Ic Block Diagram & Description - Sanyo VCD-X220 Service Manual

IC BLOCK DIAGRAM & DESCRIPTION
U1 BH6575FV (POWER CONTROLLER)
Pin Symbol
1 START DC/DC converter starting terminal
2 OFF DC/DC converter OFF terminal
3 CLK External clock synchronization input terminal
4 MUTE34 CH3,4 mute terminal
5 MUTE1 CH1 mute terminal
6 RESET Reset output terminal
7 IN1 CH1 input terminal
8 IN2 CH2 input terminal
9 IN3 CH3 input terminal
10 IN4 CH4 input terminal
11 VREF Reference power supply input terminal
12 FIL1 CH1 feedback filter terminal
13 FIL2 CH2 feedback filter terminal
14 FIL3 CH3 feedback filter terminal
15 FIL4 CH4 feedback filter terminal
16 PGND1 power unit power supply ground terminal 1
17 OUT4- CH4 negative output
18 OUT4+ CH4 positive output
19 OUT3- CH3 negative output
20 OUT3+ CH3 positive output
Description Pin Symbol
21 PVCC H-bridge power supply input terminal
22 OUT2- CH2 negative output
23 OUT2+ CH2 positive output
24 OUT1- CH1 negative output
25 OUT1+ CH1 positive output
26 PGND2 power unit power supply ground terminal 2
27 SPRT short-circuit protection setting terminal
28 SOFT soft-start setting terminal
29 CT Triangular wave output terminal
30 DC_IN AC adapter power supply input terminal
31 REGB Tr driving terminal for regulator
32 REGO Battery power supply input erminal
33 GND Pre-unit power supply input erminal
34 PGND3 power unit power supply input erminal 3
35 LG Drive coil for boosting VG terminal
36 VG Drive the power-mos circuit power supply input terminal
37 SW Booster transistor drive terminal
38 VSYS Control circuit power supply input terminal
39 EI DC/DC converter error amplifier input terminal
40 EO DC/DC converter error amplifier output terminal
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Description