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PDF STK415-140-E Data sheet ( Hoja de datos )
| Número de pieza | STK415-140-E | |
| Descripción | 2-Channel Power Switching Audio Power IC | |
| Fabricantes | Sanyo Semicon Device | |
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Ordering number : EN*A1501
www.DataSheet4U.com
Thick-Film Hybrid IC
STK415-140-E 2-Channel Power Switching
Audio Power IC, 120W+120W
Overview
The STK415-140-E is a class H audio power amplifier hybrid IC that features a built-in power supply switching circuit.
This IC provides high efficiency audio power amplification by controlling (switching) the supply voltage supplied to the
power devices according to the detected level of the input audio signal.
Applications
• Audio power amplifiers.
Features
• Pin-to-pin compatible outputs ranging from 80W to 180W.
• Can be used to replace the STK416-100 series (3-channel models) and the class-AB series (2, 3-channel models) due to
its pin compatibility.
• Pure complementary construction by new Darlington power transistors
• Output load impedance: RL = 8Ω to 4Ω supported
• Using insulated metal substrate that features superlative heat dissipation characteristics that are among the highest in the
industry.
Series Models
Output 1 (10%/1kHz)
Output 2 (0.8%/20Hz to 20kHz)
Max. rated VH (quiescent)
Max. rated VL (quiescent)
Recommended operating VH (8Ω)
Recommended operating VL (8Ω)
Dimensions (excluding pin height)
STK415-090-E
80W×2 channels
50W×2 channels
±60V
±41V
±37V
±27V
STK415-100-E
STK415-120-E
STK415-130-E
90W×2 channels 120W×2 channels 150W×2 channels
60W×2 channels
80W×2 channels 100W×2 channels
±65V
±73V
±80V
±42V
±45V
±46V
±39V
±46V
±51V
±29V
±32V
±34V
64.0mm×31.1mm×9.0mm
STK415-140-E
180W×2 channels
120W×2 channels
±80V
±51V
±52V
±32V
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
70809HKIM No. A1501-1/12
1 page  
STK415-140-E
Recommended Values for Application Parts (for the test circuit) www.DataSheet4U.com
Symbol
R01, R02
R03, R04
R05, R06
R08, R09
Recommended
Value
1.5kΩ
100Ω/1W
56kΩ
4.7Ω/1W
Description
Determine the current flowing into the power switching
circuit (comparator), (3mA to 10mA at VH power
switching)
Ripple filtering resistors
(Used with C05 and C06 to form a ripple filter.)
Input bias resistors
(Virtually determine the input impedance.)
Oscillation prevention resistor
Larger than Recommended
Smaller than
Value
Recommended Value
Power holding circuit
Power switching circuit
remains active at lower
activates at higher
frequencies.
frequencies.
Decreased pass-through
Increased pass-through
current at high frequencies. current at high frequencies.
VN offset
(Ensure R05=R18, R06=R19 when changing.)
--
R11, R12
4.7Ω
Oscillation prevention resistor
--
R14,R15
R18, R19
R21, R22
560Ω
56kΩ
1kΩ
Used with R18 and R19 to determine the voltage gain
VG. (VG should desirably be determined by the R14
and R15 value.)
Used with R14 and R15 to determine the voltage gain
VG.
Input filtering resistor
Likely to oscillate
(VG<40dB)
-
-
None
-
-
R24, R26
R30
0.22Ω±10%,
5W
Remarks *7
Output emitter resistors
Decrease in maximum
Likely to cause thermal-
(Use of cement resistor is desirable)
output power
runaway.
Use a limiting resistor according to the voltage applied to the standby pin so that it remains within the rating.
C01, C02
C03, C04
C05, C06
C07, C08
100μF/
100V
100μF/
50V
100μF/
100V
3pF
Oscillation prevention capacitors.
• Insert the capacitors as close to the IC as possible to
decrease the power impedance for reliable IC
operation (use of electrolytic capacitors are
desirable).
Oscillation prevention capacitors.
• Insert the capacitors as close to the IC as possible to
decrease the power impedance for reliable IC
operation (use of electrolytic capacitors are
desirable).
Decoupling capacitors.
Eliminate ripple components that pass into the input
side from the power line.
(Used with R03 and R04 to form a ripple filter.)
Oscillation prevention capacitor
--
--
Increase in ripple components that pass into the input side
from the power line.
Likely to oscillate
C10, C11
C13, C14
C16, C17
C19, C20
C22, C23
0.1μF
22μF/
10V
2.2μF/
50V
470pF
100pF
Oscillation prevention capacitor
(Mylar capacitors are recommended.)
NF capacitor
(Changes the low cutoff frequency;
ex/fL=1/2π •C13•R14)
Input coupling capacitor (block DC current)
Likely to oscillate
Increase in low-frequency
voltage gain, with higher
pop noise at power-on.
-
Input filter capacitor
(Used with R21 and R22 to form a filter that suppresses
high-frequency noises.)
Oscillation prevention capacitor
-
Likely to oscillate.
Decrease in low-frequency
voltage gain
-
-
D01, D02
D03, D04
L01, L02
18V
3A/60V
3μH
Determine the offset voltage at VL↔VH power.
Reverse current prevention diodes
(FRD is recommended.)
Oscillation prevention inductance
Decreased distortion at
power switching time
-
None
Increased distortion at
power switching time.
-
Likely to oscillate.
No. A1501-5/12
5 Page 
STK415-140-E
The protection circuit application for the STK415-100sr consists of the following blocks (blocks w(1w) wto.D(4a)t)a.Sheet4U.com
(1) Standby control circuit block
(2) Load short-circuit detection block
(3) Latch-up circuit block
(4) DC voltage protection block
1) Standby control circuit block
Concerning pin 17 reference voltage VST
<1> Operation mode
The switching transistor of the predriver IC turns on when the pin 17 reference voltage, VST, becomes greater
than or equal to 2.5V, placing the amplifier into the operation mode.
Example: When VST (min.) = 2.5V
I1 is approximately equal to 0.40mA since VST = (*2) × IST + 0.6V → 2.5V = 4.7kΩ × IST + 0.6V.
<2> Standby mode
The switching transistor of the predriver IC turns off when the pin 17 reference voltage, VST, becomes lower
than or equal to 0.6V (typ. 0V), placing the amplifier into the standby mode.
Example: When VST = 0.6V
I1 is approximately equal to 0mA since VST = (*2) × IST + 0.6V → 0.6V = 4.7kΩ × IST + 0.6V.
(*1) Limiting resistor
Determine the value of R1 so that the voltage VST applied to the standby pin (pin 17) falls within the rating
(+2.5V to 5.5V (typ. 3.0V)).
(*2) The standby control voltage must be supplied from the host including microcontrollers.
(*3) A 4.7kΩ limiting resistor is also incorporated inside the hybrid IC (at pin 17).
2) Load short-circuit detection block
Since the voltage between point B and point C is less than 0.6V in normal operation mode (VBE < 0.6V) and TR1 (or
TR2) is not activated, the load short-circuit detection block does not operate.
When a load short-circuit occurs, however, the voltage between point B and point C becomes larger than 0.6V,
causing TR1 (or TR2) to turn on (VBE > 0.6V), and current I2 to flows.
3) Latch-up circuit block
TR3 is activated when I2 is supplied to the latch-up circuit.
When TR3 turns on and current I3 starts flowing, VST goes down to 0V (standby mode), protecting the power
amplifier.
Since TR3 and TR4 configure a thyristor, once TR3 is activated, the IC is held in the standby mode.
To release the standby mode and reactivate the power amplifier, it is necessary to set the standby control voltage (*2)
temporarily low (0V). Subsequently, when the standby control is returned to high, the power amplifier will become
active again.
(*4) The I3 value varies depending on the supply voltage. Determine the value of R2 using the formula below, so that
I1 is equal to or less than I3.
I1 ≤ I3 = VCC/R2
4) DC offset protection block
The DC offset protection circuit is activated when ±0.5V (typ) voltage is applied to either "OUT CH1" or "OUT
CH2," and the hybrid IC is shut down (standby mode).
To release the IC from the standby mode and reactivate the power amplifier, it is necessary to set the standby control
voltage temporarily low (0V).
Subsequently, when the standby control is returned to high (+5V, for example), the power amplifier will become
active again.
The protection level must be set using the 82kΩ resistor. Furthermore, the time constant must be determined using
22μ//22μ capacitors to prevent the amplifier from malfunctioning due to the audio signal.
No. A1501-11/12
11 Page | ||
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