MC33926 Datasheet
Table Of Contents
- 5.0 A Throttle Control H-Bridge
- Figure 1. 33926 Simplified Application Diagram
- Internal Block Diagram
- Pin Connections
- Electrical Characteristics
- Table 2. Maximum Ratings
- Table 3. Static Electrical Characteristics
- Table 4. Dynamic Electrical Characteristics
- Figure 4. Output Delay Time
- Figure 5. Disable Delay Time
- Figure 6. Output Switching Time
- Figure 7. Current Limit Blanking Time and Constant-OFF Time
- Figure 8. Short-circuit Detection Turn-OFF Time tFAULT
- Figure 9. Output Current Limiting Foldback Region
- Functional Description
- Functional Internal Block Description
- Functional Device operation
- Typical applications
- Packaging
- Additional Documentation
- Table 6. Thermal Performance Comparison
- Figure 15. Surface Mount for Power PQFN with Exposed Pads
- Figure 16. Thermal Test Board
- Table 7. Thermal Resistance Performance
- Figure 17. Device on Thermal Test Board RqJA
- Figure 18. Transient Thermal Resistance RqJA, 1.0 W Step response, Device on Thermal Test Board Area A = 600 (mm2)
- Revision History
Analog Integrated Circuit Device Data
16 Freescale Semiconductor
33926
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
LOGIC COMMANDS AND REGISTERS
Figure 12. 33926 Power Stage Operation
Table 5. Truth Table
The tri-state conditions and the status flag are reset using D1 or D2. The truth table uses the following notations: L = LOW, H =
HIGH, X = HIGH or LOW, and Z = High Impedance. All output power transistors are switched off.
Device State
Input Conditions Status Outputs
EN D1 D2 IN1 IN2 SF OUT1 OUT2
Forward H L H H L H H L
Reverse H L H L H H L H
Free Wheeling Low H L H L L H L L
Free Wheeling High H L H H H H H H
Disable 1 (D1) H H X X X L Z Z
Disable 2 (D2) H X L X X L Z Z
IN1 Disconnected H L H Z X H H X
IN2 Disconnected H L H X Z H X H
D1 Disconnected H Z X X X L Z Z
D2 Disconnected H X Z X X L Z Z
Under-voltage Lockout
(30)
H X X X X L Z Z
Over-temperature
(31)
H X X X X L Z Z
Short-circuit
(31)
H X X X X L Z Z
Sleep Mode EN L X X X X H Z Z
EN Disconnected Z X X X X H Z Z
Notes
30. In the event of an under-voltage condition, the outputs tri-state and status flag is SET logic LOW. Upon under-voltage recovery, status
flag is reset automatically or automatically cleared and the outputs are restored to their original operating condition.
31. When a short-circuit or over-temperature condition is detected, the power outputs are tri-state latched-OFF, independent of the input
signals, and the status flag is latched to logic LOW. To reset from this condition requires the toggling of either D1,
D2, EN, or V
PWR
.
OUT1 OUT2
PGND
V
PWR
V
PWR
PGND
LOAD
Load
Current
Forward
OFF
ON
ON
OFF
OUT1 OUT2
PGND
OFF
ON
ON
OFF
V
PWR
V
PWR
PGND
LOAD
Load
Current
Reverse
OUT1 OUT2
PGND
V
PWR
V
PWR
PGND
LOAD
Load
Current
High-Side Recirculation
(Forward)
ON
OFF
ON
OFF
OUT1 OUT2
PGND
V
PWR
V
PWR
PGND
LOAD
Load
Current
Low-Side Recirculation
(Forward)
ON ON
OFF OFF