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參數(shù)資料
| 型號： | TB62202AFG |
| 廠商： | Toshiba Corporation |
| 英文描述： | Dual-Stepping Motor Driver IC for OA Equipment Using PWM Chopper Type |
| 中文描述： | 雙辦公自動化設(shè)備步進(jìn)馬達(dá)驅(qū)動IC用PWM斬波型 |
| 文件頁數(shù)： | 24/84頁 |
| 文件大?。?/td> | 1272K |
| 代理商： | TB62202AFG |
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TB62202AFG
2005-04-04
24
IC Power Dissipation
IC power dissipation is classified into two: power consumed by transistors in the output block and power consumed
by the logic block and the charge pump circuit.
(1) Power consumed by the Power Transistor (calculated with R
on
=
1.3
)
In Charge mode, Fast Decay mode, or Slow Decay mode, power is consumed by the upper and lower
transistors of the H bridges. The following expression expresses the power consumed by the transistors of a
H bridge.
P (out)
=
2 (T
r
)
×
I
out
(A)
×
V
DS
(V)
=
2
×
I
out
^2
×
R
on
·························(1)
The average power dissipation for output under 4-bit micro step operation (phase difference between
phases A and B is 90
°
) is determined by expression (1).
Thus, power dissipation for output per unit is determined as follows (2) under the conditions below.
R
on
=
1.3
(@1.0 A)
I
ou
t
(Peak : Max)
=
0.6 A
V
M
=
24 V
V
DD
=
5 V
P (out)
=
2 (T
r
)
×
0.6 (A)^2
×
1.3 (
) ·················································(2)
=
0.936 (W)
(2) Power consumed by the logic block and IM
The following standard values are used as power dissipation of the logic block and IM at operation.
I (LOGIC)
=
2 mA (Typ.):
/
unit
I (IM3)
=
12.5 mA (Typ.): operation
/
unit
I (IM1)
=
6.0 mA (Typ.): stop
/
unit
The logic block is connected to V
DD
(5 V). IM (total of current consumed by the circuits connected to V
M
and current consumed by output switching) is connected to V
M
(24 V). Power dissipation is calculated as
follows:
P (Logic and IM)
=
5 (V)
×
0.002 (A)
+
24 (V)
×
0.0125 (A)....................... (3)
=
0.31 (W)
(3) Thus, power dissipation for 1 unit (P) is determined as follows by (2) and (3) above.
P
=
P (out)
+
P (Logic and IM)
=
1.246 (W)
Power dissipation for 1 unit at standby is determined as follows:
P (standby)
=
24 (V)
×
0.006 (A)
+
5 (V)
×
0.002 (A)
=
0.154 (W)
When one motor driving
=
100 %, power dissipation is determined as follows:
P (all)
=
1.246 (W)
+
0.154 (W)
=
1.4 (W)
For thermal design on the board, evaluate by mounting the IC.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| TB62202AFG(EL) | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 Combination Motor 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 |
| TB62206FG | 制造商:Toshiba America Electronic Components 功能描述:2-Phase Stepping Motor Driver 5V 22-Pin(20+2Tab) HSOP |
| TB62206FG(EL) | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 Stepping Motor 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 |
| TB62206FG(O,EL) | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 2-Phase Bipolar IC 40V 1.8A POR 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 |
| TB62207BFG(O,EL) | 制造商:Toshiba America Electronic Components 功能描述:2 STEPPER MOTOR DRIVE, 40V 1.5A HSOP36 制造商:Toshiba America Electronic Components 功能描述:2 Stepper Motor Drive 37V 2.5A TB62207BF |
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