HA13571FR Datasheet, PDF (16/22 Pages) Hitachi Semiconductor – Combo (Spindle & VCM) Driver for HDD

HA13571FR
Electrical Characteristics (cont)
Item
Symbol Min Typ Max Unit Test Conditions
Applica-
ble pins
Note
PWM One-shot off time Toff
9
11 13
one
shot
µs Ext. R = 34kΩ,
C = 470pF
SPWMTC 1
One-shot minimum Ton
2.1 2.8 3.5
µs
on time
B-EMF Common mode
compa- input voltage
rators
Vcm
–0.4 —
VCC12 V
–2.0
SDRVU
SDRVV
SDRVW
SDRVN
Common mode
clamp resistor
Rclp 7
10 13
kΩ Sdrvn = 6V
Offset voltage
Vcos — — ±5
mV Sdrvn = 1.0V to Vcc12-2V
∆Vosc — — ±7
mV Variation in U, V, W
Output low voltage Vsink — — 0.5
V
Isink = 1.0mA
SENU
SENV
SENWIS
Output high voltage Vsource 2.7 — —
V
Isource = 0.04mA
Center tap voltage VCT
1.0 —
VCC12 V
–2.0
SCNTL1, 2, 3 = “L”
R_L = 2Ω/phase
VPCNTL = “H” or “M”
SDRVN
Control
amp &
sense
amp
Isense input current Isen
–10 — 24
µA SISENH = 0 to 0.4V
SISENH
SISENL
Isense amp voltage Ksp
gain
— 4.9 ±4.6% V/V Ksp = Spwmflt/Sisenh
Rs = 0.33Ω
SISENH
SPWMFLT
SISENH voltage V100 — 348 ±18
mV Rnf = 0.33Ω
D = 100% SISINK
1
Tj = 125°C
— 348 ±18
mV
D = 100%
V50
— 170 ±18
mV
D = 50%
V5
— 7 17
mV
D = 5%
V0
0.0 0.0 5
mV
D = 0%
Current loop
Bwd
1.8 3.0 —
kHz Rnf = 0.33W, Rm = 12Ω
1
bandwidth
Lm = 1.0mH, C111 = 0.47µF
ICOMP threshold Vth
voltage
— 180 ±15
mV No Load
No Rnf
Spwmflt = SENWIS
1.0V
— 80 ±11
mV Smode = 2.5V, Spwmflt =
Sisenh = 0 to 5V 0.5V
16