ACPL-K342-060E Avago Technologies US Inc., ACPL-K342-060E Datasheet - Page 19

• Manufacturer Part Number: ACPL-K342-060E
• Description: Logic Output Optocouplers Optocoupler
• Manufacturer: Avago Technologies US Inc.
• Series: -r
• Type: Gate Driver, Miller Clampr

Specifications of ACPL-K342-060E

• Fall Time: 18 ns
• Rise Time: 22 ns
• Maximum Propagation Delay Time: 0.35 us
• Maximum Forward Diode Voltage: 1.95 V
• Minimum Forward Diode Voltage: 1.2 V
• Maximum Reverse Diode Voltage: 5 V
• Maximum Continuous Output Current: 2.5 A
• Maximum Power Dissipation: 255 mW
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Package / Case: SOIC-8
• No. Of Channels: 1
• Isolation Voltage: 5kV
• Optocoupler Output Type: Gate Drive
• Input Current: 230mA
• Output Voltage: 30V
• Opto Case Style: SOIC
• No. Of Pins: 8
• Peak Reflow Compatible (260 C): Yes
• Rohs Compliant: Yes
• Voltage - Isolation: 5000Vrms
• Input Type: DC
• Voltage - Supply: 15 V ~ 30 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Leaded Process Compatible: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LED Input Current Hysteresis
The detector has optical receiver input stage with built in
Schmitt trigger to provide logic compatible waveforms,
eliminating the need for additional wave shaping. The
hysteresis (Figure 12) provides differential mode noise
immunity and minimizes the potential for output signal
chatter.
Under Voltage Lockout
The ACPL-H342 Under Voltage Lockout (UVLO) feature is
designed to prevent the application of insufficient gate
voltage to the IGBT by forcing the ACPL-H342 output low
during power-up. IGBTs typically require gate voltages of
15 V to achieve their rated V
below 13 V typically, the V
matically, 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
itive-going UVLO threshold), the UVLO clamp is released
to allow the device output to turn on in response to input
signals.
Thermal Model for ACPL-H342/K342 Stretched SO8
Package Optocoupler
Definitions:
R
to heating of LED
R
to heating of Detector (Output IC)
R
(Output IC) due to heating of LED.
R
(Output IC) due to heating of Detector (Output IC).
P
P
T
T
T
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Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries.
Data subject to change. Copyright © 2005-2010 Avago Technologies. All rights reserved.
AV02-2526EN - September 9, 2010
A
1
2
11
12
21
22
1
2
: Junction temperature of LED (°C).
: Junction temperature of Detector (°C).
: Ambient temperature.
: Power dissipation of LED (W).
: Power dissipation of Detector / Output IC (W).
: Junction to Ambient Thermal Resistance of LED due
: Junction to Ambient Thermal Resistance of LED due
: Junction to Ambient Thermal Resistance of Detector
: Junction to Ambient Thermal Resistance of Detector
CC
) is applied. Once V
CE(ON)
CE(ON)
CC
exceeds V
voltage. At gate voltages
voltage increases dra-
UVLO+
(the pos-
www.avagotech.com
Ambient Temperature: Junction to Ambient Thermal Re-
sistances were measured approximately 1.25cm above
optocoupler at ~23°C in still air
This thermal model assumes that an 8-pin single-channel
plastic package optocoupler is soldered into a 7.62 cm x
7.62 cm printed circuit board (PCB) per JEDEC standards.
The temperature at the LED and Detector junctions of the
optocoupler can be calculated using the equations below.
T
T
Using the given thermal resistances and thermal model
formula in this datasheet, we can calculate the junction
temperature for both LED and the output detector. Both
junction temperature should be within the absolute
maxi mum rating.
For example, given P
LED junction temperature,
T
= (311 * 0.045 + 111 * 0.210) + 85
= 122°C
Output IC junction temperature,
T
= (111 *0.045 + 168 * 0.210) + 85
= 125°C
T
layout and part placement.
Related Application Noted
AN5336 – Gate Drive Optocoupler Basic Design for IGBT/
MOSFET
AN1043 – Common-Mode Noise: Sources and Solutions
AN02-0310EN – Plastics Optocouplers Product ESD and
Moisture Sensitivity
Thermal Resistance
R
R
R
1
2
1
2
1
11
12
22
= (R
= (R
= (R
= (R
and T
, R
21
11
21
11
21
2
* P
* P
* P
x P
should be limited to 125°C based on the board
1
1
1
1
+ R
+ R
+ R
+ R
12
22
12
22
* P
* P
* P
x P
1
2
2
2
= 45 mW, P
2
) + T
) + T
) + T
) + T
A
A
A
A
2
=210 mW, Ta = 85°C:
°C/W
311
111
168
(1)
(2)