Table 11-1. Recommended Supply Load Capacitance
PARAMETER DESCRIPTION
VOLTAGE
RATING
CAPACITANCE
MIN
(ABS
MIN)
TYP
(TYP
PLACED)
MAX
(ABS MAX)
CVIN_3V3 Capacitance on VIN_3V3 6.3 V 5 µF 10 μF
CLDO_3V3 Capacitance on LDO_3V3 6.3 V 5 µF 10 µF 25 µF
CVOUT_3V3 Capacitance on VOUT_3V3 6.3 V 0.1 μF 1 μF 2.5 μF
CLDO_1V8D Capacitance on LDO_1V8D 4 V 500 nF 2.2 µF 12 µF
CLDO_1V8A Capacitance on LDO_1V8A 4 V 500 nF 2.2 µF 12 µF
CLDO_BMC Capacitance on LDO_BMC 4 V 1 µF 2.2 µF 4 µF
CVDDIO Capacitance on VDDIO. When shorted to LDO_3V3, the CLDO_3V3
capacitance may be shared.
6.3 V 0.1 µF 1 µF
CVBUS Capacitance on VBUS 1 25 V 0.5 µF 1 µF 12 µF
CPP_5V0 Capacitance on PP_5V0 10 V 2.5 µF 4.7 µF
CPP_HV Capacitance on PP_HV (Source to VBUS) 25 V 2.5 µF 4.7 µF
Capacitance on PP_HV (Sink from VBUS) 25 V 47 µF 120 µF
CPP_CABLE Capacitance on PP_CABLE. When shorted to PP_5V0, the
CPP_5V0 capacitance may be shared.
10 V 2.5 µF 4.7 µF
CPP_HVEXT Capacitance on external high voltage source to VBUS 25 V 2.5 µF 4.7 µF
Capacitance on external high voltage sink from VBUS 25 V 47 µF 120 µF
CSS Capacitance on soft start pin 6.3 V 220 nF
CC_CC1 Capacitance on C_CC1 pin 25 V 220 pF 330 pF 470 pF
CC_CC2 Capacitance on C_CC2 pin 25 V 220 pF 330 pF 470 pF
11.3.2 Schottky for Current Surge Protection
To prevent the possibility of large ground currents into the TPS65982 during sudden disconnects because of
inductive effects in a cable, it is recommended that a Schottky be placed from VBUS to GND as shown in Figure
11-1. The NSR20F30NXT5G is recommended.
PP_5V0 VBUS
Fast
current
limit
PP_5V0 Gate Control
and Current Limit
PP_HV
Fast
current
limit
PP_HV Gate Control
and Current Limit
HV Gate Control and Sense
SENSEP
SENSEN
HV_GATE1
HV_GATE2
PP_EXT
AGND
Figure 11-1. Schottky on VBUS for Current Surge Protection
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TPS65982
SLVSD02E – MARCH 2015 – REVISED AUGUST 2021
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