參數(shù)資料
型號(hào): HA13532NT
廠商: Hitachi,Ltd.
英文描述: Three-Phase Stepping Motor Control IC
中文描述: 三相步進(jìn)電機(jī)控制IC
文件頁(yè)數(shù): 6/16頁(yè)
文件大小: 68K
代理商: HA13532NT
HA13532NT
6
External Conponents
Symbol
Recommended Value
Purpose
Notes
Rnf
0.11
Rnf
0.33
51 k
Current sensing
1
Rt
Reference current programming
2
Ct
1000 pF
Time constant for PWM carrier frequency
3
C
101
C
102
, C
103
, C
104
C
105
R
101
VR
101
Notes: 1. The maximum motor drive current is:
Vdac + Voffs
0.1
μ
F
0.01
μ
F
Power supply decoupling
Penetration current control
4
1000 pF
Current sensing filter
750
100 k
Motor current little adjustment
Imax ±
Rnf
(1)
where, Vdac:
Voffs:
2. The output sink current Iosnk, output source current Iosrc, and Ct charge/discharge currents Ict+
and Ict– are calculated as follows:
where, set Rt to be 2.5k
or higher.
Rt
Ru
(2)
DAC output voltage (see electrical characteristics)
Offset voltage (see electrical characteristics)
Iosnk 50Vrt
Vbe
Iosrc 50Vrt
Rt
Vbe
Rd
(3)
Ict+, Ict–
Vrt
Rt
(4)
where, Vrt:
Rt voltage (see electrical characteristics)
pull-up resistance (see electrical characteristics)
pull-down resistance (see electrical characteristics)
Vbe: base-emitter voltage of driven transistor
3. The PWM carrier frequency fc is calculated as follows:
Ict
2Ct (Vcth – Vctl)
Ru:
Rd:
fc
(5)
Vrt
2CtRt (Vcth – Vctl)
(6)
where, Vcth: Ct high voltage (see electrical characteristics)
Vctl: Ct low voltage (see electrical characteristics)
4. Values of C
102
, C
103
, C
104
, C
105
, R
101
are different from using power transistor
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