mm908e625 Freescale Semiconductor, Inc, mm908e625 Datasheet - Page 33

• Manufacturer Part Number: mm908e625
• Description: Integrated Quad Half H-bridge With Power Supply, Embedded Mcu, And Lin Serial Communication
• Manufacturer: Freescale Semiconductor, Inc

OFFSET CHOPPING
set, HB1 and HB2 will continue to switch on the low-side
MOSFETs with the rising edge of the FGEN signal and HB3
and HB4 will switch on the low-side MOSFETs with the falling
Analog Integrated Circuit Device Data
Freescale Semiconductor
Low-Side Output
If bit OFC_EN in the H-Bridge Control Register (HBCTL) is
Coil Current
FGEN Input
(MCU PWM
Half-Bridge
Signal)
Minimum 50 µs
Figure 18. Half-Bridge Current Limitation
feature allows the reduction of EMI due to a reduction of the
di/dt
edge on the FGEN input. In step motor applications this
(Figure
19).
LOGIC COMMANDS AND REGISTERS
FUNCTIONAL DEVICE OPERATION
H-Bridge low-side
MOSFET will be switched
off if select current limit is
reached.
H-Bridge low-side
MOSFET will be turned on
with each rising edge of
the FGEN input.
t
t
t
908E625
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