Datasheet

TPS2300 and TPS2301
1-2
1.1 TPS2300 and TPS2301
Both the TPS2300 and TPS2301 are dual-channel hot-swap controllers that
use external N-channel MOSFETs as high-side switches in power applica-
tions. The devices integrate features such as overcurrent protection, inrush-
current control, output-power status reporting, and separation of load tran-
sients from actual load increases, which are the critical requirements for hot-
swap applications. The only difference between TPS2300 and TPS2301 is the
polarity of the enable pin.
For a detailed description of functions and characteristics of the TPS2300 and
TPS2301, refer to the data sheet (literature number SLVS265A). Check data
sheet and ordering information on web site:
http://www.ti.com/sc/docs/products/analog/tps2300.html
The minimum number of external parts for each channel is four: an N-channel
MOSFET, a current-sense resistor, a current-limit-setting resistor, and a timing
capacitor. Refer to the data sheet to select appropriate values for these com-
ponents. For different applications, a gate capacitor may be required to limit
excessive inrush current or very heavy load, and input capacitors can help to
hold the input voltage in the designed range.
To assist designers in evaluating the hot-swap controllers, TI has developed
a set of evaluation modules based on the active-high-enabling TPS2301. The
modules are: the hot-swap EVM and the interface card.
1.2 EVM and Interface Card Schematics
To demonstrate a hot-plug or hot-removal application, the EVM set includes
two boards: one is the hot-swap EVM (SLVP153), where the TPS2301 is
mounted for control of power MOSFETs; the other is an interface card
(SLVP155) that supplies power and control signals to the hot-swap EVM.
Figures 1–1 and 1–2 show the schematic of the hot-swap board and the sche-
matic of the interface card, respectively.