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Ordering number:ENN4897
Thick Film Hybrid IC
STK401-130
2ch AF Power Amplifier (Split Power Supply) (100W + 100W min, THD = 0.4%)
Overview
A major feature of Sanyo thick-film power amplifier ICs is that all ICs within a given product series are pin compatible. This allows users to construct a product line of amplifiers with differing power output capacities using the same PCB design by simply changing the hybrid IC used. Sanyo has now developed a new series that expands this intraseries pin compatibility to also provide compatibility between certain series. Adoption of the ICs in this new series also allows the development of both two- and three-channel amplifiers on the same PCB. Furthermore, this new series supports 3 and 6 drive to handle the recent trend toward lower impedance speakers.
Package Dimensions
unit:mm 4029
[STK401-130]
78.0 70.0 9.0
3.6 21.5
44.0
1
16 2.54 0.5 15×2.54=38.1 2.9 0.4 5.5 4.0
Features
· Pin compatible STK400-000 series (three channels/single package) STK401-000 series (two channels/single package) · Support for output load impedance of 3 or 6 · New pin assignment The new pin assignment groups the input, output, and power supply systems into separate blocks. This minimizes characteristic degradation due to problems with the PCB pattern layout. · Minimal number of required external components The bootstrap resistor and capacitor required in earlier series are no longer necessary.
(15.95)
SANYO : SIP16
Specifications
Maximum Ratings at Ta = 25°C
Parameter Maximum supply voltage Thermal resistance Junction temperature Operating substrate temperature Storage temperature Available time for load short-circuit Symbol VCC max j-c Tj Tc Tstg ts VCC=±45V, RL=6, f=50Hz, PO=100W Per power transistor Conditions Ratings ±65 1.0 150 125 30 to +125 0.5 Unit V
°C/W °C °C °C
26.5
s
Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other parameters) listed in products specifications of any and all SANYO products described or contained herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
93099TH (KT)/D2694TH (OT) No.48971/8
STK401-130
Operating Characteristics at Ta = 25°C, RL=6, Rg=600, VG=40dB, and with a noninductive load (RL)
Parameter Quiescent current Output power Total harmonic distortion Frequency response Input impedance Output noise voltage Neutral voltage Symbol ICCO PO THD1 THD2 fL, fH ri VNO VN VCC=±45V VCC=±45V, f=20Hz to 20kHz, THD=0.4% VCC=±45V, f=20Hz to 20kHz, PO=1.0W VCC=±45V, f=1kHz, PO=30W VCC=±45V, PO=1.0W, +0 dB 3 VCC=±45V, f=1kHz, PO=1.0W VCC=±54V, Rg=10k VCC=±54V 70 Conditions Ratings min 20 100 typ 60 110 0.4 0.02 20 to 50k 55 0 +70 max 100 Unit mA W % % Hz k 1.2 mVrms mV
Note. 1. Use a rated power supply for the test unless otherwise noted. 2. Use the specified transformer power supply shown in the figure when measuring the available time for load shorted and the output noise voltage. 3. The output noise voltage is the peak value measured with an averaging rms scale volt meter (VTVM). A 50 Hz AC stabilized power supply should be used to eliminate the effects fo AC primary line flicker noise when an AC power supply is used.
Specified Transformer Power Supply (MG-250 equivalent)
Internal Equivalent Circuit
No.48972/8
STK401-130
Sample PCB Pattern used with either Two- or Three-Channel Amplifiers
Copper (Cu) foil surface Pin 1 of STK401-000 series devices corresponds to pin 6 of STK400-000 series devices.
Sample Application Circuit
No.48973/8
STK401-130
External Component Descriptions
C1, C11 Input coupling capacitors. Used to block the DC component. Reducing the reactance value of these capacitors can reduce output noise, since output noise is exacerbated due to the 1/f noise signal source resistance dependencies if these capacitors have a large reactances at low frequencies. The impulse noise that occurs when power is first applied can be reduced by increasing the values of C1 and C11, and reducing the values of the NF side C3 and C13. Input filter capacitors. High band noise can be reduced by the filters formed by these capacitors and R1 and R11. NF capacitors. These capacitors determine the low band cutoff frequency. C3, C13
fL= 1 2 × C3 (13) × R3 (13)
C2, C12
Voltage gain can be acquired up to the low band by increasing the value of these capacitors. However, since this increases the impulse noise that occurs when power is applied, limit the values of these capacitors to what is actually required. C4, C14 C5, C15 Oscillation prevention capacitors. These capacitors increase stability at large outputs and high temperatures. Oscillation prevention capacitors. The use of Mylar capacitors with superlative temperature and frequency characteristics is recommended. Oscillation prevention capacitors. Insert these capacitors as close as possible to the IC power supply pins. They lower the power supply impedance and provide stabel IC operation. Electrolytic capacitors are recommended. Decoupling capacitors. The time constant circuits formed in conjunction with R8 and R9 reduce the impulse noise that occurs when power is applied and remove ripple components that enter from the power supply line. Input filter resistors. Input bias resistors. These resistors bias the input pins to 0V. The input impedance is largely determined by these resistors. These resistors determine the voltage gain (VG). A voltage gain of 40dBm, achieved by setting R3 and R13 to 560 and R4 and R14 to 56k, is recommended. It is desirable that R3 and R13 be used to change the voltage gain. If R4 and R14 are uesd to change the voltage gain, set R4=R2 and R14=R12 to for VN balance stability. Oscillation prevention resistors. Oscillation prevention resistors. The power dissipated in these resistors depends on the signal frequency as follws. R6, R16
C6, C7
C8, C9 R1, R11 R2, R12 R3, R13 R4, R14 R5, R15
P R6 (16)=
VCC max / 2 1/2 fC5 (15) × R6 (16)
2
× R6 (16)
where f is the upper limit of the output signal frequency. R7, R17 Output resistors. These resistors increase the resistance to load shorting during high output. Ripple filter resistors. The PO max, ripple rejection and impulse noise at power on are changed by these values. These resistors are the pre-drive transistor lomit resistors in the load short state and the peak current when C8 and C9 are changed flow through these resistors. Therfore, the power sissipated in these resistors requires consideration when determining their values. Oscillation prevention coils. These inductors correct phase shifting due to capacitive loads and increase circuit stability.
R8, R9
L1, L2
No.48974/8
STK401-130
Series Configuration
3-channel amplifier Type Nos. STK400-010 STK400-020 STK400-030 STK400-040 STK400-050 STK400-060 STK400-070 STK400-080 STK400-090 STK400-100 STK400-110 Rated output 10W × 3 15W × 3 20W × 3 25W × 3 30W × 3 35W × 3 40W × 3 45W × 3 50W × 3 60W × 3 70W × 3 3-channel amplifier Type Nos. STK401-010 STK401-020 STK401-030 STK401-040 STK401-050 STK401-060 STK401-070 STK401-080 STK401-090 STK401-100 STK401-110 STK401-120 STK401-130 STK401-140 Rated output 10W × 2 15W × 2 20W × 2 25W × 2 30W × 2 35W × 2 40W × 2 45W × 2 50W × 2 60W × 2 70W × 2 80W × 2 100W × 2 120W × 2 0.4 THD [%] f=20Hz to 20kHz Supply voltage [V]1 VCC max1 ±56.0 ±61.0 ±65.0 ±74.0 VCC max2 ±26 ±29 ±34 ±36 ±39 ±41 ±44 ±45 ±47 ±51 VCC1 ±17.5 ±20 ±23 ±25 ±26 ±28 ±30 ±31 ±32 ±35 ±3 8 ±4 2 ±45 ±5 1 VCC2 ±14 ±16 ±19 ±21 ±22 ±23 ±24 ±25 ±26 ±27
Note : VCC max1 VCC max2 VCC1 VCC2
When RL=6 When RL=between 3 and 6 When RL=6 When RL=3
End Product Series Design Example Using the Same PCB
No.48975/8
STK401-130
External Circuit Diagram
Note : 1. Not required when one of the STK400-010 through STK400-090 is using. 2. Must be shorted when one of the STK400-010 through STK401-090 is used.
Note : 1. Not required when one of the STK401-010 through STK401-090 is using. 2. Must be shorted when one of the STK401-010 through STK401-090 is used.
Thermal Design Example The thermal resistance c-a of the required heat sink for a total case-internal power dissipation Pd for the STK401-130 can be derived as follows : Condition 1 : The IC case temperature Tc must not exceed 125°C. Pd×c-a+Ta<125°C ........................................ (1) Ta : Set guaranteed ambient temperature Condition 2 : The individual power transistor junction temperatures must not exceed 150°C Pd×c-a+Pd/N×j-c+Ta<150°C ..................... (2) N: Nunber of power transistors j-c : Thermal resistance per power transistor However, the power dissipated by the power transistors (Pd) is divided evenly among the N transistors. Solving equations (1) and (2) for c-a gives : c-a< (125Ta)/Pd ......................................... (1)' c-a< (150Ta)/Pdj-c/N ............................. (2)' A value that satisfied these two equations will be the required heat sink thermal resistance. The required heat sink thermal resistance can be derived from formulas (1)' and (2)' once the following specifications have been determined. · Power supply voltage : VCC · Load resistance : RL · Guaranteed ambient temperature : Ta When the STK401-130 VCC is ±45V and RL is 6, the case-internal total power dissipation for a continuous sine wave signal will have a maximum value of 138W, as shown in Figure 1. One tenth of the PO max for this kind of continuous signal is generally used as an estimate of power dissipation for actual music signals, although this may vary somewhat depending on safety standards. Pd=86W (When 1/10 PO max is 10W)
No.48976/8
STK401-130
The STK401-130 has four power transistors and the thermal resistance per transistor is 1.0°C/W. If the guaranteed ambient temperature Ta is 50°C then the required heat sink thermal resistance can be calculated as follows. From formula (1)' : c-a < (12550)/86 < 0.87 From formula (2)' : c-a < (15050)/861.0/4 < 0.91 Therefore the value 0.87°C/W, which satisfies both of these formulas, is the required heat sink thermal resistance. Note that this thermal design example assumes a rated power supply and the actual thermal design must be confirmed in the end product itself.
No.48977/8
STK401-130
Specifications of any and all SANYO 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. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products(including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be expor ted without obtaining the expor t license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. 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 September, 1999. Specifications and information herein are subject to change without notice.
PS No.48978/8