Sample Application Circuit
To large signal GND
Unit (resistance:Ω, capacitance:F)
C + R can be added to the negative side of the output capacitor.
However, this is true only for a Sanyo-recommended board; for a set board, artwork must also be
Description of External Components
C1, C8: Bootstrap capacitors
These capacitors affect low-region output; if the capacitor value is reduced, the low-region output decreases. Therefore,
47 µF or more is desirable.
C2, C6: Output capacitors
If the capacitor value is reduced, low-region roll-off frequency fL and low-region Po worsen.
C3, C7: Oscillation blocking capacitors
Mylar capacitor, which is excellent in temperature characteristics and frequency characteristics is used.
C4: Power supply capacitor
The capacitor values depends on the power supply line loads (motor, and the like.) and transformer ripple component.
1000 µF to 2200 µF is recommended.
C5: Standby capacitor
Pop noise reduction capacitor
C9, C11: Feedback capacitors
In addition to affecting low-region roll-off frequency fL, if the capacitor value is increased, the start-up time is extended.
C10: Decoupling capacitor
This capacitor absorbs power supply ripples; 220 µF is recommended.
R1, R2: Oscillation blocking resistors
The resistor value may be varied 3.3 Ω to 1.0 Ω.