MOSFETs with built-in temperature sensing protect automotive electrical systems
22 November 2000
Power Electronics / Power Management
International Rectifier is offering its first TempSENSE HEXFET power MOSFET, which can provide cost-effective temperature sensing for automotive system protection by using an on-chip temperature sensing diode. The device provides a simple and cost-effective alternative to more complex and expensive intelligent solutions, claims IR.
The IRLBD59N04E is a 40 V, 20 mOhm, N-channel MOSFET. Temperature sensing is provided by two anti-parallel electrically isolated poly-silicon diodes. The diode's forward voltage falls to approximately 0,5 V with a bias current of 250 mA when the MOSFET reaches its maximum permitted temperature value. The voltage feedback can be used with a monitoring circuit to turn the MOSFET off, protecting the application circuit from current overload and excessive temperature. Additionally, back-to-back zener diodes protect the IRLBD59N04E gate-to-source path from electrostatic discharge up to 2000 V.
According to the manufacturer the device provides cost-effective temperature sensing for automotive system protection. It adds that the logic-level device can be configured to work with existing microcontrollers with minimum circuit re-design. This provides a simple and cost-effective alternative to more complex and expensive intelligent power switches.
The device will meet the rigid Q101 automotive stress test qualification procedure at 175°C. The Q101 certification process is designed to ensure high reliability component performance in harsh automotive environments. The IRLBD59N04E is therefore well suited for anti-lock brakes (ABS) and fuel injection systems, as well as power door locks, window lifts and car audio circuits.
The device is rated: Rds(on) is 18 mOhm at 10 V and 20 mOhm at 5 V; current at 25°C is 59 A and B V(dss) is 59 V.
Further reading:
Quality batteries are critical for IIoT
Uniross Batteries
Power Electronics / Power Management
Batteries intended for use in industrial operations must indeed offer complete reliability under extreme environmental conditions, resistance to vibration and harsh environments.
Read more...
12 kW hybrid inverter
Power Electronics / Power Management
Sungrow recently unveiled its next-generation residential energy storage solution, expanding its power range from 5 kW to 12 kW with the introduction of the new MG12RL hybrid inverter.
Read more...
40 W and 75 W railway DC/DC converter
Brabek
Power Electronics / Power Management
RECOM has announced two new cost-efficient DC/DC converters for the rail market with an ultra-wide 11:1 input range to cover all nominal input voltages from 24 to 110 V DC.
Read more...
Power modules for solid-state transformers
RS South Africa
Power Electronics / Power Management
Microchip’s new 3,3 kV silicon carbide modules deliver the required thermal performance and efficiency for SSTs to increase power available for token generation.
Read more...
Solving South African power problems with locally built intelligence
Editor's Choice Power Electronics / Power Management
Smart metering infrastructure in South Africa remains patchy. The rollout has been slow, coverage is inconsistent, and for the most part, granular per-unit measurement simply does not exist.
Read more...
Wide range power module
Power Electronics / Power Management
The latest DC-DC modules from Würth Elektronik are characterised by high resilience to voltage transients on the 24 V bus and an extremely wide input-voltage range from 3,5 V to 38 V.
Read more...
Selecting primary batteries for maximum service life
Uniross Batteries
Power Electronics / Power Management
Primary batteries play an important role in IoT applications. Designed for longevity, they have a high-energy capacity and are often used in standalone applications where charging is impractical or impossible.
Read more...
4 kW e-mobility DC-DC converter
Brabek
Power Electronics / Power Management
The RECOM RMOD4000 series of compact, plug-and-play DC-DC converters is a cost-effective solution to provide isolated 14 V, 28 V, or 56 V DC network rails from a high input voltage between 180 and 950 V DC.
Read more...
Aluminium case upgrade boosts performance
Vepac Electronics
Power Electronics / Power Management
The SQBF Quarter Brick 300 W DC to DC Converter is now available in a newly upgraded metal case designed to deliver improved durability and superior electrical performance across demanding applications.
Read more...
Extending the range of power converters
RS South Africa
Power Electronics / Power Management
Power Integrations recently announced a breakthrough in flyback topology extending the power range of flyback converters to 440 W - well beyond the limits that traditionally required more complex resonant and LLC topologies.
Read more...
printer friendly version