Unless otherwise specified the following conditions apply: VIN = 13.5 V,
fSW = 400 kHz, L = 3.3 µH, CSENSE = 141 µF,
CPA_BUS = 1 µF, CPB_BUS = 1 µF, ILIM = GND,
TA = 25 °C.
Unless otherwise specified the following conditions apply: VIN = 13.5 V,
fSW = 400 kHz, L = 3.3 µH, CSENSE = 141 µF,
CPA_BUS = 1 µF, CPB_BUS = 1 µF, ILIM = GND,
TA = 25 °C.VSET = GND | fSW = 400
kHz | L = 3.3 uH |
Figure 11-3 Buck Only
Efficiency. Unless otherwise specified the following conditions apply: VIN = 13.5 V,
fSW = 400 kHz, L = 3.3 µH, CSENSE = 141 µF,
CPA_BUS = 1 µF, CPB_BUS = 1 µF, ILIM = GND,
TA = 25 °C. Figure 11-5 Load
Regulation
VSET = VSENSE |
IPA_BUS = 0 A to 3 A |
IPB_BUS = 3
A |
fSW = 400
kHZ |
Figure 11-7 Load Transient Without
Cable Compensation
VSET = VSENSE |
IPA_BUS = 0.75 A to 2.25 A |
IPB_BUS = 0
A |
fSW = 400
kHZ |
Figure 11-9 Load Transient Without
Cable Compensation
VSET = GND |
IPB_BUS = 0.75 A to 2.25 A |
IPA_BUS = 0
A |
fSW = 400
kHZ |
Figure 11-11 Load Transient With Cable
Compensation
VSET = GND |
IPA_BUS = 3
A |
IPB_BUS = 3
A |
fSW = 400 kHZ |
Figure 11-13 6-A Output Ripple
VSET = GND |
IPA_BUS = 0
A |
IPB_BUS = 0
A |
fSW = 400 kHZ |
Figure 11-15 No Load Output
Ripple
VIN = 13.5 V to 0 V |
PA_CC1 =
Rd |
IPA_BUS = 3
A |
Figure 11-17 Shutdown Relate to
VIN
EN = 5 V to 0 V |
PB_CC1 =
Rd |
IPB_BUS = 3
A |
Figure 11-19 Shutdown Relate to
EN
PA_CC1 = Rd to
Open |
PA_CC2 = Open |
IPA_BUS = 3
A |
Figure 11-21 Rd DesertFigure 11-23 Short Circuit
Recovery Figure 11-25 1-Ω Load Recovery Figure 11-27 PA_CC2 Hot Short to
GND
PA_CC1 =
Rd |
OUT = GND |
PA/B_BUS NO LOAD |
Figure 11-29 OUT Hot Short to
GND
VTS = 0 V to 4
V |
PA_CC1 =
Rd |
PA_CC2 = OPEN |
Figure 11-31 Thermal Sensing - NTC
Temperature HOT Behavior
PA_BUS = 3A, PB_BUS =
3A |
fSW = 400
kHz |
L = 3.3 uH |
Figure 11-4 400-khz EMI Results
(Without CM Filter)Figure 11-6 Line
Regulation
VSET = VSENSE |
IPB_BUS = 0 A to 3 A |
IPA_BUS = 3
A |
fSW = 400
kHZ |
Figure 11-8 Load Transient Without
Cable Compensation
VSET = GND |
IPB_BUS = 0 A to 3 A |
IPA_BUS = 3 A |
fSW = 400 kHZ |
Figure 11-10 Load Transient With Cable
CompensationFigure 11-12 Dropout
Characteristic
VSET = GND |
IPA_BUS = 0.1
A |
IPB_BUS = 0
A |
fSW = 400 kHZ |
Figure 11-14 100-mA Output
Ripple
VIN = 0 V to 13.5 V |
PA_CC1 =
Rd |
IPA_BUS = 3
A |
Figure 11-16 Startup Relate to
VIN
EN = 0 V to 5 V |
PB_CC1 =
Rd |
IPB_BUS = 3
A |
Figure 11-18 Startup Relate to
EN
PA_CC1 = Open to
Rd |
PA_CC2 = Open |
IPA_BUS = 3
A |
Figure 11-20 Rd Assert
EN to High |
PA_BUS = GND |
PB_BUS = GND |
Figure 11-22 Enable Into Short
EN to High |
PA_BUS = 1 Ω |
PB_BUS = 1 Ω |
Figure 11-24 Enable Into 1-Ω
LoadFigure 11-26 VBUS Hot Short to
GND
PA_CC1 =
Rd |
OUT = 5.1 Ω |
PA/B_BUS NO LOAD |
Figure 11-28 OUT short to 5.1-Ω
Load
VTS = 0 V to 2.6
V |
PA_CC1 =
Rd |
PA_CC2 = OPEN |
Figure 11-30 Thermal Sensing - NTC
Temperature WARM Behavior