Sharp MD-DR470HS Service Manual page 49

IC601 VHiLV8221T+-1 : Motor Driver (LV8221T) (1/2)
Port Name
Pin No.
1 SPGND GND of spindle output section.
2 SPVS Power terminal spindle drive. A capacitor is connected to the paired GND.
3 FIL Comparator filter terminal for detecting spindle motor position.
A capacitor is connected between this and COMIN terminal (PIN).
4 COMIN Comparator filter terminal for detecting spindle motor position.
A capacitor is connected between this and FIL terminal (PIN).
5, 6 SGND Small signal system GND terminal.
7 VCO VCO oscillator terminal. A capacitor is connected to the paired GND.
The VCO oscillation frequency varies depending on the motor revolutions (VCOIN terminal voltage).
8 RMAX VCO maximum frequency setting terminal. If connection resistance is reduced, the VCO oscillation frequency
rises.
9 VCOIN VCO control voltage input terminal. A capacitor is connected to the paired GND.
The control output corresponding to the motor revolutions is generated inside the logic, and the capacitor
connected to the paired GND is charged. The VCO oscillation frequency is controlled by the voltage of this
terminal.
10 MODE1 PWM frequency switching input terminal. "H" is selected when the CLK terminal (PIN) input frequency is 32 times
of the spindle PWM frequency; "L" is selected if 64 times.
11 S/S Start/stop terminal of spindle motor section. "H" level input: start.
12 MUTE3 Half bridge mute terminal.
When L is input, each output terminal of the above driver turns to high impedance.
13 IN4 Half bridge control input terminal.
14 BRK Brake terminal of spindle motor section. "L" level input: counter torque brake.
15 PWM PWM signal input terminal. The output TR is turned ON by "H" input.
16 CLK Reference clock input terminal for logic operation. Frequency of 32 or 64 times of the spindle PWM frequency is
input.
17, 18 IN3F, IN3R H bridge 3 logic input terminal.
19 VS3 H bridge 3 power terminal. A capacitor is connected to the paired GND.
20 OUT3F H bridge 3 forward output terminal.
21 OUT3R H bridge 3 reverse output terminal.
22 PGND3 H bridge 3 output section GND terminal.
23 PGND2 H bridge 2 output section GND terminal.
24 OUT2F H bridge 2 forward output terminal.
25 OUT2R H bridge 2 reverse output terminal.
26 VS2 H bridge 2 power terminal. A capacitor is connected to the paired GND.
27 VS1 H bridge 1 power terminal. A capacitor is connected to the paired GND.
28 OUT1F H bridge 1 forward output terminal.
29 OUT1R H bridge 1 reverse output terminal.
30 PGND1 H bridge 1 output section GND terminal.
31, 32 IN1F, IN1R H bridge 1 logic input terminal.
33, 34 IN2R, IN2F H bridge 2 logic input terminal.
35 MUTE H bridge 1, 2 and 3-phase thread mute terminal.
When L is input, each output terminal of the above driver turns to high impedance.
36 MUTE2 H bridge 3 mute terminal.
37 CP1 Pulse output terminal for raising charge pump pressure.
A capacitor is connected between this and CPC1 terminal (PIN).
38 CP2 Pulse output terminal for raising charge pump pressure.
A capacitor is connected between this and CPC2 terminal (PIN).
39 CPC1 Terminal for raising charge pump pressure. A capacitor is connected between this and CP1 terminal (PIN).
40 CPC2 Terminal for raising charge pump pressure. A capacitor is connected between this and CP2 terminal (PIN).
41 VG Output terminal for raising charge pump pressure. A capacitor is connected to the paired GND.
42, 43 VCC Small signal system power terminal. A capacitor is connected to the paired GND.
44-46 S1-S3 Logic input terminal for 3-phase thread section. The output is PIN.
47 SLVS Power terminal for 3-phase thread drive. A capacitor is connected to the paired GND.
48 FG FG pulse output terminal (MOS output). Pulse corresponding to 3 holes is output.
Function
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MD-DR470H/MD-DR480H