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PDF ACPL-K34T Data sheet ( Hoja de datos )
| Número de pieza | ACPL-K34T | |
| Descripción | Automotive 2.5 A Peak High Output Current MOSFET Gate Drive Optocoupler | |
| Fabricantes | AVAGO | |
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ACPL-K34T
Automotive 2.5 A Peak High Output Current MOSFET Gate Drive Optocoupler
with Rail-to-Rail Output Voltage in Stretched SO8
Data Sheet
Lead (Pb) Free
RoHS 6 fully
compliant
RoHS 6 fully compliant options available;
-xxxE denotes a lead-free product
Description
Avago's 2.5 Amp Automotive R2Coupler Gate Drive Op-
tocoupler contains an AlGaAs LED, which is optically cou-
pled to an integrated circuit with a power output stage.
The ACPL-K34T features fast propagation delay and tight
timing skew, is ideally designed for driving power MOS-
FETs used in AC-DC and DC-DC converters. The high oper-
ating voltage range of the output stage provides the drive
voltages required by gate controlled devices. The voltage
and high peak output current supplied by this optocou-
pler make it ideally suited for direct driving power MOS-
FETs at high frequency for high efficiency conversion.
Avago R2Coupler isolation products provide reinforced
insulation and reliability that delivers safe signal isolation
critical in automotive and high temperature industrial ap-
plications.
Functional Diagram
ANODE 1
8 VCC
NC 2
CATHODE 3
7 VOUT
6 NC
NC 4
SHIELD
5 VEE
Figure 1. ACPL-K34T Functional Diagram
Note: Minimum 1 µF bypass capacitor must be connected between pins
VCC and VEE.
Truth Table
LED
OFF
ON
ON
VCC – VEE
0 – 20V
<VUVLO-
>VUVLO+
VOUT
LOW
LOW
HIGH
Features
• Qualified to AEC-Q100 Grade 1 Test Guidelines
• Automotive temperature range: -40 °C to 125 °C
• Peak output current: 2.0 A min.
• Rail-to-rail output voltage
• Propagation delay: 110 ns max.
• Dead time distortion: +50 ns/-40 ns
• LED current input drive with hysteresis
• Common Mode Rejection (CMR): 50 kV/µs min. at VCM
= 1500 V
• Low supply current allow bootstrap half-bridge
topology: ICC = 3.9 mA max.
• Under Voltage Lock-Out (UVLO) protection with
hysteresis for power MOSFET
• Wide operating VCC range: 10 V to 20 V
• Safety Approvals:
- UL Recognized 5000 VRMS for 1 min
- CSA
- IEC/EN/DIN EN 60747-5-5 VIORM = 1140 Vpeak
Applications
• Hybrid Power Train DC/DC Converter
• EV/PHEV Charger
• Automotive Isolated MOSFET Gate Drive
• AC and Brushless DC motor drives
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  
Switching Specifications (AC)
Unless otherwise noted, all Minimum/Maximum specifications are at Recommended Operating Conditions.
All typical values are at TA = 25 °C, VCC - VEE = 10 V, VEE = Ground.
Parameter
Symbol Min. Typ. Max. Units Test Conditions
Propagation Delay Time
to High Output Level
Propagation Delay Time
to Low Output Level
Pulse Width Distortion
(tPHL-tPLH)
tPLH
tPHL
PWD
30 60 110 ns
30 60 110 ns
-40 0
40 ns
VCC = 10 V
RG = 4.7Ω, CL = 10 nF,
f = 200 kHz ,
Duty Cycle = 50%
Vin = 4.5 V – 5.5 V,
Rin = 350 Ω
Dead Time Distortion Caused
by Any Two Parts
(tPLH-tPHL)
DTD
-40
50 ns
Rise Time
Fall Time
tR
10 30 ns
VCC = 10 V, CL = 1 nF,
tF
10 30 ns
f = 200 kHz ,
Duty Cycle = 50%
Vin = 4.5 V– 5.5 V,
Rin = 350 Ω
Output High Level Common |CMH| 50 >75
Mode Transient Immunity
kV/µs TA = 25 °C, VCC = 20 V,
VCM=1500 V, with split resistors
Output Low Level Common
Mode Transient Immunity
|CML|
50 >75
kV/µs
Fig.
9,12,14
10,12,14
11
13, 14
15
Note
7
8
9
10, 11
10, 12
Package Characteristics
Unless otherwise noted, all Minimum/Maximum specifications are at Recommended Operating Conditions. All typical
values are at TA = 25°C.
Parameter
Symbol Min. Typ. Max. Units Test Conditions
Fig. Note
Input-Output Momentary
Withstand Voltage*
VISO 5000
VRMS
RH < 50%,
t = 1 min, TA = 25 °C
13, 14
Input-Output Resistance
RI-O
1014
Ω VI-O = 500 VDC
14
Input-Output Capacitance
CI-O
0.6 pF f =1 MHz
* The Input-Output Momentary Withstand Voltage is a dielectric voltage rating that should not be interpreted as an input-output continuous
voltage rating. For the continuous voltage rating, refer to your equipment level safety specification or Avago Technologies Application Note 1074
entitled “Optocoupler Input-Output Endurance Voltage.”
5
5 Page 
Bypass and Reservoir Capacitors
Supply bypass capacitors are necessary at the input buffer and ACPL-K34T output supply pin. A ceramic capacitor with
the value of 0.1 µF is recommended at the input buffer to provide high frequency bypass, which also helps to improve
CMR performance. At the output supply pin (VCC – VEE), it is recommended to use a 10 µF, low ESR and low ESL capacitor
as a charge reservoir to supply instant driving current to MOSFET at VOUT during switching.
VDD1
0.1 µF
ISOLATION
VCC
VDD1
0.1 µF
ISOLATION
VCC
VDD1 Rin1 AN
VDD1 Rin1 AN
VOUT V OUT
CA
Ro Rin2
10 µF
VEE
CA
Ro Rin2
10 µF
V EE
VDD1 = 5 V ± 10%
ACPL-K34T
Ratio Rin1 : (Rin2+Ro) = 1.5:1
Recommended Ro+Rin1+Rin2 = 350 Ω
Figure 17. Recommended non-inverting drive circuit
VDD1 = 5 V ± 10%
Ratio Rin1 : (Rin2+Ro) = 1.5:1
Recommended Ro+Rin1+Rin2 = 350 Ω
ACPL-K34T
Figure 18. Recommended inverting drive circuit
VDD1
0.1 µF
AN
ISOLATION
Rin CA
VCC
VOUT
10 µF
VEE
VDD1
0.1 µF
AN
ISOLATION
Rin CA
ACPL-K34T
Figure 19(a)
Figure 19(b)
Figure 19(a) and Figure 19(b). Not recommended – Open drain/open collector drive circuit
ACPL-K34T
VCC
VOUT
10 µF
VEE
VDD1
0.1 µF
Rin1 AN
M1
ISOLATION
Rin2 CA
VCC
VOUT
10 µF
VEE
VDD1
0.1 µF
Rin1 AN
Q1
ISOLATION
Rin2 CA
ACPL-K34T
VDD1 = 5 V ± 10%
Ratio Rin1 : Rin2 = 1.5:1
Recommended Rin1+Rin2 = 350 Ω
ACPL-K34T
VDD1 = 5 V ± 10%
Ratio Rin1 : Rin2 = 1.5:1
Recommended Rin1+Rin2 = 350 Ω
Figure 20(a)
Figure 20(b)
Figure 20(a) and Figure 20(b). Alternative LED drive circuits to replace Figure 19(a) and 19(b)
VCC
VOUT
10 µF
VEE
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet ACPL-K34T.PDF ] | |
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