参数资料
型号: MC33932VW
厂商: Freescale Semiconductor
文件页数: 9/28页
文件大小: 0K
描述: IC H-BRIDGE THROTTLE CTRL 44HSOP
标准包装: 30
类型: 半桥
输入类型: 非反相
输出数: 2
导通状态电阻: 120 毫欧
电流 - 峰值输出: 5A
电源电压: 8 V ~ 28 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 44-BSSOP(0.433",11.00mm 宽)裸露焊盘
供应商设备封装: 44-HSOP
包装: 管件
ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Table 4. Dynamic Electrical Characteristics
Characteristics noted under conditions 5.0 V ? V PWR ? 28 V, - 40 ? C ? T A ? 125 ? C, GND = 0 V, unless otherwise noted. Typical
values noted reflect the approximate parameter means at T A = 25°C under nominal conditions, unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
TIMING CHARACTERISTICS
PWM Frequency (20)
Maximum Switching Frequency During Current Limit Regulation (21)
f PWM
f MAX
11
20
kHz
kHz
Output ON Delay (22)
t D ON
? s
V PWR = 14 V
Output OFF Delay (22)
V PWR = 14 V
t D OFF
18
12
? s
I LIM Output Constant-OFF Time (23) (25)
I LIM Blanking Time (24) (25)
Disable Delay Time (26)
t A
t B
t D DISABLE
15
12
20.5
16.5
32
27
8.0
? s
? s
? s
Output Rise and Fall Time
t F , t R
1.5
3.0
8.0
? s
Power-ON Delay Time
Short-circuit / Over-temperature Turn-OFF (Latch-OFF) Time
t FAULT
t POD
1.0
8.0
5.0
? s
ms
Output MOSFET Body Diode Reverse Recovery
Charge Pump Operating Frequency (29)
Time (29)
t RR
f CP
75
100
7.0
150
ns
MHz
Notes
20. The maximum PWM frequency should be limited to frequencies < 11 kHz in order to allow the internal high side driver circuitry time to
fully enhance the high side MOSFETs.
21. The internal current limit circuitry produces a constant-OFF-time Pulse Width Modulation of the output current. The output load’s
inductance, capacitance, and resistance characteristics affect the total switching period (OFF-time + ON-time), and thus the PWM
frequency during current limit.
22.
* Output Delay is the time duration from 1.5 V on the IN1 or IN2 input signal to the 20% or 80% point (dependent on the transition direction)
of the OUT1 or OUT2 signal. If the output is transitioning HIGH-to-LOW, the delay is from 1.5 V on the input signal to the 80% point of
the output response signal. If the output is transitioning LOW-to-HIGH, the delay is from 1.5 V on the input signal to the 20% point of the
output response signal. See Figure 4 , page 10 .
23. The time during which the internal constant-OFF time PWM current regulation circuit has tri-stated the output bridge.
24. The time during which the current regulation threshold is ignored so that the short-circuit detection threshold comparators may have time
to act.
25. Parameter guaranteed by characterization.
26.
* Disable Delay Time measurement is defined in Figure 5 , page 10 .
27. Rise Time is from the 10% to the 90% level and Fall Time is from the 90% to the 10% level of the output signal with V PWR = 14 V, ?
R LOAD = 3.0 ohm. See Figure 6 , page 10 .
28.
29.
Load currents ramping up to the current regulation threshold become limited at the I LIM value (see Figure 7 ). The short-circuit currents
possess a di/dt that ramps up to the I SCH or I SCL threshold during the I LIM blanking time, registering as a short-circuit event detection and
causing the shutdown circuitry to force the output into an immediate tri-state latch-OFF (see Figure 8 ). Operation in Current Limit mode
may cause junction temperatures to rise. Junction temperatures above ~160 ? C will cause the output current limit threshold to “fold back”,
or decrease, until ~175 ? C is reached, after which the t LIM thermal latch-OFF will occur. Permissible operation within this fold back region
is limited to non-repetitive transient events of duration not to exceed 30 seconds (see Figure 9 ).
Parameter is Guaranteed By Design.
33932
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
9
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