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參數(shù)資料
| 型號(hào)： | TSM102A |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | DUAL OPERATIONAL AMPLIFIER - DUAL COMPARATOR AND ADJUSTABLE VOLTAGE REFERENCE |
| 中文描述： | 雙路運(yùn)算放大器-雙通道比較器和可調(diào)電壓基準(zhǔn) |
| 文件頁(yè)數(shù)： | 6/10頁(yè) |
| 文件大小： | 74K |
| 代理商： | TSM102A |
APPLICATION NOTE
by R. LIOU
A Li-Ion BATTERY CHARGER USING TSM102A
This application note explains how to use the
.
Voltage Control
.
CurrentControl
.
Low Battery Detection and End Of Charge
Detection
1 - TSM102 PRESENTATION
The
TSM102
integratedcircuitincludestwoOpera-
tional Amplifiers, twoComparatorsandoneadjust-
able precision Voltage Reference (2.5V to 36V,
0.4% or 1%).
TSM102 can sustain up to 36Vpower supply volt-
age.
1
2
3
14
15
16
5
6
7
12
11
10
V
CC
+
Vref
Ca thode
V
CC
-
COMP
COMP
TSM102
Figure 1 :
TSM102Pinout
2 - APPLICATION CONTEXT ANDPRINCIPLE
OF OPERATION
In the battery charging field which requires ever
increasing performances in more and more re-
duced space, the TSM102Aprovides an attractive
solutionintermsofPCB areasaving,precisionand
versatility.
Figure 2 shows the secondary side of a battery
charger (SMPS type) where TSM102A is used in
optimisedconditions: the two OperationalAmplifi-
ers perform current and voltage control, the two
Comparators provide ”End of Charge” and ”Low
Battery” signals and the Voltage Reference en-
sures precisereference for allmeasurements.
The TSM102A is supplied by an auxiliary power
supply (forward configuration- D7) regulatedby a
bipolartransistoranda zenerdiodeon its base(Q2
and DZ), and smoothedby the capacitorsC3 and
C4. R15polarizes the baseof thetransistor andat
the same time limits the currentthrough the zener
diodeduringregulationmodeoftheauxiliarypower
supply.
The current and voltage regulations are made
thanks to the two OperationalAmplifiers.
The first amplifier senses the current flow through
the sense resistor Rs and compares it with a part
of the reference voltage (resistor bridge R7, R8,
R9). The secondamplifiercompares the reference
voltagewith a part ofthe charger’s output(resistor
bridge R1, R2, R3).
When either of these two operational amplifiers
tends to lower its ouput, this linear information is
propagatedtowardstheprimaryside viatwo ORing
diodes (D1, D2) and an optocoupler (D3). The
compensationloops of these regulation functions
are ensuredby the capacitorsC1 and C2.
TSM102
6/10
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TSM102AI | DUAL OPERATIONAL AMPLIFIER - DUAL COMPARATOR AND ADJUSTABLE VOLTAGE REFERENCE |
| TSM102ID | DUAL OPERATIONAL AMPLIFIER - DUAL COMPARATOR AND ADJUSTABLE VOLTAGE REFERENCE |
| TSM102IN | DUAL OPERATIONAL AMPLIFIER - DUAL COMPARATOR AND ADJUSTABLE VOLTAGE REFERENCE |
| TSM102AID | DUAL OPERATIONAL AMPLIFIER - DUAL COMPARATOR AND ADJUSTABLE VOLTAGE REFERENCE |
| TSM102AIN | DUAL OPERATIONAL AMPLIFIER - DUAL COMPARATOR AND ADJUSTABLE VOLTAGE REFERENCE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TSM102AI | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:VOLTAGE AND CURRENT CONTROLLER |
| TSM102AID | 功能描述:DC/DC 開關(guān)控制器 Voltage/Current Cont RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TSM102AIDG4 | 功能描述:運(yùn)算放大器 - 運(yùn)放 Dual Opamp Dual Comp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| TSM102AIDR | 功能描述:運(yùn)算放大器 - 運(yùn)放 Dual Opamp Dual Comparator RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| TSM102AIDRG4 | 功能描述:運(yùn)算放大器 - 運(yùn)放 Dual Opamp Dual Comp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
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