First intelligent pre-FET driver with
dynamic fault threshold
Product features
- Serial or parallel control interface
- Independent fault detection/protection
- Sleep state mode
- Serial interface feedback
- Auto re-try mode
- Cascadable serial interface
The TPIC44H01, a four-channel high-side pre-FET driver, is a new addition to the Power+ Control family to compliment the existing line of low-side pre-FET drivers. The device is the first pre-driver to provide serial or parallel input interface to control four external NMOS power FETs. It is designed for low frequency switching of resistive or inductive
loads including incandescent bulbs and solenoids.
The TPIC44H01 is also the first high-side pre-FET driver with diagnostics, that is compliant to federally mandated OBD II,
allowing for decreased costs and reduced downtimes in automotive applications. Each channel has independent open-load detection (2.4 V) and over-current and short-to-ground (2.35 V) detection/protection with fault status reporting via the serial interface. For increased protection and reliability, the device has dynamic over-current threshold ideal for incandescent bulb applications with long inrush current. Over-voltage lockout (30 V) circuitry provides additional protection for the device and the external FETs.
In addition, the TPIC44H01 has a low-current sleep state (45 ľA) that is suitable for low power applications. Multiple
TPIC44H01s may be cascaded via the serial interface to reduce I/O lines from the host controller. The device is available
in surface-mounted (TSSOP) packaging.
Typical applications
Automotive:
- Headlamps
- Turn signals
- Daytime lights
- Interior lights
- Transmission
- Engine controls
- Anti-lock brakes
- Active suspension
- Fuel injectors
- Door locks
Industrial:
- Process control systems
- Robotics
- Electronic data processing
PCs:
- Battery switching/management
Vol 29 November, 1998
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Inside:
Showcase (Volume 29) is available in HTML and PDF format. - 330KB
