Analog Integrated Circuit Device Data

Freescale Semiconductor

9

33899

ELECTRICAL CHARACTERISTICS

DYNAMIC ELECTRICAL CHARACTERISTICS

DYNAMIC ELECTRICAL CHARACTERISTICS

Table 4. Dynamic Electrical Characteristics

Characteristics at -40

Characteristic

Symbol

Min

Typ

Max

Unit

PWM Frequency(8)

–

–

11

kHz

PWM/Output Duty Cycle Accuracy

Frequency = 10 kHz, RS = 10 k

Ω, Slew Time = 1X, Duty cycle = 50%

-4.5

–

4.5

%

Short-circuit Filter (S0 and S1)

4.0

–

11

μs

Minimum PWM Low Pulse Width

–

–

0.2

μs

Low Side Comparator One Shot

Pulse Duration After a Low Side Comparator Trip

5.0

–

10

μs

Low Side Comparator Blank Time

Blanking Time After a Low Side Comparator Pulse(9)

5.0

–

10

μs

Over-temperature Shutdown Filter (time before Die Temp bit is set)(8)

5.0

–

13.5

μs

Enable Lead Time(8)

140

–

–

ns

Enable Lag Time(8)

50

–

–

ns

Delay Until Output Shuts OFF

Short-circuit Detection or EN1 Falling or EN2 Falling Until H-Bridge Disables

–

–

6.0

μs

Delay Until Output Turns ON

EN1 rising or EN2 rising Until H-Bridge Enables

–

–

5.0

μs

Dead Timer(9)

Time Between High Side MOSFET and Low Side MOSFET Transition

1.0

–

3.0

μs

Open Load Fault Delay

Duration of Fault Condition Until Fault Gets Latched In

175

–

400

μs

Over-voltage Shutdown Filter

100

–

200

μs

Sleep Recovery Time(8),(9),(10)

–

150

–

μs

Slew Time S0 and S1(11)

(Output Load = 5.0 mH and 1.6

Slew Mode = 1X

RS= 50 k

Ω

RS = 10 k

Ω, Short

Slew Mode = 2X

RS = 50 k

Ω

RS = 10 k

Ω, Short

Slew Mode = 4X

RS = 50 k

Ω

RS = 10 k

Ω, Short

1.6

0.2

2.8

0.5

5.0

1.2

–

–

–

–

–

–

3.2

0.8

6.3

1.5

12.8

3.0

μs

Notes

8.

Design information

9.

Guaranteed by characterization, not production tested.

10.

Sleep recovery time is the time from EN going high until the outputs are ready to respond to input. This time is dependent on the recovery

clearing of the POR condition (See +3.3 V Input (VCCL) on page 12).

11.

By design, if the RS input is left open, the slew time is the same as when shorted to GND. However, this is a high-impedance input and

will be susceptible to external noise sources unless terminated appropriately. It is highly recommended to terminate this pin with either

a ground or one of the program resistors .