDOWN SUPPLY CURRENT vs INPUT VOLTAGE (V
in
)
Figure 15. Figure 16.
VIN SUPPLY CURRENT vs JUNCTION TEMPERATURE VIN SUPPLY CURRENT vs INPUT VOLTAGE
Figure 17. Figure 18.
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