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Denon AVR-X540BT Service Manual

Denon AVR-X540BT
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Terminal Functions
TC74VHC157FT (DIGITAL : IC745)
TPS563200 (DIGITAL : IC751 - IC753)
Terminal Functions
PIN
DESCRIPTION
NAME NUMBER
GND 1
Ground pin Source terminal of low-side power NFET as well as the ground ter-
minal for controller circuit. Connect sensitive VFB to this GND at a single point.
SW 2 Switch node connection between high-side NFET and low-side NFET.
VIN 3 Input voltage supply pin. The drain terminal of high-side power NFET.
VFB 4
Converter feedback input. Connect to output voltage with feedback resistor
divider.
EN 5 Enable input control. Active high and must be pulled up to enable the device.
VBST 6
Supply input for the high-side NFET gate drive circuit. Connect a 0.1 μ F ca-
pacitor between VBST and SW pins.
Block diagram
TC74VHC157F/FN/FT/FK
2007-10-01
2
Pin Assignment IEC Logic Symbol
Truth Table
Inputs
ST SELECT A B
Output
H X X X L
L L L X L
L L H X H
L H X L L
L H X H H
X: Don’t care
(1)
(15)
(2)
(5)
(3)
1A
2A
1B
(6)
(10)
3A
2B
(4)
(9)
1Y
3Y
(7)
(12)
2Y
4Y
EN
SELECT
ST
3B
(14)
(13)
4A
4B
G1
(11)
1 MUX
1
4A
V
CC
16
4B
15
14
13
12
11
10
1
2
3
4
5
6
7
1Y
2A
2B
2Y
GND
4Y
8
3Y
9
3A
3B
(top view)
1A
1B
SELECT
ST
A
S G
B A
Y B
A
Y
B A
Y BY
SW
VBST
VFB
GND
2
3
1
EN
4
6
5
VIN
TPS562200, TPS563200
DDC (SOT) Package
Top View
2 SW
ZC
XCON
PWM
Control Logic
+
+
+
UVP
OVP
3 VIN
Ton
One-Shot
6
VBST
+
4
VFB
OCL
+
+
Soft Start
5EN
HS
LS
1 GND
SS
Voltage
Reference
Ref
Hiccup
V
UVP
V
OVP
OCL
threshold
Regulator
UVLO
VREG5
VREG5
TSD
40
Caution in
servicing
Electrical Mechanical Repair Information Updating

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Denon AVR-X540BT Specifications

General IconGeneral
Channels5.2
HDMI Inputs5
HDMI Outputs1
BluetoothYes
4K Ultra HD Pass-throughYes
Dolby TrueHDYes
DTS-HD Master AudioYes
Auto Speaker CalibrationNo
Number of Power Amps5
Output Power (6 ohm, 1 kHz, 0.7% 2ch Drive)90 W
Output Power (6 ohm, 1 kHz, 10% 1ch Drive)140 W
Composite In2
Composite Out1
Digital In: Optical2
Analog In2
Speaker Terminal: ScrewYes
FM Tuner with RDSYes
3D Signal Pass-ThroughYes
Audio Return ChannelYes
HDMI Standby Pass-ThroughYes
CECYes
Auto Speaker Setup by MicrophoneNo
Dimensions (W x H x D)434 x 151 x 319 mm
Weight7.5 kg
Total Harmonic Distortion0.08 %
Input Sensitivity/Impedance200 mV / 47 kΩ
Signal-to-Noise Ratio98 dB
Ethernet PortNo
Wi-FiNo
Power Output per Channel70W (8 ohms, 20Hz - 20kHz, 0.08% THD)
Frequency Response10Hz - 100kHz
Supported Audio FormatsMP3, WMA, AAC

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