SANYO STK400-690

Ordering number : EN4830A
Thick Film Hybrid IC
STK400-020
3-Channel AF Power Amplifier (Split Power Supply)
(15 W + 15 W +15 W min, THD = 0.4 %)
Overview
Package Dimensions
Now, thick-film audio power amplifier ICs are available
with pin-compatibility to permit a single PCB to be
designed and amplifier output capacity changed simply by
installing a hybrid IC. This new series was developed
with this kind of pin-compatibility to ensure integration
between systems everywhere. With this new series of IC,
even changes from 3-channel amplifier to 2-channel
amplifiers are possible using the same PCB. In addition,
this new series of ICs has a 6/3 Ω drive in order to support
the low impedance of modern speakers.
unit : mm
4086A
[STK400-020]
Features
• Pin-compatible
STK400-000 series (3-channel, single package)
➙
STK401-000 series (2-channel, single package)
• Output load impedance RL=6 Ω/3 Ω supported
• New pin assignment
To simplify input/output pattern layout and minimize
the effects of pattern layout on operational
characteristics, pin assignments are grouped into blocks
consisting of input, output and power systems.
• Few external circuits
Compared to those series used until now, capacitors and
bootstrap resistors for external circuits can be greatly
reduced.
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Thermal resistance
Symbol
Conditions
Ratings
VCC max
θj-c
Per power transistor
Unit
±29
V
2.1
°C/W
Junction temperature
Tj
150
°C
Operating substrate temperature
Tc
125
°C
–30 to +125
°C
Storage temperature range
Tstg
Permissible load short time
ts
VCC = ±20 V, RL = 6 Ω, f = 50 Hz, PO = 15 W
1
s
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
N3096 HA (OT)/D2894 TH(OT) No. 4830-1/10
STK400-020
Operating Characteristics at Ta = 25°C, RL = 6 Ω, Rg = 600 Ω, VG = 40 dB, RL (noninductive)
Parameter
Symbol
Quiescent current
Output power
Total harmonic distortion
ICCO
Conditions
min
typ
VCC =± 24 V
30
90
PO (1)
VCC = ±20 V, f = 20 Hz to 20 kHz, THD = 0.4%
15
20
PO (2)
VCC = ±16 V, f = 1 kHz, THD = 1.0%, RL = 3 Ω
15
20
THD (1)
VCC = ±20 V, f = 20 Hz to 20 kHz, PO = 1.0 W
THD (2)
VCC = ±20 V, f = 1 kHz, PO = 5.0 W
Frequency response
Input impedance
fL, fH
ri
VCC = ±20 V, f = 1 kHz, PO = 1.0 W
VNO
VCC = ±24 V, Rg = 10 kΩ
Neutral voltage
VN
VCC = ±24 V
Unit
mA
W
W
0.4
+0
VCC = ±20 V, PO = 1.0 W, –3 dB
Output noise voltage
max
150
%
20 to 50 k
Hz
55
–70
%
0.02
0
kΩ
1.2
mVrms
+70
mV
Notes
• Use rated power supply for testing unless otherwise specified.
• When measuring permissible load short time and output noise voltage, use transformer power supply indicated below.
• Output noise voltage is represented by the peak value rms (VTVM) for mean reading. Use an AC stabilized power
supply (50 Hz) on the primary side to eliminate the effect of AC flicker noise.
Internal Equivalent Circuit
No. 4830-2/10
STK400-020
Pattern Example for PCB Used with Either 2- or 3-Channel Amplifiers
Sample Application Circuit
No. 4830-3/10
STK400-020
Description of External Circuits
C1, 11, 21
For input coupling capacitor. Used for current blocking. When capacitor reactance with low frequency is increased, the reactance value
should be reduced in order to reduce the output noise from the signal resistance dependent 1/f noise. In response to the popping noise
which occurs when the system power is turned on, C1 and C11 which determine the decay time constant on the input side are
increased while C3, C13 and C23 on the NF side are decreased.
C2, 12, 22
For input filter capacitor. Permits high-region noise reduction by utilizing filter constructed with R1, R11 and R21.
C3, 13, 23
For NF capacitor. This capacitor determines the decline of the cutoff frequency and is calculated according to the following equation.
fL =
1
2π X C3 (13, 23,) X R3 (13, 23)
For the purpose of achieving voltage gains prior to reduction, it is best that C3, C13 and C23 are large. However, because the shock
noise which occurs when the system power is turned on tends to increase, values larger than those absolutely necessary should be
avoided.
C5, 15, 25
For oscillation prevention capacitor. A Mylar capacitor with temperature and frequency features is recommended.
C6, 7
For oscillation prevention capacitor. To ensure safe IC functioning, the capacitor should be installed as close as possible to the IC
power pin to reduce power impedance. An electrolytic capacitor is good.
C8, 9, 28, 29
For decoupling capacitor. Reduces shock noise during power-up using decay time constant circuits with R8, R9, R28 and R29 and
eliminates components such as ripples crossing over into the input side from the power line.
R1, 11, 21
For input filter applied resistor.
R2, 12, 22
For input bias resistor. The input pin is biased to zero potential. Input impedance is mostly decided with this resistance value.
R3, 13, 23
R4, 14, 24
For resistors to determine voltage gain (VG). We recommend a VG = 40 dB using R3, R13, R23 = 560Ω and R4, R14 and R24 = 56Ω.
VG adjustments are best performed using R3, R13 and R23. When using R4, R14 and R24 for such purposes, R4, R14 and R24
should be set to equal R2, R12 and R22 in order to establish a stable VN balance.
R5, 15, 25
For oscillation prevention resistor.
R6, 16, 26
For oscillation prevention resistor. This resistor’s electrical output resides in the signal frequency and is calculated according to the
following formula.
VCC max/√2
2
P R6 (16, 26) =
× R6 (16, 26)
1/2π fC5 (15, 25) + R6 (16, 26)
(
)
f = output signal frequency upper limit
R8, 9, 28, 29
L1, 2, 3
For ripple filter applied resistor. PO max, ripple rejection and power-up shock noise are modified according to this value. Set the
electrical output of these resistors while keeping in mind the flow of peak current during recharging to C8, C9, C28 and C29 which
function as pre-drive TR control resistors during load shorts.
For oscillation prevention coil. Compensates phase dislocation caused by load capacitors and ensures stable oscillation.
No. 4830-4/10
STK400-020
Series Configuration
STK400-000, STK400-200 series
(3-channel identical output)
IC name
THD
(%)
IC name
THD
(%)
STK401-000, STK401-200 series (2-channel)
Fixed
standard
output
THD
(%)
IC name
IC name
THD
(%)
Fixed
standard
output
Supply voltage (V)
VCC max1
VCC max2
VCC1
VCC2
STK400-010
STK400-210
10 W × 3
STK401-010
STK401-210
10 W × 2
—
±26.0
±17.5
±14.0
STK400-020
STK400-220
15 W × 3
STK401-020
STK401-220
15 W × 2
—
±29.0
±20.0
±16.0
STK400-030
STK400-230
20 W × 3
STK401-030
STK401-230
20 W × 2
—
±34.0
±23.0
±19.0
STK400-040
STK400-240
25 W × 3
STK401-040
STK401-240
25 W × 2
—
±36.0
±25.0
±21.0
STK400-050
STK400-250
30 W × 3
STK401-050
STK401-250
30 W × 2
—
±39.0
±26.0
±22.0
STK400-060
STK400-260
35 W × 3
STK401-060
STK401-260
35 W × 2
—
±41.0
±28.0
±23.0
STK400-070
STK400-080
0.4
STK400-270
STK400-280
0.08
40 W × 3
STK401-070
45 W × 3
STK401-080
0.4
STK401-270
STK401-280
0.08
40 W × 2
—
±44.0
±30.0
±24.0
45 W × 2
—
±45.0
±31.0
±25.0
STK400-090
STK400-290
50 W × 3
STK401-090
STK401-290
50 W × 2
—
±47.0
±32.0
±26.0
STK400-100
STK400-300
60 W × 3
STK401-100
STK401-300
60 W × 2
—
±51.0
±35.0
±27.0
STK400-110
STK400-310
70 W × 3
STK401-110
STK401-310
70 W × 2
±56.0
—
±38.0
—
STK401-120
STK401-320
80 W × 2
±61.0
—
±42.0
—
STK401-130
STK401-330
100 W × 2
±65.0
—
±45.0
—
STK401-140
STK401-340
120 W × 2
±74.0
—
±51.0
—
STK400-400, STK400-600 series
(3-channel differing output)
IC name
THD
(%)
IC name
STK400-450
STK400-650
STK400-460
STK400-660
STK400-470
STK400-670
STK400-480
STK400-680
STK400-490
0.4
STK400-690
STK400-500
STK400-700
STK400-510
STK400-710
STK400-520
STK400-720
STK400-530
STK400-730
VCC max1
VCC max2
VCC1
VCC2
Fixed
standard
output
THD
(%)
0.08
Supply voltage (V)
VCC max1
VCC max2
VCC1
VCC2
C ch
30 W
—
±39.0
±26.0
±22.0
L, R ch
15 W
—
±29.0
±20.0
±16.0
C ch
35 W
—
±41.0
±28.0
±23.0
L, R ch
15 W
—
±29.0
±20.0
±16.0
C ch
40 W
—
±44.0
±30.0
±24.0
L, R ch
20 W
—
±34.0
±23.0
±19.0
C ch
45 W
—
±45.0
±31.0
±25.0
L, R ch
20 W
—
±34.0
±23.0
±19.0
C ch
50 W
—
±47.0
±32.0
±26.0
L, R ch
25 W
—
±36.0
±25.0
±21.0
C ch
60 W
—
±51.0
±35.0
±27.0
L, R ch
30 W
—
±39.0
±26.0
±22.0
C ch
70 W
±56.0
—
±38.0
—
L, R ch
35 W
—
±41.0
±28.0
±23.0
C ch
80 W
±61.0
—
±42.0
—
L, R ch
40 W
—
±44.0
±30.0
±24.0
C ch 100 W
L, R ch
50 W
±65.0
—
±45.0
—
—
±47.0
±32.0
±26.0
RL = 6 Ω
RL = 6 Ω to 3 Ω operation
RL = 6 Ω operation
RL = 3 Ω operation
No. 4830-5/10
STK400-020
Example of Set Design for Common PCB
No. 4830-6/10
STK400-020
External Circuit Diagram
Heat Radiation Design Considerations
The radiator thermal resistance θc-a required for total substrate power dissipation Pd in the STK400-020 is determined as
follows:
Condition 1: IC substrate temperature Tc not to exceed 125°C.
Pd x θc-a+Ta <125°C ······························· (1)
where Ta is set assured ambient temperature.
Condition 2: Power transistor junction temperature Tj not to exceed 150°C.
Pd x θc-a+Pd/N x θj-c+Ta<150°C·············(2)
where N is the number of power transistors and θj-c the thermal resistance per power transistor chip.
However, power transistor power dissipation is Pd equally divided by N units.
Expressions (1) and (2) can be rewritten based on θc-a to yield:
θc-a<(125–Ta)/Pd ······································(1)'
θc-a<(150–Ta)/Pd–θj-c/N··························(2)'
The required radiator thermal resistance will satisfy both of these expressions.
From expressions (1)' and (2)', the required radiator thermal resistance can be determined once the following
specifications are known:
•
•
•
Supply voltage
VCC
Load resistance
RL
Assured ambient temperature Ta
The total substrate power dissipation when STK400-020 VCC is ±20 V and RL is 6 Ω, for a continuous sine wave signal,
is a maximum of 41 W (Fig. 1). In general, when this sort of continuous signal is used for estimation of power
dissipation, the Pd used is 1/10th of PO max (slight variation depending on safety standard).
Pd=23.5 W (1/10 PO max=during 1.5 W)
No. 4830-7/10
STK400-020
The STK400-020 has six power transistors, so the thermal resistance per transistor θj-c is 2.1°C / W. With an assured
ambient temperature Ta of 50°C, the required radiator thermal resistance θc-a would be as follows:
From expression (1)' θc-a < (125–50)/23.5
< 3.19
From expression (2)' θc-a < (150–50)/23.5 – 2.1/6
< 5.84
To satisfy both, 3.19°C/W is the required radiator thermal resistance.
Figure 2 illustrates Pd - PO when the VCC of STK400-020 is ±16 V and RL is functioning at 3 Ω.
Pd = 26.5 W (1/10 PO max = during 1.5 W)
From expression (1)' θc-a < (125–50) – 26.5
< 2.83
From expression (2)' θc-a < (150-50)/26.5 – 2.1/6
< 3.42
To satisfy both, 2.83°C / W is the required radiator thermal resistance. This design example is based on a fixed voltage
supply, and will require verification within your specific set environment.
No. 4830-8/10
STK400-020
No. 4830-9/10
STK400-020
■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace
equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of
which may directly or indirectly cause injury, death or property loss.
■ Anyone purchasing any products described or contained herein for an above-mentioned use shall:
➀ Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and
distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all
damages, cost and expenses associated with such use:
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SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.
■ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for
volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied
regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of August, 1997. Specifications and information herein are subject to
change without notice.
No. 4830-10/10