参数资料
型号: KIT33887PNBEVB
厂商: Freescale Semiconductor
文件页数: 13/37页
文件大小: 0K
描述: KIT EVAL 33887 5A H-BRIDGE PQFN
标准包装: 1
主要目的: 电源管理,H 桥驱动器(内部 FET)
嵌入式:
已用 IC / 零件: MC33887
主要属性: 5A 5 ~ 28V PWM 至 20kHz 有源电流限制
次要属性: 故障状态,睡眠模式,比例电流镜像输出
已供物品: 板,CD
相关产品: MC33887DWBR2-ND - IC H-BRIDGE 5A LOAD FDBK 54-SOIC
MC33887VWR2-ND - IC H-BRIDGE 5.0A W/CS 20-HSOP
MC33887PNBR2-ND - IC H-BRIDGE 5A CURR FDBK 36-PQFN
MC33887PNB-ND - IC H-BRIDGE CURR FDBK 5A 36-PQFN
MC33887DHR2-ND - IC H-BRIDGE 5A CURR FDBK 20-HSOP
MC33887VW-ND - IC H-BRIDGE 5.0A W/CS 20-HSOP
MC33887DWB-ND - IC H-BRIDGE 5.0A W/CS 54-SOIC
MC33887DH-ND - IC H-BRIDGE 5.0A W/CS 20-HSOP
ELECTRICAL CHARACTERISTICS
TIMING DIAGRAMS
>8A
6.5
0
Active
Current
Limiting
on Low-Side
MOSFET
Short Circuit Detection Threshold
Typical Current Limit Threshold
High Current Load Being Regulated via Constant-OFF-Time PWM
Hard Short Detect ion and Latch-OFF
Moderate Current Load
[1]
IN1 or IN2
IN1 or IN2
[0]
IN1 IN2
IN2 or IN1
IN2 or IN1
[1]
[0]
[1]
[0]
[1]
Outputs
Outputs Operation
Outputs
[0]
Tri-Stated
(per Input Control Condition)
Tri-Stated
Time
Figure 10. Operating States
8.0
I Short Short Circuit Detection Circuit Detect SCL
Overcurrent Minimum Threshold Threshold
6.5
t on
t a a
t b b
Output Output
I LIM Limit Time Output
t a = = Tristate Constant-OFF Time Time
t b = = Current Blanking Time
Typical PWM Load
Current Limiting
Typical Current
Limiting Waveform
Waveform
5.0
0.0
Hard short occurs.
short Short is Detect ion
Hard Output detected during t b
and output is
Short Latch-OFF latched-off.
TIME
Figure 11. Example Short Circuit Detection Detail on Low-Side MOSFET
33887
Analog Integrated Circuit Device Data
Freescale Semiconductor
13
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