ha13561f Renesas Electronics Corporation., ha13561f Datasheet - Page 17

• Manufacturer Part Number: ha13561f
• Description: Combo Spindle & Vcm Driver
• Manufacturer: Renesas Electronics Corporation.

11. The frequency response of VCM driver maybe have a gain peaking because of the resonation of
12. The retract current Iret is determined by following equation.
(for example) R
where, Vretpow:
the motor coil impedance. If you want to tune up for this characteristics, you can reduce the
peaking by additional snubber circuit R
Iret =
Vretpow – Vsat(Qret) – V
Vsat (Qret): Saturation voltage of Qret [V]
V
F
(D1):
(dB)
L
I
= 14.7 , R
O
R108 + Rs + R
Applied voltage on pin 78 [V]
Foward voltage of D1 [V]
–10
–20
1/2 V
Figure 1 VCM Driver Block Diagram
20
10
BTL Driver
0
100
PS
S
= 1 , L = 1.7 mH, Gain = L
F
(D1) – Vsat
L
+
–
–
+
X
1k
Frequency (Hz)
and C
R3
R3
C
R
17
X
X
= 0.22 F
= 560
VL
Normal
X
as follows.
RS
N
P
10k
R
C
X
X
100k
Coil
R
S
(28)
HA13561F