Texas Instruments TPS6030 EVM-170 Series, Руководство пользователя, Страница: 9 / 14

1-2
1.1 Basic Operation of the Device
The TPS6030x series are charge pumps working either in a tripler or in a
quadrupler mode.
They consist of an unregulated doubler stage with its capacitors C
FLY1
and
C
OUT1
. Its output voltage can be found at OUT1. The voltage at OUT1 is
internally connected to the input of a regulated charge pump that works in a
×
1.5 or
×
2 mode, respectively. It provides 3.3-V (3-V) output voltage at its
output OUT2.
The maximum output current of the TPS6030x devices is 20 mA at the regu-
lated output (OUT2). The unregulated output (OUT1) can deliver up to 40 mA
when OUT2 is not loaded.
The TPS6030x charge pumps are available with an open drain or push-pull
power good output. On the EVM, the TPS60302 with a 3.3-V output voltage
and push-pull power good output is used.
For a description of the different operation modes and a functional description,
refer to the TPS6030x data sheet (literature number SLVS302).