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參數(shù)資料
| 型號： | HCPL-316J |
| 英文描述： | 2.0 Amp Gate Drive Optocoupler with Integrated (V CE ) Desaturation Detection and Fault Status Feedback(帶集成不飽和檢測和誤差反饋的2.0 Amp門驅(qū)動(dòng)耦合器) |
| 中文描述： | 2.0安培門極驅(qū)動(dòng)光電耦合器與集成（五長官）飽和檢測與故障狀態(tài)反饋（帶集成不飽和檢測和誤差反饋的2.0安培門驅(qū)動(dòng)耦合器） |
| 文件頁數(shù)： | 22/32頁 |
| 文件大?。?/td> | 503K |
| 代理商： | HCPL-316J |
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22
Slow IGBT Gate
Discharge During Fault
Condition
When a desaturation fault is
detected, a weak pull-down
device in the HCPL-316J output
drive stage will turn on to ‘softly’
turn off the IGBT. This device
slowly discharges the IGBT gate
to prevent fast changes in drain
current that could cause
damaging voltage spikes due to
lead and wire inductance. During
the slow turn off, the large output
pull-down device remains off until
the output voltage falls below V
EE
+ 2 Volts, at which time the large
pull down device clamps the
IGBT gate to V
EE
.
DESAT Fault Detection
Blanking Time
The DESAT fault detection
circuitry must remain disabled for
a short time period following the
turn-on of the IGBT to allow the
collector voltage to fall below the
DESAT theshold. This time
period, called the DESAT
blanking time, is controlled by
the internal DESAT charge
current, the DESAT voltage
threshold, and the external
DESAT capacitor. The nominal
blanking time is calculated in
terms of external capacitance
(C
BLANK
), FAULT threshold
voltage (V
DESAT
), and DESAT
charge current (I
CHG
) as
t
BLANK
= C
BLANK
x V
DESAT
/ I
CHG
.
The nominal blanking time with
the recommended 100 pF
capacitor is 100 pF * 7 V / 250
μ
A
= 2.8
μ
sec. The capacitance
value can be scaled slightly to
adjust the blanking time, though
a value smaller than 100 pF is not
recommended. This nominal
blanking time also represents the
longest time it will take for the
HCPL-316J to respond to a
DESAT fault condition. If the
IGBT is turned on while the
collector and emitter are shorted
to the supply rails (switching into
a short), the soft shut-down
sequence will begin after
approximately 3
μ
sec. If the IGBT
collector and emitter are shorted
to the supply rails
after the IGBT
is already on
, the response time
will be much quicker due to the
parasitic parallel capacitance of
the DESAT diode. The
recommended 100 pF capacitor
should provide adequate blanking
as well as fault response times for
most applications.
Under Voltage Lockout
The HCPL-316J Under Voltage
Lockout (UVLO) feature is
designed to prevent the
application of insufficient gate
voltage to the IGBT by forcing
the HCPL-316J output low during
power-up. IGBTs typically require
gate voltages of 15 V to achieve
their rated V
CE(ON)
voltage. At
gate voltages below 13 V
typically, their on-voltage
increases dramatically, especially
at higher currents. At very low
gate voltages (below 10 V), the
IGBT may operate in the linear
region and quickly overheat. The
UVLO function causes the output
to be clamped whenever
insufficient operating supply
(V
CC2
) is applied. Once V
CC2
exceeds V
UVLO+
(the positive-
going UVLO threshold), the
UVLO clamp is released to allow
the device output to turn on in
response to input signals. As
V
CC2
is increased from 0 V (at
some level
below
V
UVLO+
), first
the DESAT protection circuitry
becomes active. As V
CC2
is
further increased (above
V
UVLO+
), the UVLO clamp is
released. Before the time the
UVLO clamp is released, the
DESAT protection is already
active. Therefore, the UVLO and
DESAT FAULT DETECTION
features work together to provide
seamless protection regardless of
supply voltage (V
CC2
).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HCPL-316J#500 | 功能描述:邏輯輸出光電耦合器 2.0A IGBT Gate Drive RoHS:否 制造商:Fairchild Semiconductor 絕緣電壓:4243 Vrms 輸出類型:Push-Pull 最大傳播延遲時(shí)間:500 ns 最大正向二極管電壓: 最大反向二極管電壓: 最大正向二極管電流: 最大連續(xù)輸出電流:2.5 A 最大功率耗散:100 mW 最大工作溫度:+ 100 C 最小工作溫度:- 40 C 封裝 / 箱體:SO-16 封裝:Tube |
| HCPL-316J-000E | 功能描述:邏輯輸出光電耦合器 2.0A IGBT Gate Drive RoHS:否 制造商:Fairchild Semiconductor 絕緣電壓:4243 Vrms 輸出類型:Push-Pull 最大傳播延遲時(shí)間:500 ns 最大正向二極管電壓: 最大反向二極管電壓: 最大正向二極管電流: 最大連續(xù)輸出電流:2.5 A 最大功率耗散:100 mW 最大工作溫度:+ 100 C 最小工作溫度:- 40 C 封裝 / 箱體:SO-16 封裝:Tube |
| HCPL-316J-000E | 制造商:Avago Technologies 功能描述:GATE DRIVE OPTOCOUPLERLF - LEAD FREE VE |
| HCPL-316J-500E | 功能描述:邏輯輸出光電耦合器 2.0A IGBT Gate Drive RoHS:否 制造商:Fairchild Semiconductor 絕緣電壓:4243 Vrms 輸出類型:Push-Pull 最大傳播延遲時(shí)間:500 ns 最大正向二極管電壓: 最大反向二極管電壓: 最大正向二極管電流: 最大連續(xù)輸出電流:2.5 A 最大功率耗散:100 mW 最大工作溫度:+ 100 C 最小工作溫度:- 40 C 封裝 / 箱體:SO-16 封裝:Tube |
| HCPL-3180 | 功能描述:高速光耦合器 2.0A IGBT Gate Drive RoHS:否 制造商:Avago Technologies 電流傳遞比: 最大波特率: 最大正向二極管電壓:1.75 V 最大反向二極管電壓:5 V 最大功率耗散:40 mW 最大工作溫度:+125 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-5 封裝:Tube |
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