- 您现在的位置：买卖IC网 > Sheet目录1248 > TPABASEKITEVM (Texas Instruments)EVAL MODULE AUDIO AMP PLATFORM
Power
3.3 Power
TI audio modules installed in the TI Plug-N-Play Audio Amplifier Evaluation
Platform operate from either an unregulated V CC supply or a regulated V DD
supply. The platform can be powered from an on-board battery or from any of
several different external sources.
3.3.1
Platform Power Distribution
The platform is equipped with a number of connectors for power input, and a
V CC bus and a V DD line for on-board power distribution. The V CC bus uses
jumper block JP1 OR JP2 OR JP3 to connect it to the desired power input
connector. Only ONE of these jumpers should be installed at any one time.
On-board switch S1 applies V CC power to the modules installed on the
platform. Note that S1 also controls V DD power only when V DD is supplied by
a power supply/voltage regulator module plugged into platform socket U6, and
not when V DD power is supplied from an external source at screw terminals
J6. LED1 and LED2 indicate the presence of power on the V CC bus and the
V DD line, respectively (Figure 3–4).
Figure 3–4. Platform Power Distribution
J1
VCC Bus
F1
S1
ICC
VCC
VCC
JP1
JP2
JP3
VR1
LED1
C1 470 μ F
R1
U6
Power
Supply
JP4
IDD
JP5 VDD
+
J6
D1 – D4
B1
LED2
F2
VDD
J2
AC/DC
R2
VR2
Jumper JP4 is in series with the V CC bus and allows easy monitoring of module
V CC current consumption (I CC ). JP5 is in series with the V DD line for I DD
measurement. Both current monitoring points are on the load side of the
indicator LEDs, so their current consumption will not be part of the
measurement.
3.3.2
Platform Power Protection
The platform V CC bus and the V DD line are protected against both excessive
voltage levels and reverse power polarity by zener diodes and fuses
connected to form crowbar circuits.
A zener diode is connected backwards between the V CC bus and ground so
that it is reverse-biased. If the input voltage exceeds the zener breakover
voltage, the diode suddenly conducts heavily, forming a low-impedance path
to ground. The resulting high current opens the fuse, removing the voltage.
Details
3-7
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
TPH-600
FUSE TELPOWER 600A 170V PWR DIST
TPHCS800-P
FUSEHOLDER W/SWITCH 300-800A UL
TPL-CZH
FUSE TELPOWER 800A 170VDC
TPS-70L
FUSE TELPOWER 70A 170VDC AXIAL
TPS2052BEVM-293
TPS2052BEVM-293
TPS22924CEVM-532
EVAL MODULE FOR TPS22924C
TPS2391EVM
EVAL MOD FOR TPS2391
TR2/1025FA2-R
FUSE 2A 125V FAST SMD 1025
相关代理商/技术参数
TPA-BNC
功能描述:测试配件 - 其他 TekVPI Interface adapter
RoHS:否 制造商:Tektronix 附件类型:Soft Case 颜色:Gray 设备类型:Transit Case 产品:Accessories
TPAC175D-490
制造商:TOTAL-POWER 制造商全称:TOTAL-POWER 功能描述:UNIVERSAL AC INPUT HARMONIC CORRECTION AC-DC HOT-SWAP CompactPCI QUAD OUTPUT 175 WATTS CURRENT SHARING SWITCHING POWER SUPPLIES TPAC175P & TPAC175D SE
TPAC175D-490O
制造商:TOTAL-POWER 制造商全称:TOTAL-POWER 功能描述:UNIVERSAL AC INPUT HARMONIC CORRECTION AC-DC HOT-SWAP CompactPCI QUAD OUTPUT 175 WATTS CURRENT SHARING SWITCHING POWER SUPPLIES TPAC175P & TPAC175D SE
TPAC175P
制造商:TOTAL-POWER 制造商全称:TOTAL-POWER 功能描述:UNIVERSAL AC INPUT HARMONIC CORRECTION AC-DC HOT-SWAP CompactPCI QUAD OUTPUT 175 WATTS CURRENT SHARING SWITCHING POWER SUPPLIES TPAC175P & TPAC175D SE
TPAC175P-490
制造商:TOTAL-POWER 制造商全称:TOTAL-POWER 功能描述:UNIVERSAL AC INPUT HARMONIC CORRECTION AC-DC HOT-SWAP CompactPCI QUAD OUTPUT 175 WATTS CURRENT SHARING SWITCHING POWER SUPPLIES TPAC175P & TPAC175D SE
TPAC175P-490E
制造商:TOTAL-POWER 制造商全称:TOTAL-POWER 功能描述:UNIVERSAL AC INPUT HARMONIC CORRECTION AC-DC HOT-SWAP CompactPCI QUAD OUTPUT 175 WATTS CURRENT SHARING SWITCHING POWER SUPPLIES TPAC175P & TPAC175D SE
TPAC175P-490O
制造商:TOTAL-POWER 制造商全称:TOTAL-POWER 功能描述:UNIVERSAL AC INPUT HARMONIC CORRECTION AC-DC HOT-SWAP CompactPCI QUAD OUTPUT 175 WATTS CURRENT SHARING SWITCHING POWER SUPPLIES TPAC175P & TPAC175D SE
TPAC200P
制造商:TOTAL-POWER 制造商全称:TOTAL-POWER 功能描述:UNIVERSAL AC INPUT HARMONIC CORRECTION AC-DC HOT-SWAP CompactPCI QUAD OUTPUT 200 WATTS ACTIVE CURRENT SHARING SWITCHING POWER SUPPLIES TPAC200P SERIES