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| 型號： | ISL6131IR-T |
| 廠商： | INTERSIL CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Multiple Voltage Supervisory ICs |
| 中文描述： | 4-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
| 封裝： | 4 X 4 MM, PLASTIC, MO-220VGGD-2, QFN-24 |
| 文件頁數(shù)： | 7/13頁 |
| 文件大?。?/td> | 457K |
| 代理商： | ISL6131IR-T |
7
FN9119.3
July 22, 2005
Applications Usage
Using the ISL613XSUPEREVAL2 Platform
The ISL613XSUPEREVAL2 platform is the primary
evaluation board for this family of supervisors and is
designed to support the
ISL6131, ISL6132.
In addition, it
also supports the
ISL6125
sequencer as it has open drain
RESET# outputs similar to the STATUS outputs of the
ISL6131
and
ISL6132
.
The ISL613XSUPEREVAL2 is shipped with a
ISL6125
soldered into the SMD channel 2 position and with 2 each of
the
ISL6131
(1 socketed) and
ISL6132
loose packed. The
four resistor divider strings are set so that VMON = VMON
Vth (0.633V) once supplies are 2.10V on the IN_D, 1.27V on
IN_C, 4.27V on IN_B and 2.78V on IN_A. On the
ISL6131
these are the 4 UV levels at ~85% of 2.5V, 1.5V, 5V and
3.3V respectively.
LEDs turned off are the PGOOD high indicators with D4
being the ISL6131 indicator.
With V
DD
ranging from 1.5V to 5V or shorted to IN_A
through JP1 and with an
ISL6131
in the socket, PGOOD will
release to be pulled high once those minimum conditions are
met. See Figures 10 to 17 for performance and function
examples.
With the
ISL6132
in the socket and IN_C and IN_D tied to a
common supply and IN_A and IN_B tied to a second supply
the
ISL6132
will look for a voltage between 1.27V to 2.10V
on the CD pair and between 2.78V and 4.27V for the AB
pair. Once either supply meets its requirement the related
PGOOD will release to pull high and turn off the related LED.
See Figures 18 to 24 for performance and function
examples. Figures 25 and 26 illustrate the
ISL613XSUPEREVAL2 platform in image and schematic.
Using the ISL6131, ISL6132 for Negative Voltage
Monitoring Applications
The ISL6131, ISL6132 can be used for -V monitoring as it
monitors any voltage more positive relative to its GND pin.
With correct bias differential these parts can monitor any
voltage regardless of polarity or amplitude.
Using the ISL6131 for ‘Loss Less’ Sequencing
Applications
The ISL6131 can be used in a ‘loss less’ sequencing
application where a monitored output voltage determines the
start of the next sequenced turn-on. As shown in Figure 7,
VMON_A input looks at the common VIn of several DC-DC
converters and enables DC-DC_A with STATUS _A, once
both VIn and ENABLE are satisfied. VMON_B monitors the
output of DC-DC_A and when the acceptable output voltage
is reached, DC-DC_B is enabled with STATUS_B output.
This sequencing pattern is continued until all DC-DC outputs
are on, at which time PGOOD signal will be released to
indicate. 160ms delay from VMON > V
VMONVth
to STATUS
high ensures stability at each step prior to subsequent turn-
on. Additional ISL6131s can be employed in parallel to
sequence any number of DC-DC convertors is in this
fashion.
Using the ISL6131 for System Voltage and Over
Temperature Monitoring
Being a multivoltage monitoring IC the ISL6131 can also be
used to monitor over temperature as well as voltage for a
more complete coverage of system health. Using a Negative
Temperature Coefficient (NTC) passive device in place of
one of the resistors in a VMON divider provides over
temperature monitoring either locally or remotely.
Evaluations of this application configuration have involved
the QT0805T-202J, QT0805Y-502J and QT0805Y-103J
NTCs from Quality Thermistor.
ISL6131 over temperature monitoring is not as accurate as
specific temperature monitor ICs but this implementation
provides a cost efficient solution with 5% tolerances
achievable.
See Figures 8 - 9 for over temp sensing configuration and
operation results. In this example, the desired maximum
temp is 100°C. The QT0805Y-103J NTC was placed at the
end of 3 feet of twisted pair wire to emulate a remote sensing
application. From the Quality Thermistor data sheet, this
NTC device has a +25°C value of 10K and at +100°C a
value of 0.923K. An accompanying standard value resistor
of 3.83K was chosen for divider so that at 100°C, VMON
~0.633V with the bias voltage at 3.3V.
FIGURE 7. ISL6131 ‘LOSSLESS’ SEQUENCING
CONFIGURATION
DC-DC_A
VIN
VOUT
EN
VIN
VIN
VOUT
VOUT
EN
EN
DC-DC_B
DC-DC_C
VMON_A
VMON_D
VMON_C
VMON_B
ABC
STATUS
PGOOD
GND
VDD
ENABLE
ISL6131
ISL6131, ISL6132
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISL6131 | Multiple Voltage Supervisory ICs |
| ISL6131IR | Multiple Voltage Supervisory ICs |
| ISL6131IRZA | Multiple Voltage Supervisory ICs |
| ISL6132 | Octal Edge-Triggered D-Type Flip-Flops With 3-State Outputs 20-PDIP -40 to 85 |
| ISL6132IR | Multiple Voltage Supervisory ICs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL6131IRZA | 功能描述:監(jiān)控電路 W/ANNEAL 4-CH UV SUPERVISOR Y IC RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| ISL6131IRZA-T | 功能描述:IC SUPERVISOR 4-CHAN 24-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開路漏極或開路集電極 復(fù)位:低有效 復(fù)位超時(shí):最小為 600 ms 電壓 - 閥值:3.8V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:帶卷 (TR) |
| ISL6132 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Multiple Voltage Supervisory ICs |
| ISL6132EVAL1Z | 制造商:Intersil Corporation 功能描述:ISL6132 EVAL BOARD - 24 LEAD - MLFP - ROHS - Bulk 制造商:Intersil Corporation 功能描述:BOARD EVAL FOR ISL6132 |
| ISL6132IR | 功能描述:IC SUPERVISOR VOLT 2-LINE 24-QFN RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:- 復(fù)位:低有效 復(fù)位超時(shí):最小為 100 ms 電壓 - 閥值:4.38V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件 |
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