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HT7K1201

更新时间： 2024-04-09 18:59:15
品牌 Logo 应用领域
台湾合泰/盛群 - HOLTEK /
页数 文件大小 规格书
14页 716K
描述
1 Channel, 6.0V, Peak Current 1.3A H-Bridge Driver

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HT7K1201 数据手册

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HT7K1201  
In the Sleep Period, all functional blocks are turned off  
to reduce the current consumption to an ultra-low value  
of less than 0.1μA (max). The driver remains in the  
Sleep Period (Figure 2). Since all functional blocks are  
turned off, the Standby mode outputs are not protected.  
When an IN1 or IN2 pin is set to “High”, the device  
will exit from the Sleep Period.  
Functional Description  
Overview  
The HT7K1201 is a 1-ch H-bridge driver that can drive  
DC brush motors or solenoids. Due to the 4 internal  
very low on-resistance power MOSFETs which have  
parallel spark killer diodes in the 6-pin SOT23 package,  
the HT7K1201 motor driver has a high efficiency motor  
driving capability, reduced external components. The  
device also includes a full range of protection functions  
including over-current and over-temperature to prevent  
the possibility of burn-out occurring even if the motor  
stalls or if the output pins are shorted to each other.  
VDD Under Voltage Lock-out  
In order to avoid an H-bridge metastable output  
condition when powered-on or with a low battery  
voltage, an under voltage lockout function is  
integrated within the device. During the power-  
on period, the H-bridge outputs will remain in high  
impedance states and the control inputs are ignored  
when VDD is lower than VUVLO+. The H-bridge outputs  
are only controlled by inputs when VDD is higher than  
VUVLO+. The device will be locked again when VDD  
H-Bridge Control  
According to the IN1 and IN2 pin states the device  
will generate four H-bridge output states: Standby,  
Forward, Reverse and Brake. The input/output  
operation truth table in Active Period is shown in  
Table1. Note that the IN1 and IN2 control input pins  
are not allowed to float and must be connected to an  
external 100kΩ pull-up or pull-down resistor.  
falls to a voltage level lower than VUVLO-  
.
Over Current Protection OCP  
−
The HT7K1201 device includes a fully integrated  
over current protection function within each of the  
internal power MOSFETs. When the motor current  
Active Period and Sleep Period  
exceeds the over current protection threshold, IOCP  
,
When the Standby mode continuously exceeds over  
10ms, the HT7K1201 will enter the Sleep Period. At this  
time, the Standby mode still works in the Sleep Period  
as shown in Table 2. Changing the operation mode to  
Forward or Reverse will go back to the Active Period.  
exceeding a de-glitch time, tDEG, all power MOSFETs  
will be turned off immediately. After the retry time  
times out, the device will release the protection  
activation and allow normal operation to resume.  
H-Bridge Status  
IN1  
IN2  
OUT1  
OUT2  
Operation Mode  
M1  
OFF  
OFF  
ON  
M2  
OFF  
ON  
M3  
OFF  
ON  
M4  
OFF  
OFF  
ON  
0
0
1
1
0
1
0
1
Z
L
Z
H
L
Standby  
Reverse  
Forward  
Brake  
H
L
OFF  
ON  
OFF  
OFF  
L
OFF  
ON  
Table 1. Operation Truth Table in Active Period  
H-Bridge Status  
IN1  
IN2  
OUT1  
OUT2  
Operation Mode  
M1  
M2  
M3  
M4  
0
0
Z
Z
Standby  
OFF  
OFF  
OFF  
OFF  
Table 2. Operation Truth Table in Sleep Period  
VM  
VM  
VM  
VM  
M1  
M3  
OFF  
M1  
OFF  
M3  
ON  
M1  
OFF  
M3  
M1  
OFF  
M3  
OFF  
ON  
OFF  
OUT1  
M2  
OUT2  
M4  
OUT1  
M2  
OUT2  
M4  
OUT1  
M2  
OUT2  
M4  
OUT1  
M2  
OUT2  
M4  
M
M
M
M
OFF  
OFF  
OFF  
ON  
ON  
OFF  
ON  
ON  
Standby  
Forward  
Reverse  
Brake  
H-Bridge Operation Modes  
Rev. 1.40  
8
June 19, 2020  
1...567891011...14

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