ViewSonic VA702-2 Service Manual page 26

2 PGND
3 NDRV2
4 GNDA
5 CT
6 LCT
7 ADJ
8 ENA
9 VSEN
10 CMP_SST
11 ISEN
12 VREF
13 VIN
14 HSB
15 PDRV3
16 PDRV1
7.3 U104 (TSU16AK)
Pin Symbol
1 LVBOM
2 GND
3 BYPASS
4 NC
5 NC
6 BUSTYPE
7 NC
8 NC
9 NC
10 GND
11 VDDP
12 NC
13 NC
14 NC
15 NC
16 NC
17 NC
18 VDDC
19 GND
20 GND
21 VDDP
22 NC
23 NC
24 NC
25 NC
26 NC
27 NC
28 NC
29 NC
30 AD0
31 AD3
32 HWRESET
ViewSonic Corporation
High-current power ground
Bottom MOSFET gate drive output in dual forward
O
converter
Low-current signal ground
I Timing capacitor of high frequency oscillator
I Timing capacitor of set LPWM frequency
I Control command input –DC
I Enable input
I Voltage sense feedback
I Soft start and loop compensation capacitor
I Current sense feedback
O Reference voltage output
I Supply voltage for IC
I High side driver buffer output
O Top MOSFET gate drive output in dual forward converter
O Top MOSFET gate drive output in dual forward converter
I/O Description
O B-Link Negative LVDS Differential Data Output
Ground
For External Bypass Capacitor
Not connected
Not connected
IN Low : Serial bus; High : Direct bus
Not connected
Not connected
Not connected
Ground
O Digital Output Power
Not connected
Not connected
Not connected
Not connected
Not connected
Not connected
I Digital Core Power
Ground
Ground
O Digital Output Power
Not connected
Not connected
Not connected
Not connected
Not connected
Not connected
Not connected
Not connected
I/O DDR direct bus AD0; 4mA driving strength
I/O DDR direct bus AD3; 4mA driving strength
I Hardware reset; active high
23
Confidential - Do Not Copy
VA702-2_VA721-3_VA721b-3