Datasheet

TPS62175
VIN
EN
SLEEP
AGND
PGND
SW
VOS
PG
FB
NC
VIN
VOUT
10uH
COUT
CIN
R3
R1
R2
TPS62175, TPS62177
SLVSB35B –OCTOBER 2012–REVISED JANUARY 2014 www.ti.com
PARAMETER MEASUREMENT INFORMATION
List of Components
REFERENCE DESCRIPTION MANUFACTURER
IC 28V, 0.5A Step-Down Converter, WSON TPS62175DQC, Texas Instruments
L1 10uH, (4 x 4 x 1.2) mm LPS4012, Coilcraft
Cin 2.2µF, 50V, Ceramic, 0805, X5R Standard
Cout 22µF, 6.3V, Ceramic, 0805, X5R Standard
R1 depending on Vout
R2 depending on Vout
R3 100kΩ, Chip, 0603, 1/16W, 1% Standard
spacing
spacing
Figure 4. Measurement Setup
TYPICAL CHARACTERISTICS
Table of Graphs
DESCRIPTION FIGURE
Efficiency vs Output Current, vs Input Voltage 5 - 20
vs Output current (Load regulation) 21
Output voltage
vs Input Voltage (Line regulation) 22
vs Input Voltage 23
Switching Frequency
vs Output Current 24
Quiescent Current vs Input Voltage 25, 26
Shutdown Current vs Input Voltage 27
Power FET RDS(on) vs Input Voltage (High-Side, Low-Side) 28, 29
Maximum Output Current vs Input Voltage 30
Sleep Mode Transition 31, 32
Load Transient Response 33 - 38
Line Transient Response 39, 40
Startup 41 - 43
Waveforms
Output Discharge 44
Typical Operation (PWM Mode, Power Save Mode, Sleep
45 - 52
Mode, Short Circuit)
Triangular Load Sweep with Mode Transitions 53, 54
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