HA13158A Renesas, HA13158A Datasheet - Page 7

• Manufacturer Part Number: HA13158A
• Description: 34 W X 4-channel BTL Power ic
• Manufacturer: Renesas

Point of Application Board Design
1. Notes on Application Board’s Pattern Design
2. How to Reduce the Popping Noise by Muting Circuit
Table 1
C ( F)
nothing
0.47
4.7
For increasing stability, the connected line of V
impedance.
For increasing stability, it is better to place the capacitor between V
It is better to place the grounding of resistor (Rg), between input line and ground, close to INGND (Pin
12) because if OUTGND is connected to the line between Rg and INGND, THD will become worse due
to current from OUTGND.
At normal operating circuit, Muting circuit operates at high speed under 1 s.
In case popping noise becomes a problem, it is possible to reduce the popping noise by connecting
capacitor, which determines the switching time constant, between pin 10 and GND. (Following figure
2)
We recommend value of capacitor greater then 1 F.
Also transitional popping noise can be reduced sharply by muting before V
Muting ON/OFF Time
Figure 1 Notes on Application Board’s Pattern Design
0 V
Figure 2 How to use Muting Circuit
ON Time
under 1 s
2 ms
19 ms
Rg
1
7.5 k
4.7 F
5 V
12
CC
10
6
0.1 F
and OUTGND is better to be made wider and lower
3
4
5
Muting
control
V
CC
CC
and GND (0.1 F) close to IC.
OFF Time
under 1 s
2 ms
19 ms
CC
and Standby are ON/OFF.
HA13158A
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