KIT33887PNBEVB Freescale Semiconductor, KIT33887PNBEVB Datasheet - Page 13

• Manufacturer Part Number: KIT33887PNBEVB
• Description: KIT EVAL 33887 5A H-BRIDGE PQFN
• Manufacturer: Freescale Semiconductor

Specifications of KIT33887PNBEVB

• Main Purpose: Power Management, H Bridge Driver (Internal FET)
• Embedded: No
• Utilized Ic / Part: MC33887
• Primary Attributes: 5A, 5 ~ 28V, PWM to 20kHz, Active Current Limit
• Secondary Attributes: Fault Status, Sleep Mode, Proportional Current Mirror Output
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Analog Integrated Circuit Device Data
Freescale Semiconductor
>8A
6.5
[1]
[0]
[1]
[0]
[1]
[0]
[1]
[0]
0
Tri-Stated
Outputs
IN1 IN2
0.0
Figure 11. Example Short Circuit Detection Detail on Low-Side MOSFET
8.0
6.5
8.0
5.0
Hard short occurs.
(per Input Control Condition)
t
IN1 or IN2
IN2 or IN1
Outputs Operation
on Low-Side
on
MOSFET
Limiting
Current
Active
Time
Figure 10. Operating States
t
t
a
a
High Current Load Being Regulated via Constant-OFF-Time PWM
TIME
IN1 or IN2
IN2 or IN1
Tri-Stated
Outputs
Hard Short
Hard Short
Hard Output
Short Latch-OFF
Hard short is detected during t
and output is latched-off.
t
t
b
b
Overcurrent Minimum Threshold
I
Short Circuit Detect Threshold
SCL
Short Circuit Detection Threshold
Typical Current Limit Threshold
t
t
t
t
a
b
a
Short Circuit Detection Threshold
b
= Tristate Output OFF Time
= Current Limit Blank Time
= Output Constant-OFF Time
= Output Blanking Time
Detection
Detection
I
LIM
Blanking Time
Typical PWM Load
Current Limiting
Waveform
Typical Current
Limiting Waveform
Moderate Current Load
and Latch-OFF
ELECTRICAL CHARACTERISTICS
b
TIMING DIAGRAMS
33887
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