Denon AVR-X540BT Service Manual

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

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