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Revision 0.6
OMAP TM 4 PandaBoard System
Reference Manual
TWL6030
November 29, 2010
DOC-21010
Mini-AB
(J18)
VBUS
GND
1
5
F1
P
IO
VBUS
ID
VDD_3V3
DVI & RS-232 Circuitry
VBAT
TPS2141
DC Input Jack
I
(U22)
LDO_IN LDO_OUT
O
TL1963ADCQ
(U23)
(P3)
NUSB_PWR
R150
EN_VBUSPWRn
I
I
SW_IN
SW_EN
SW_OUT
O
DC_5V
VBAT
DCIN_JACK
Input current path w/ no
FDC6330L
(U17)
external DC supply
R164
R162
Input current path w/ external
DC supply attached
TPS3803G15
(U20)
FDC6330L
(U15)
DC_HST_5V
(to USB Host Ports)
HUB_nPD (GPIO_1)
Figure 4 – PandaBoard Input Power Circuitry Block Diagram
With an external power supply plugged in, the 5Vdc input power is supplied from the input DC jack at
P3. The current capability in this mode is only limited by the particular DC supply being used. The path
of current flow in this mode is designated below by the blue arrows. The switch at U22 will be disabled
by the insertion of the DC input jack in this mode, and the regulated 5Vdc from the wall supply will be
connected to the input of the LDO at U23, which provides a 4.2V “battery” voltage for the TWL6030 and
TWL6040 Companion ICs.
An acceptable DC supply that may be used with the PandaBoard is one manufactured by CUI,
Incorporated (P/N ETS050400UTC-P5P-SZ). A datasheet for this supply may be found at
http://products.cui.com/getPDF.aspx?filename=20+W+desktop.pdf . This supply has a 5.5mm outside
jack diameter, and a 2.1mm inside diameter. It is currently in stock, and may be ordered from Digikey
(Digikey P/N T951-P5P-ND).
CAUTION: only use a 5Vdc regulated power supply to power the
PandaBoard. Connecting a supply with an output higher than +5Vdc
could cause possible board damage.
Page 25 of 82
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相关PDF资料
UEVM4460G-02-01-00 PANDABOARD ES
UHDM7218BPA PLATE BARRIER 71.86X17.87" GRY
UHDM7218ECA PLATE END 71.86X17.87" GREY
UHDM7218EPA PLATE END 71.86X17.87" GREY
UHDM8418BPA PLATE BARRIER 83.9X17.9X0.1" GRY
UHDM8418ECA PLATE END 83.9X17.9X2.5" GREY
UHDM8418EPA PLATE END 83.87X17.87" GREY
UHDM8424BPA PLATE BARRIER 83.9X23.9X0.1" GRY
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