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參數(shù)資料
| 型號(hào)： | L6228N |
| 廠商： | STMICROELECTRONICS |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 2.8 A, PDIP24 |
| 封裝： | POWER, DIP-24 |
| 文件頁(yè)數(shù)： | 2/26頁(yè) |
| 文件大小： | 451K |
| 代理商： | L6228N |
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L6228
10/26
CIRCUIT DESCRIPTION
POWER STAGES and CHARGE PUMP
The L6228 integrates two independent Power MOS
Full Bridges. Each Power MOS has an RDS(ON) =
0.73
(typical value @ 25°C), with intrinsic fast free-
wheeling diode. Switching patterns are generated by
the PWM Current Controller and the Phase Se-
quence Generator (see below). Cross conduction
protection is achieved using a dead time (tDT = 1
s
typical value) between the switch off and switch on of
two Power MOSFETSs 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 8V to 52V. It has to
be noticed that the RDS(ON) increases of some per-
cents when the supply voltage is in the range from 8V
to 12V.
Using N-Channel Power MOS for the upper transis-
tors in the bridge requires a gate drive voltage above
the power supply voltage. The bootstrapped supply
voltage VBOOT is obtained through an internal Oscil-
lator and few external components to realize a
charge pump circuit as shown in Figure 6. The oscil-
lator output (VCP) is a square wave at 600KHz (typi-
cal) with 10V amplitude. Recommended values/part
numbers for the charge pump circuit are shown in Ta-
ble 1.
Table 1. Charge Pump External Components
Values
Figure 6. Charge Pump Circuit
LOGIC INPUTS
Pins CONTROL, HALF/FULL, CLOCK, RESET and
CW/CCW are TTL/CMOS and uC compatible logic
inputs. The internal structure is shown in Fig. 7. Typ-
ical value for turn-on and turn-off thresholds are re-
spectively Vth(ON)= 1.8V and Vth(OFF)= 1.3V.
Pin EN (Enable) has identical input structure with the
exception that the drain of the Overcurrent and ther-
mal protection MOSFET is also connected to this pin.
Due to this connection some care needs to be taken
in driving this pin. The EN input may be driven in one
of two configurations as shown in Fig. 8 or 9. If driven
by an open drain (collector) structure, a pull-up resis-
tor REN and a capacitor CEN are connected as shown
in Fig. 8. If the driver is a standard Push-Pull structure
the resistor REN and the capacitor CEN are connected
as shown in Fig. 9. The resistor REN should be cho-
sen in the range from 2.2K
to 180K. Recommend-
ed values for REN and CEN are respectively 100K
and 5.6nF. More information on selecting the values
is found in the Overcurrent Protection section.
Figure 7. Logic Inputs Internal Structure
Figure 8. EN Pin Open Collector Driving
Figure 9. EN Pin Push-Pull Driving
CBOOT
220nF
CP
10nF
RP
100
D1
1N4148
D2
1N4148
D2
CBOOT
D1
RP
CP
VS
VSA
VCP
VBOOT
VSB
D01IN1328
5V
D01IN1329
ESD
PROTECTION
5V
OPEN
COLLECTOR
OUTPUT
REN
CEN
EN
D01IN1330
ESD
PROTECTION
5V
PUSH-PULL
OUTPUT
REN
CEN
EN
D01IN1331
ESD
PROTECTION
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6228PD | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 DMOS Stepper Motor RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類(lèi)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 |
| L6228PD013TR | 制造商:STMicroelectronics 功能描述:DMOS DRIVER FOR BIPOLAR STEPPER - Tape and Reel |
| L6228PDTR | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 DMOS Stepper Motor RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類(lèi)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 |
| L6228Q | 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(lèi)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 |
| L6228Q_10 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:DMOS driver for bipolar stepper motor |
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