MM908E625ACDWB/R2 Motorola, MM908E625ACDWB/R2 Datasheet - Page 30

• Manufacturer Part Number: MM908E625ACDWB/R2
• Description: Integrated Quad Half H-Bridge with Power Supply / Embedded MCU / and LIN Serial Communication
• Manufacturer: Motorola

HBx_H—High-Side On/Off Bits
clears the HBx_H bits.
Half-Bridge Current Limitation
current feature. This features is realized by a pulse width
modulation on the low-side MOSFET. The pulse width
modulation on the outputs is controlled by the FGEN input and
908E625
30
These read/write bits turn on the high-side MOSFETs. Reset
Each low-side MOSFET offers a current limit or constant
Low-Side Output
Coil Current
(MCU PWM
FGEN Input
1 = High-side MOSFET turned on for half-bridge output x.
0 = High-side MOSFET turned on for half-bridge output x.
Half-Bridge
Signal)
Minimum 50 µs
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 16. Half-Bridge Current Limitation
Go to: www.freescale.com
the load characteristics. The FGEN input provides the PWM
frequency, whereas the duty cycle is controlled by the load
characteristics.
PWM is 0.1 kHz to 20 kHz.
Functionality
selected current limit was detected. The 908E625 offers five
different current limits (refer to
values). The low-side MOSFET switches on again if a rising
edge on the FGEN input was detected
The recommended frequency range for the FGEN and the
Each low-side MOSFET switches off if a current above the
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
Table
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.
5, page 33, for current limit
(Figure
16).
t (µs)
t (µs)
t (µs)