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
EN
Ihys
VIN
+
-
TPS54060
R1
R2
VOUT
R3
I1
0.9 Am
2.9 Am
1.25V
START STOP
OUT
HYS
V V
R1
V
I
R3
-
=
+
ENA
START ENA
ENA
1
V
R2
V V
V
I
R1 R3
=
-
+ -
TPS54060
SLVS919A –JANUARY 2009–REVISED JULY 2010
www.ti.com
DETAILED DESCRIPTION (continued)
Figure 29. Adding Additional Hysteresis
(4)
(5)
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