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參數(shù)資料
| 型號(hào)： | AM5901AF44-E1 |
| 廠商： | BCD Semiconductor Manufacturing Limited |
| 英文描述： | 4-CHANNEL MOTOR DRIVER WITH POWER CONTROLLER |
| 中文描述： | 4通道馬達(dá)驅(qū)動(dòng)器，功率控制器 |
| 文件頁(yè)數(shù)： | 14/19頁(yè) |
| 文件大小： | 297K |
| 代理商： | AM5901AF44-E1 |
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Data Sheet
14
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
AM5901A
4-CHANNEL MOTOR DRIVER WITH POWER CONTROLLER
Application Information
H-Bridge Driver
1. Mute Function
Brake function is assigned to CH1, mute function
is assigned to other 3 channels.
(
1)
CH1 is in normal operation when the BRAKE
pin is low (high when CH1 mute on), and enters a
brake mode.
(
2)
CH2 is in normal operation
when the MUTE2
pin is low (high when CH2 mute on).
(
3)
CH3,4 are in normal operation
when the
MUTE34 pin is high (low when CH3,4 mute on).
2. V
REF
Drop Mute
When the voltage impressed to V
REF
terminal is
1.0V (Typ.) or less, impedance of driver output
becomes "high".
3. Thermal Shutdown
If the chip temperature rises above 140
o
C, then
the thermal shutdown (TSD) circuit is activated
and the output current is cut. When the chip
temperature has dropped to 100
o
C, then output
current begins to flow.
4. Driver Gain
Driver input resistance is 11k
(CH1, CH3,
CH4) and 7.5k
(CH2). Driver gain can be calcu-
lated by the expression.
CH1,3,4
CH2
R is an external resistance
The power supply of driver output stage is HV
CC
terminal and that of pre-driver circuit is VSYS2
terminal. Attach a by-pass capacitor (approxi-
mately 0.1
μ
F) between the power supplies as
near as possible to this chip.
DC/DC Converter Control Circuit
1. Output Voltage
Booster circuit of voltage (VSYS1) can be
configured with external component. The voltage
is defined as follows.
2. Short-Circuit Protection Function
When the output of error amplifier is "H", if the
voltage of SPRT terminal has reached 1.245V
(Typ.) upon charging the terminal, switching of
SW terminal is disabled. Time to disable
switching depends on the capacitor of SPRT
terminal and it can be calculated by the
expression:
t=C
SPRT
* V
TH
/I
SPRT
(sec)
(V
TH
=1.245V, I
SPRT
=10
μ
A)
R1 = External Resistance
R2 = External Resistance
R3 = 35k
R4 = 21k
G
V
=20 log |55k/(R+11k)|
G
V
=20 log | 110k/(R+7.5k)|
12
7
R1
R2
VSYS1
EI
R3
R4
1.245V
R2*R4
(R2+R4)
R1*R3
(R1+R3)
(V)
R2*R4
(R2+R4)
VSYS1 = 1.245 *
+
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM5901ALF44 | 制造商:BCDSEMI 制造商全稱:BCD Semiconductor Manufacturing Limited 功能描述:4-CHANNEL MOTOR DRIVER WITH POWER CONTROLLER |
| AM5901ALF44-E1 | 制造商:BCDSEMI 制造商全稱:BCD Semiconductor Manufacturing Limited 功能描述:4-CHANNEL MOTOR DRIVER WITH POWER CONTROLLER |
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