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參數(shù)資料
| 型號： | STK672-010 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Unipolar Fixed-Current Chopper (separate excitation) Type 1.7 A Output Current Stepping Motor Driver with Built-in 4-Phase Distribution Controller(單極性固定電流斬波型輸出電流1.7A步進(jìn)式馬達(dá)驅(qū)動器（帶內(nèi)置式4相位分配控制器）) |
| 中文描述： | 單極固定電流斬波（單獨激發(fā)）類型1.7 A輸出電流步進(jìn)電機驅(qū)動器，內(nèi)置4相分布控制器（單極性固定電流斬波型輸出電流1.7A步進(jìn)式馬達(dá)驅(qū)動器（帶內(nèi)置式4相位分配控制器）） |
| 文件頁數(shù)： | 15/17頁 |
| 文件大?。?/td> | 325K |
| 代理商： | STK672-010 |
<Junction Temperature>
The junction temperature Tj for each device can be derived from the power dissipation Pds for each transistor and
θ
j-c.
Tj = Tc +
θ
j-c
×
Pds [°C]..................................................................................................................................... (18)
The average power dissipation per transistor Pds can be derived by referring to the Pd calculation formula (average
power dissipation: the total for four transistors) for each excitation mode.
Example: The power dissipation per transistor can be calculated as Pds = Pd/4.
Note that the thermal resistance of the power transistors has the following value.
θ
j-c for F1 to F4 = 13.5 °C/W
Note: When calculating the Tj for the power transistors, the power dissipation in the detection resistor is included in the
Pds value. Therefore the voltage drop for the Rs must be taken into account in the calculation.
<STK672-010 No Heat Sink Region Example>
This section presents a case where the STK672-010 can be used without a heat sink.
Conditions:
Motor power supply voltage V
CC
= 42 V, stepping motor electrical characteristics: 3.5 mH/, 3.5
/
Excitation: 2 phase excitation
Input clock: 500 Hz (fixed)
Hybrid IC ambient temperature Ta = 25°C, natural convection
Motor output current: 1.7 A
From these conditions and formulas (12), (13), and (15):
t1
≈
0.15 ms
t2
≈
3.72 ms
t3
≈
0.13 ms
The average power dissipation is calculated from formula (9) referencing Figure 17 and Figure 18.
Pd
2EX
= (Vst + Vdf)
I
OH
· t2 +
(Vst · t1 + Vdf · t3)
≈
4.43 + 0.16
≈
4.6 [W]
Tc is derived from formula (7) as follows:
Tc = Pd
2EX
× θ
c-a + Ta = 4.6
×
16.5 + 25
≈
101 [°C] < Tc max = 105 [°C]
(
θ
c-a = 16.5°C/W: the thermal resistance of the hybrid IC itself with no heat sink)
Note that the typical values of the device characteristics have been used in this example. Therefore, due also to the
details of the air flow around the hybrid IC, the actual values will not necessarily agree with this calculation, and must be
confirmed in an actual operating circuit.
I
OH
· f clock
2
f clock
2
No. 4927-15/17
STK672-010
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| STK672 | Aluminum Polymer Radial Lead Capacitor; Capacitance: 270uF; Voltage: 16V; Case Size: 8x12 mm; Packaging: Bulk |
| STK672-020 | Unipolar Fixed-Current Chopper(separate excitation)Type 3.0A Output Current Stepping Motor Driver with Built-in 4-Phase Distribution Controller |
| STK672-040 | Microstep Operation-Supported 4-Phase Stepping Motor Driver (Io= 1.5A) |
| STK672-050 | Microstep Operation-Supported 4-Phase Stepping Motor Driver (Io= 3.0A) |
| STK672-080 | Aluminum Polymer Radial Lead Capacitor; Capacitance: 470uF; Voltage: 16V; Case Size: 10x13 mm; Packaging: Bulk |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STK672-040-E | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 Unipoler 2PhaseMicro SteppingMotor Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| STK672-040GEVB | 功能描述:電源管理IC開發(fā)工具 EVM FOR STK672-040-E RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| STK672-050 | 制造商:Panasonic Industrial Company 功能描述:IC |
| STK672050E | 制造商:ON Semiconductor 功能描述: |
| STK672-050-E | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 Unipoler 2PhaseMicro SteppingMotor Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
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