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PDF ACPL-W314 Data sheet ( Hoja de datos )
| Número de pieza | ACPL-W314 | |
| Descripción | 0.6 Amp Output Current IGBT Gate Driver Optocoupler | |
| Fabricantes | Avago Technologies | |
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ACPL-P314 and ACPL-W314
0.6 Amp Output Current IGBT Gate Driver Optocoupler
Data Sheet
Description
The ACPL-P314/W314 consists of a GaAsP LED optically
coupled to an integrated circuit with a power output
stage. These optocouplers are ideally suited for driving
power IGBTs and MOSFETs used in motor control
inverter applications. The high operating voltage range
of the output stage provides the drive voltages
required by gate controlled devices. The voltage and
current supplied by this optocoupler makes it ideally
suited for directly driving small or medium power
IGBTs.
Functional Diagram
ANODE 1
N.C. 2
CATHODE 3
SHIELD
6 VCC
5 VO
4 VEE
Truth Table
LED VO
OFF LOW
ON HIGH
Note: A 0.1 µF bypass capacitor
must be connected between
pins VCC and VEE.
Features
• High speed response.
• Ultra high CMR.
• Bootstrappable supply current.
• Available in Stretched SO-6 package
• Package Clearance/Creepage at 8mm (ACPL-W314)
• Safety Approval:
UL Recognized with 3750 Vrms for 1 minute per
UL1577.
CSA Approved.
IEC/EN/DIN EN 60747-5-2 Approved with VIORM =
630VPEAK for option 060.
Specifications
• 0.6 A maximum peak output current.
• 0.4 A minimum peak output current.
• 0.7 µs maximum propagation delay over
temperature range.
• ICC(max) = 3 mA maximum supply current.
• 10 kV/µs minimum common mode rejection (CMR)
at VCM = 1000 V.
• Wide VCC operating range: 10 V to 30 V over
temperature range.
• Wide operating temperature range: –40°C to 100°C.
Applications
• Isolated IGBT/Power MOSFET gate drive
• AC and brushless DC motor drives
• Industrial inverters
• Inverter for home appliances
• Induction cooker
• Switching Power Supplies (SPS)
CAUTION: It is advised that normal static precautions be taken
in handling and assembly of this component to prevent
damage and/or degradation which may be induced by ESD.
1 page  
Table 1. IEC/EN/DIN EN 60747-5-2 Insulation Characteristics* (ACPL-P314/W314 Option 060)
Description
Symbol Characteristic Unit
Installation classification per DIN VDE 0110/1.89, Table 1
for rated mains voltage ≤ 150Vrms
for rated mains voltage ≤ 300Vrms
for rated mains voltage ≤ 600Vrms
Climatic Classification
I - IV
I - III
I - II
55/100/21
Pollution Degree (DIN VDE 0110/1.89)
2
Maximum Working Insulation Voltage
Input to Output Test Voltage, Method b*
VIORM x 1.875=VPR, 100% Production Test with tm=1 sec, Partial discharge < 5 pC
Input to Output Test Voltage, Method a*
VIORM x 1.5=VPR, Type and Sample Test, tm=60 sec, Partial discharge < 5 pC
Highest Allowable Overvoltage (Transient Overvoltage tini = 10 sec)
Safety-limiting values - maximum values allowed in the event of a failure.
Case Temperature
Input Current**
Output Power**
Insulation Resistance at TS, VIO = 500 V
VIORM
VPR
VPR
VIOTM
630
1181
945
6000
TS
IS, INPUT
PS, OUTPUT
RS
175
230
600
>109
Vpeak
Vpeak
Vpeak
Vpeak
°C
mA
mW
* Refer to the optocoupler section of the Isolation and Control
Components Designer’s Catalog, under Product Safety
Regulations section, (IEC/EN/DIN EN 60747-5-2) for a detailed
description of Method a and Method b partial discharge test
profiles.
** Refer to the following figure for dependence of PS and IS on
ambient temperature.
Table 2. Insulation and Safety Related Specifications
Parameter
Minimum External Air Gap
(External Clearance)
Minimum External
Tracking (External Creepage)
Minimum Internal Plastic Gap
(Internal Clearance)
Symbol
L(101)
ACPL-
P314 W314
7.0 8.0
L(102)
8.0 8.0
0.08 0.08
Minimum Internal Tracking
(Internal Creepage)
Tracking Resistance
(Comparative Tracking Index)
Isolation Group
CTI
NA NA
>175 >175
IIIa IIIa
Units
Conditions
mm Measured from input terminals to output
terminals, shortest distance through air.
mm Measured from input terminals to output
terminals, shortest distance path along body.
mm Through insulation distance conductor to
conductor, usually the straight line distance
thickness between the emitter and detector.
mm Measured from input terminals to output
terminals, along internal cavity.
V DIN IEC 112/VDE 0303 Part 1
Material Group (DIN VDE 0110, 1/89, Table 1)
5
5 Page 
Applications Information
Eliminating Negative IGBT Gate Drive
To keep the IGBT firmly off, the ACPL-P314/W314 has
a very low maximum VOL specification of 1.0 V.
Minimizing Rg and the lead inductance from the ACPL-
P314/W314 to the IGBT gate and emitter (possibly by
mounting the ACPL-P314/W314 on a small PC board
directly above the IGBT) can eliminate the need for
negative IGBT gate drive in many applications as shown
in Figure 19. Care should be taken with such a PC board
design to avoid routing the IGBT collector or emitter
traces close to the ACPL-P314/W314 input as this can
result in unwanted coupling of transient signals into
the input of ACPL-P314/W314 and degrade
performance. (If the IGBT drain must be routed near
the ACPL-P314/W314 input, then the LED should be
reverse biased when in the off state, to prevent the
transient signals coupled from the IGBT drain from
turning on the ACPL-P314/W314.
Selecting the Gate Resistor (Rg)
Step 1: Calculate Rg minimum from the IOL peak
specification. The IGBT and Rg in Figure 19 can be
analyzed as a simple RC circuit with a voltage supplied
by the ACPL-P314/W314.
Rg
≥
VCC − VOL
IOLPEAK
=
24 − 5
0.6
= 32Ω
The VOL value of 1 V in the previous equation is the
VOL at the peak current of 0.6A. (See Figure 6).
Figure 20. Energy Dissipated in the ACPL-P314/W314 and for Each
IGBT Switching Cycle.
Step 2: Check the ACPL-P314/W314 power dissipation
and increase Rg if necessary. The ACPL-P314/W314 total
power dissipation (PT) is equal to the sum of the emitter
power (PE) and the output power (PO).
PT = PE + PO
PE = IF • VF • DutyCycle
( )PO
= P + P = I • V + EO(BIAS)
O(SWITCHING)
CC
CC
SW
Rg ;Qg
•f
( ) ( )= ICCBIAS + KICC • Qg • f • VCC + ESW Rg ;Qg • f
where KICC · Qg · f is the increase in ICC due to switching
and KICC is a constant of 0.001 mA/(nC*kHz). For the
circuit in Figure 19 with IF (worst case) = 10 mA, Rg =
32 Ω, Max Duty Cycle = 80%, Qg = 100 nC, f = 20 kHz
and TAMAX = 85°C:
PE = 10mA •1.8V • 0.8 = 14mW
PO = (3mA + (0.001mA nC • kHz)• 20kHz •100nC)• 24V +
( )0.4µ.• 20kHz = 128mW ≤ 250mW PO(MAX)@85°C
+5 V
CONTROL
INPUT
74XXX
OPEN
COLLECTOR
270 Ω
1
2
3
ACPL-P314/W314
The value of 3 mA for ICC in the previous equation is
the max. ICC over entire operating temperature range.
Since PO for this case is less than PO(MAX), Rg = 32 Ω is
alright for the power dissipation.
6
0.1 µF
5
4
+ VCC = 15V
- Rg
Q1
Q2
+ HVDC
3-PHASE
AC
- HVDC
Figure 19. Recommended LED Drive and Application Circuit for ACPL-P314/W314
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet ACPL-W314.PDF ] | |
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