Denon AVR-X540BT Service Manual

TOP268VG (SMPS : IC601)
3
Figure 3. Functional Block Diagram.
PI-4511-012810
SHUTDOWN/
AUTO-RESTART
CLOCK
CONTROLLED
TURN-ON
GATE DRIVER
CURRENT LIMIT
COMPARATOR
INTERNAL UV
COMPARATOR
INTERNAL
SUPPLY
5.8 V
4.8 V
SOURCE (S)
SOURCE (S)
S
R
Q
D
MAX
STOP
SOFT
START
CONTROL (C)
VOLTAGE
MONITOR (V)
FREQUENCY (F)
-
+
5.8 V
I
FB
1 V
Z
C
V
C
+
-
+
-
+
-
LEADING
EDGE
BLANKING
÷ 16
1
HYSTERETIC
THERMAL
SHUTDOWN
SHUNT REGULATOR/
ERROR AMPLIFIER
+
-
DRAIN (D)
ON/OFF
DC
MAX
DC
MAX
66k/132k
0
OV/
UV
OVPV
V
I (LIMIT)
CURRENT
LIMIT
ADJUST
V
BG
+ V
T
LINE
SENSE
SOFT START
OFF
F REDUCTION
F REDUCTION
STOP LOGIC
EXTERNAL CURRENT
LIMIT (X)
OSCILLATOR
WITH JITTER
PWM
K
PS(UPPER)
K
PS(LOWER)
SOFT START
I
FB
I
PS(UPPER)
I
PS(LOWER)
K
PS(UPPER)
K
PS(LOWER)
Pin Functional Description
DRAIN (D) Pin:
High-voltage power MOSFET DRAIN pin. The internal start-up
bias current is drawn from this pin through a switched high-
voltage current source. Internal current limit sense point for
drain current.
CONTROL (C) Pin:
Error amplifier and feedback current input pin for duty cycle
control. Internal shunt regulator connection to provide internal
bias current during normal operation. It is also used as the
connection point for the supply bypass and auto-restart/
compe
nsation capa
citor.
EXTERNAL CURRENT LIMIT (X) Pin:
Input pin for external current limit adjustment remote-ON/OFF
and device reset. A connection to SOURCE pin disables all
functions on this pin. This pin should not be left floating.
VOLTAGE MONITOR (V) Pin:
Input for OV, UV, line feed-forward with DC
MAX
reduction, output
overvoltage protection (OVP), remote-ON/OFF. A connection to
the SOURCE pin disables all functions on this pin. This pin should
not be left flo
ating.
FREQUENCY (F) Pin :
Inpu
t pin for selecting switching frequency 132 kHz if connected
to SOURCE pin and 66 kHz if connected to CONTROL pin. This
pin should not be left floating.
SOURCE (S) Pin:
Output MOSFET source connection for high-voltage power return.
Primary-side control circuit common and reference point.
NO CONNECTION (NC) Pin:
Internally not connected, floating potential pin.
Figure 4. Pin Configuration (Top View).
12 S
11 S
10 S
9 S
8 S
7 S
V 1
X 2
C 3
F 4
D 6
PI-5568-061011
K Package
(eSOP-12B)
Exposed Pad (On Bottom)
Internally Connected to
SOURCE Pin
45
Caution in
servicing
Electrical Mechanical Repair Information Updating

Denon AVR-X540BT Specifications

General

Channels	5.2
HDMI Inputs	5
HDMI Outputs	1
Bluetooth	Yes
4K Ultra HD Pass-through	Yes
Dolby TrueHD	Yes
DTS-HD Master Audio	Yes
Auto Speaker Calibration	No
Number of Power Amps	5
Output Power (6 ohm, 1 kHz, 0.7% 2ch Drive)	90 W
Output Power (6 ohm, 1 kHz, 10% 1ch Drive)	140 W
Composite In	2
Composite Out	1
Digital In: Optical	2
Analog In	2
Speaker Terminal: Screw	Yes
FM Tuner with RDS	Yes
3D Signal Pass-Through	Yes
Audio Return Channel	Yes
HDMI Standby Pass-Through	Yes
CEC	Yes
Auto Speaker Setup by Microphone	No
Dimensions (W x H x D)	434 x 151 x 319 mm
Weight	7.5 kg
Total Harmonic Distortion	0.08 %
Input Sensitivity/Impedance	200 mV / 47 kΩ
Signal-to-Noise Ratio	98 dB
Ethernet Port	No
Wi-Fi	No
Power Output per Channel	70W (8 ohms, 20Hz - 20kHz, 0.08% THD)
Frequency Response	10Hz - 100kHz
Supported Audio Formats	MP3, WMA, AAC