KAC-X10D
3
Ref. No. Application / Function Operation / Condition / Compatibility
IC14~16 Dead time generating circuit
It generates dead time not to penetrate the high-side and low-side PWM signal.
IC17 NF circuit It applies negative return from output to D-class first phase.
IC31 Short-circuit detection Detection of short-circuit between output and GND
IC32 ASO and short-circuit detection Detection of current-voltage and output short-circuit.
IC33 Detection signal latch It latches detection signal for a given length of time.
IC34 Detection circuit It sends detection signal to each circuit when a failure is detected, and
turn off the circuit.
IC35 Rectifying circuit It rectifies output voltage.
IC36 DC/DC converter It generates signals to make dual power supply from single power supply.
IC37 Mute circuit It generates Mute signal.
IC38 Clipper
It limits the audio signal amplitude and suppresses power when 1Ωis detected.
IC39 Resonance detection It detects resonance generated in output short-circuit.
Q2~4 ATT,MUTE It applies ATT-1,ATT-2 and MUTE.
Q5,22 5V-SW
It controls ON and OFF of D-class AMP gate driver circuit power supply 5V.
Q6~21 Level shift and gate drive. It performs D-class AMP level shift and MOS-FET gate drive.
Q301 Abnormal voltage detection It turns off P-CON when abnormal voltage is applied to power supply.
Q302,303,307,308
PW-SW It turns on AMP main body when it detects voltage in P-CON.
Q304,305 MUTE-SW It turns on and off MUTE.
Q306 PW (OFF)-SW It turn off AMP power when abnormal detections (over current, short-
circuit and DC offset) is detected.
Q309~312 DC/DC-FET drive DC/DC-FET gate driver
Q313~318 DC/DC-FET Switching FET for generating AMP secondary power supply
Q319~322 ±15V power supply It generates ±15V from secondary power supply ±B.
Q323,324 Tracking circuit It adjusts ±15V attenuation curve when power is turned off.
Q325 High-tap power supply circuit It generates +HB higher than +B to drive MOS-FET.
Q326,327,337~339
Current balance detection It detects the current balance on + and - side while it detects the current.
Q328,329 Output voltage rectifying circuit It applies bias on the signal with output voltage rectified.
Q330~334 DC offset detection It detects abnormal output DC voltage.
Q335 Failure SW It generates detection signals when a failure occurs.
Q336 1Ωdetection malfunction prevention circuit It prevents malfunction of 1Ωdetection in voltage instability when AMP
power is turned on.
Q701~708 MOS-FET It amplifies the switching level to ±B.
COMPONENTS DESCRIPTION
