鈥?/div>
The master power supply, which is automatically designated as the supply
that regulates to the highest voltage, drives the share bus with a voltage
Compatible with Existing Power
Supply Designs Incorporating Remote
proportional to its output current. The UC3902 trims the output voltage of
Output Voltage Sensing
the other paralleled supplies so that they each support their share of the
load current. Typically, each supply is designed for the same current level
Differential Share Bus
although that is not necessary for use with the UC3902. By appropriately
Precision Current Sense Amplifier with
scaling the current sense resistor, supplies with different output current ca-
Gain of 40
pability can be paralleled with each supply providing the same percentage
of their output current capability for a particular load.
UVLO (Undervoltage Lockout)
Circuitry
A differential line is used for the share bus to maximize noise immunity and
accommodate different voltage drops in each power converter鈥檚 ground re-
User Programmable Share Loop
turn line. Trimming of each converter鈥檚 output voltage is accomplished by
Compensation
injecting a small current into the output voltage sense line, which requires a
small resistance (typically 20鈩?鈥?100鈩? to be inserted.
BLOCK DIAGRAM
LOAD SHARE CONTROLLER
GND
1
BIAS
UVLO
SHARE DRIVE AMPLIFIER
40R
R
SENSE
2
8
VCC
鈥?/div>
+
鈥?/div>
+
CURRENT SENSE
AMPLIFIER
7
SHARE+
+
SHARE SENSE AMPLIFIER
鈥?/div>
6
SHARE鈥?/div>
ADJ
3
ADJ AMPLIFIER
0.6V
35mV
+
+
+
鈥?/div>
ERROR AMPLIFIER
+
鈥?/div>
ADJR
4
5
2.3V
COMP
UDG-99042
SLUS232 - FEBRUARY 1999
UC2902相關(guān)型號(hào)PDF文件下載
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型號(hào)
版本
描述
廠商
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英文版
Isolated Feedback Generator
TI
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英文版
Isolated Feedback Generator
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英文版
Load Share Controller
TI
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英文版
Load Share Controller
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英文版
Quad Supply and Line Monitor
TI
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英文版
Quad Supply and Line Monitor
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英文版
Precision Quad Supply and Line Monitor
TI
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英文版
Precision Quad Supply and Line Monitor
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英文版
Sealed Lead-Acid Battery Charger
TI
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英文版
Sealed Lead-Acid Battery Charger
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英文版
Load Share Controller
TI
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英文版
Load Share Controller
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英文版
Switchmode Lead-Acid Battery Charger
TI
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英文版
Switchmode Lead-Acid Battery Charger
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英文版
4-Bit DAC and Voltage Monitor
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英文版
5V to 35V Hot Swap Power Manager
TI
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英文版
5V to 35V Hot Swap Power Manager
-
英文版
Half-Bridge Bipolar Switch
TI
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英文版
Half-Bridge Bipolar Switch
-
英文版
Precision Reference with Low Offset Error Amplifier
1
2
3
4
5
6
