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參數(shù)資料
| 型號(hào)： | L6228Q |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 2.8 A, QCC32 |
| 封裝： | 5 X 5 MM, 1 MM HEIGHT, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 |
| 文件頁數(shù)： | 3/32頁 |
| 文件大?。?/td> | 491K |
| 代理商： | L6228Q |
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L6228Q
Circuit description
Doc ID 14321 Rev 4
11/32
4
Circuit description
4.1
Power stages and charge pump
The L6228Q integrates two independent power MOS full bridges. Each power MOS has an
RDS(on) = 0.73 Ω (typical value @ 25 °C), with intrinsic fast freewheeling diode. Switching
patterns are generated by the PWM Current Controller and the Phase Sequence Generator
(see below). Cross conduction protection is achieved using a dead time (t
DT = 1 μs typical
value) between the switch off and switch on of two power MOSFETs in one leg of a bridge.
Pins VSA and VSB must be connected together to the supply voltage VS. The device
operates with a supply voltage in the range from 8 V to 52 V. It has to be noticed that the
RDS(on) increases of some percents when the supply voltage is in the range from 8 V to
12 V.
Using N-channel power MOS for the upper transistors in the bridge requires a gate drive
voltage above the power supply voltage. The bootstrapped supply voltage V
BOOT is obtained
through an internal Oscillator and few external components to realize a charge pump circuit
as shown in Figure 8. The oscillator output (VCP) is a square wave at 600 kHz (typical) with
10V amplitude. Recommended values/part numbers for the charge pump circuit are shown
in Table 6.
Figure 8.
Charge pump circuit
Table 6.
Charge pump external components values
Component
Value
CBOOT
220 nF
CP
10 nF
D1
1N4148
D2
1N4148
D2
CBOOT
D1
CP
VS
VSA
VCP
VBOOT
VSB
D01IN1328
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6228Q_10 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DMOS driver for bipolar stepper motor |
| L6228QTR | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 DMOS Dual Full Bridge w/ PWM 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 |
| L6229 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DMOS DRIVER FOR THREE-PHASE BRUSHLESS DC MOTOR |
| L6229D | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 3-Phase DC Motor 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 |
| L6229DP | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 3-Phase DC Motor 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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