ZAMC4100 Datasheet, PDF (65/155 Pages) Integrated Device Technology – Actuator and Motor Controller

ZAMC4100 Datasheet
HBxCSHEN ¹⁾ HBxCSLEN ¹⁾ HByLEN ¹⁾
HBxOSF ¹⁾
Description ²⁾
0
1
1
0
1
0
0
0
Invalid.
0
1
0
1
1) In the case of a load connected between two half-bridges (full-bridge configuration), “x” corresponds to one of the half-bridges (x = 1 to 4) and “y”
corresponds to the other half-bridge (y = 1 to 4). In the case of a load connected between the output of the driver and one of the supply rails, the column
“HByLEN” is not applicable. See Table 3.13 for more information about the HByLEN bits.
2) Important: The result of the diagnostic procedure is correct only if the drivers involved are switched-off during the diagnostic procedure and are turned
on only when explicitly required according to this table.
3) The diagnostic procedure for full-bridge configuration includes enabling one of the low-side drivers, which makes a complete diagnostic of the load
possible.
3.9. High-Side Drivers
Within the SBC, there are 4 high-side drivers for HS1 to HS4. Figure 3.14 shows the block diagram for the each
driver. It is essentially the same as the half-bridge but without the low-side MOSFET.
Figure 3.14 Structure of High-Side Drivers
HSx
PWMEN
From PWM
Block
HSxEN
OVT Reset
OVTIF
CPVEIF
OVIF
UVIF
HSxOSF
Charge
Pump
Limit
Driver H
HSxOCIF
VSS
20µs Counter
Integrator
OCH
Detect
VDDE
HSxCSEN
Open/Short
Detect
CS
HSx pin
RLOAD
VSS
Features of High-Side Drivers:
• Separate enable bit for each driver.
• Separate PWM enable bit for each driver.
• Each NMOS has over-current detection and protection circuitry. The over-current event automatically
disables the driver.
• If an over-voltage or under-voltage condition is detected at VDDE pin the drivers are automatically disabled.
• Each driver has diagnostic circuitry for detecting an open or short in the output load.
© 2016 Integrated Device Technology, Inc.
65
January 26, 2016