Denon DN-V1700, Service Manual

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25
DN-V1700
Pin
No.
Pin Name Function
16 LX2
External Inductor Connection for OUT2. Connect to the switched side of the inductor. LX2 serves as the lower supply
voltage rail for the DH2 high-side gate driver and is the positive input to the OUT2 current-limit comparator.
17 DH2 High-Side Gate Driver Output for OUT2. Swings from LX2 to BST2.
18 BST2
Boost Flying Capacitor Connection for OUT2. Connect to an external capacitor and diode according to the Standard
Application Circuit.
19 DL2 Low-Side Gate-Driver Output for OUT2. DL2 swings from PGND to V
DD
.
20 V
DD
Supply Input for the DL Gate Drivers. Connect to the system supply voltage, +4.5V to +5.5V. Bypass to PGND with a
minimum 4.7
µ
F ceramic capacitor.
21 V
CC
Analog-Supply Input. Connect to the system supply voltage, +4.5V to +5.5V, with a 20
Ω
series resistor. Bypass to
AGND with a 1
µ
F ceramic capacitor.
22 PGND
Power Ground. Connect directly to the low-side MOSFETs’ sources. Serves as the negative input of the current-sense
amplifiers.
24 DL1 Low-Side Gate Driver Output for OUT1. DL1 swings PGND to V
DD
.
25 BST1
Boost Flying Capacitor Connection for OUT1. Connect to an external capacitor and diode according to the Standard
Application Circuit.
26 DH1 High-Side Gate Driver Output for OUT1. Swings from LX1 to BST1.
27 LX1
External Inductor Connection for OUT1. Connect to the switched side of the inductor. LX1 serves as the lower supply
voltage rail for the DH1 high-side gate driver.
CD74HC4046AM (IC106)
TOP VIEW
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
PCP
OUT
PC1
OUT
COMP
IN
VCO
OUT
INH
C1
A
GND
C1
B
V
CC
SIG
IN
PC2
OUT
R
2
R
1
DEM
OUT
VCO
IN
PC3
OUT
Name and Function Pin No. Symbol
CD74HC4046AM Pin Description
1 PCP
OUT
Phase Comparator Pulse Output
2 PC1
OUT
Phase Comparator 1 Output
3 COMP
IN
Comparator Input
4 VCO
OUT
VCO Output
5 INH Inhibit Input
6 C1
A
Capacitor C1 Connection A
7 C1
B
Capacitor C1 Connection B
8 GND Ground (0V)
9 VCO
IN
VCO Input
10 DEM
OUT
Demodulator Output
11 R
1
Resistor R1 Connection
12 R
2
Resistor R2 Connection
13 PC2
OUT
Phase Comparator 2 Output
14 SIG
IN
Signal Input
15 PC3
OUT
Phase Comparator 3 Output
16 V
CC
Positive Supply Voltage