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參數(shù)資料
| 型號(hào)： | TSM111D |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | TRIPLE VOLTAGE AND CURRENT SUPERVISOR |
| 中文描述： | 三電壓及目前的上司 |
| 文件頁(yè)數(shù)： | 9/18頁(yè) |
| 文件大小： | 154K |
| 代理商： | TSM111D |
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AN EXAMPLE OF 90W MICRO ATX
POWER SUPPLY USING L5991A, VI-
PER20 AND TSM111
Protectionagainstaccidentalshort circuitsandfault
conditions is mandatory in PC power supplies.
These protection circuits can be realized by using
many discrete components which occupy a lot of
PCBspace,designtimeinfine tuningthecircuit and
also addto assemblingcosts.
ST’ssinglechip TSM111ICprovidescompletepro-
tection circuits designeasier, with fewer number of
components.TSM111 is an idealsupervisor IC for
PC powersupplies.
The salient featuresand benefits of this device are
listed below:
a)Overvoltageprotectionfor3.3V,5Vand12Vwith-
out externalcomponent.
b) Over current protectionfor 3.3V, 5V and12V.
c) GeneratesPower Goodsignal.
d) Programmabletiming for Power Goodsignal.
e) Wide range supply operating voltage up to 36V
(44V AMR).
f) Stableinternalvoltage reference.
g) Two 1.6% voltagereferencefor Main and Auxil-
iary regulation.
h) Few external components.
i) Circuit occupieslittle space on PCB.
j) Easy implementation of thecircuit.
FEATURE DESCRIPTIONS
a)Overvoltageprotectioncanbeimplementedwith-
out any additional components.Overvoltagesense
levels for3.3V,5V,12Vare4V,6.1V,14.2Vrespec-
tively. With very little tolerances,betterprotectionis
achieved.
b) Overcurrent protectioncan beimplemented with
very small value sense resistors. As the current
sense thresholdlevels are set very low, regulation
is not affected.The current sense threshold levels
for 3.3V, 5V, 12V are 50mV, 50mV and 65mV re-
spectively.
c) The power goodsignal (pin9) is asserted to indi-
cate the 5V and 3.3V is above the under voltage
thresholdlevel. PG pin goes high when the above
conditionis reached.Pull up resistor R27 (3.1K) is
connectedto 5V STDBY supplyfrom this pin.
d) The timing of thepowergood signalcan be con-
trolledbyadjustingthe valueofthechargingcapaci-
tor on pin 10. With 2.2
μ
F/16V capacitoron pin 10,
400msecturn on delayis achieved.
e) Thepower supplycanbe operatedfrom 14.5Vto
36V.TheV
CC
mustalwaysbehigherthanthesupply
voltageon the 12Vinput pin by 2V .i.e. if 14Vis ap-
pearing12V inputpin the Vcc must be > 16V.
A COMPLETE PC SMPS SECONDARY SUPERVISOR
TSM111
9/18
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TSM111N | TRIPLE VOLTAGE AND CURRENT SUPERVISOR |
| TSM112D | 3.3V 5V 12V HOUSEKEEPING IC |
| TSM112N | 3.3V 5V 12V HOUSEKEEPING IC |
| TSM112 | 3.3V 5V 12V HOUSEKEEPING IC |
| TSM112CD | 3.3V 5V 12V HOUSEKEEPING IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TSM111N | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TRIPLE VOLTAGE AND CURRENT SUPERVISOR |
| TSM112 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V 5V 12V HOUSEKEEPING IC |
| TSM-112-01-F-DH | 制造商:Samtec Inc 功能描述:.025 SQ. TERMINAL STRIPS - Bulk |
| TSM-112-01-F-DH-A | 制造商:Samtec Inc 功能描述:CONN UNSHRD HDR HDR 24 POS 2.54MM SLDR RA SMD - Bulk |
| TSM-112-01-F-DH-K-TR | 制造商:Samtec Inc 功能描述:.025 SQ. TERMINAL STRIPS - Tape and Reel |
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