Automotive Intelligent Power Switches

Page Contents:   [ Featured Products | Datasheets | Application Notes | Buy Now ]

Intelligent Power Switches (IPS) from International Rectifier integrate a low RDS(on) output HEXFET® power MOSFET into a single package with protection and control circuits, making them the most rugged, efficient and compact devices available for automotive loads in harsh environments. All devices are qualified to AEC Q100 Qualification standard and devices with “PBF” suffix are RoHS-compliant according to the European Union RoHS Directive.

Built-in protection features, like over-temperature, over-current and active inductive energy clamp protect against short circuits, stalled motors and excessive ambient temperature. Designed to safely handle ordinary overload conditions, as well as several extraordinary conditions, including loss of ground, load dump and reverse battery, IPS devices eliminate switch failures with the best efficiency and no addition in part count. Over-design for low occurrence fault situations are minimized. The embedded charge pump makes the interface to the microcontroller very simple with full logiclevel compatibility.

The double level shifter circuitry that drives the MOSFET in the High-Side Switch (HSS) family provides immunity from large offsets between the logic ground and the load ground and short switching times. Internal slew rate control for turn-on/off and the use of a low noise charge pump means lower EMI, with ground noise generation of less than 10mA.

 

ADVANTAGES Most rugged, efficient and compact switches for the harshest environments Provides charge pump and full switch protection with no additional circuitry Up to 30% smaller PCB area than a discrete charge pump circuit More than 1000 times longer life than electromechanical relays due to self protection and absence of wear and tear Up to 20% lower on-resistance than relays reduces heat dissipation and heat sinks

 

FEATURES 40V MOSFET with embedded protection and charge pump in a single package 75V capable technology for 24V battery truck and industrial applications As low as 7MΩ RDS(on) in the D2Pak / TO-220 footprint with current sense feedback Integrated low EMI charge pump allows direct logic input Open-load detection (HSS) Diagnostic feedback via the input pin on low side devices Over-current protection Shutdown Current limiting Over-temperature protection ESD protection Active clamp for inductive loads

APPLICATIONS Ideal replacement for electromechanical relays Automotive Transmission controls Junction boxes Electronic stability controls Anti-lock brakes, traction controls Diesel and gas direct injection Pump motors, radiator fans Head diesel glow plugs Lamps Industrial Automation Programmable Logic Controllers (PLC) Distributed and closed-loop control systems DC loads (12V DC and 24V DC), valves, solenoids, heaters DC brushed motors

 

 

For a complete listing of all International Rectifier’s offerings from Future Electronics, please click here.

 

The IR331x family are highly efficient high-side power switches that feature integrated programmable over-current protection, over-temperature protection and active overvoltage clamping. In addition, the IR331x family provides a current feedback output with +/- 5% accuracy over the full operating temperature range (@max. load current) compared to about +/-20% for competitive devices. This accuracy combined with integrated programmable over-current shutdown enables the IR331x switches to protect not only itself but also the load by optimizing the shutdown threshold.

The current feedback feature allows precise current monitoring and control for a very cost effective solution in many applications. With +/- 5% accuracy and 100kHz bandwidth, the current feedback signal may be used by a standard PWM control IC, ASIC or microcontroller to implement high performance functionality from wide bandwidth closed-loop current control of a motor load to basic load fault detection. Implementing current sense functions with the IR331x family eliminates the power loss of a shunt resistor or cost of a Hall sensor.

The IR331x devices are specifically designed for automotive 14V applications where a protection is required in order to prevent the IC and the application from damage in case of short circuits on the line, or by overload. The integrated over-temperature protection and programmable over-current shutdown features save additional fuses and wiring harness, improving the system reliability. Additional integrated features like ESD, reverse battery and active clamp guarantee protection even under harsh automotive operating conditions.

 

 

FEATURES Integrated charge pump and gate drive for high-side applications Load current feedback Programmable over-current shutdown Over-temperature shutdown Active clamp Reverse battery protection Reverse current capability ESD protection +/- 5% current sense feedback accuracy 100 kHz current feedback bandwidth Very low RDS(ON) fully protected high-side switch Programmable current shutdown Simplifies circuits and increases reliability

APPLICATIONS Automotive 14V applications Body modules Intelligent glow-plug Auxiliary PTC heater Engine cooling fan Interior fan control

 

 

IR331x Block Diagram

The input signal is referenced to VCC. When the input voltage V_CC–V_IN exceeds the specified threshold, the output power MOSFET is turned on. When the V_CC–V_IN is lower than the specified VIL threshold, the output MOSFET is turned off. Any fault will disable the output MOSFET until VIN is cycled off, resetting the fault latch. A current proportional to the power MOSFET current is sourced to the IFB pin and allows easy measurement of the output current. Over-current shutdown threshold occurs at VIFB – V_IN > 4V. Programming the over-current threshold is achieved by choosing RIFB.

 

 

 

IR331x Operation

The bottom traces show the load current and the diagnostic current (vertical scale is adjusted to match.)

 

 

 Featured Products

Part Number		Description	Data Sheet	App. Notes
IPS1011PBF		Intelligent Power Switch 1 Channel Low Side Driver in a TO-220AB Package
IPS1011RPBF		Intelligent Power Switch 1 Channel Low Side Driver in a D-Pak Package
IPS1011SPBF		Intelligent Power Switch 1 Channel Low Side Driver in a D2-Pak Package
IPS1021PBF		Intelligent Power Switch 1 Channel Low Side Driver in a TO-220AB Package
IPS1021RPBF		Intelligent Power Switch 1 Channel Low Side Driver in a D-Pak Package
IPS1021SPBF		Intelligent Power Switch 1 Channel Low Side Driver in a D2-Pak Package
IPS1031PBF		Intelligent Power Switch 1 Channel Low Side Driver in a TO-220AB Package
IPS1031RPBF		Intelligent Power Switch 1 Channel Low Side Driver in a D-Pak Package
IPS1031SPBF		Intelligent Power Switch 1 Channel Low Side Driver in a D2-Pak Package
IPS1041LPBF		Intelligent Power Switch Single/Dual Channel Low Side Driver in a SOT-223 Package
IPS1042GPBF		Intelligent Power Switch Single/Dual Channel Low Side Driver in an SO-8 Package
IPS1051LPBF		Intelligent Power Switch Single/Dual Channel Low Side Driver in a SOT-223 Package
IPS1052GPBF		Intelligent Power Switch Single/Dual Channel Low Side Driver in an SO-8 Package
IPS2041LPBF		Intelligent Power Switch 1 Channel Low Side Driver in a SOT-223 Package
IPS2041RPBF		Intelligent Power Switch 1 Channel Low Side Driver in a D-Pak Package
IPS6011PBF		Intelligent Power Switch 1 Channel High Side Driver in a TO-220 Package
IPS6011RPBF		Intelligent Power Switch 1 Channel High Side Driver in a D-Pak Package
IPS6011SPBF		Intelligent Power Switch 1 Channel High Side Driver in a D2-Pak Package
IPS6021PBF		Intelligent Power Switch 1 Channel High Side Driver in a TO-220 Package
IPS6021RPBF		Intelligent Power Switch 1 Channel High Side Driver in a D-Pak Package
IPS6021SPBF		Intelligent Power Switch 1 Channel High Side Driver in a D2-Pak Package
IPS6031PBF		Intelligent Power Switch 1 Channel High Side Driver in a TO-220 Package
IPS6031RPBF		Intelligent Power Switch 1 Channel High Side Driver in a D-Pak Package
IPS6031SPBF		Intelligent Power Switch 1 Channel High Side Driver in a D2-Pak Package
IPS6041RPBF		Intelligent Power Switch 1 Channel High Side Driver in a D-Pak Package
IPS7091GPBF		Intelligent Power Switch 1 Channel High Side Driver in a SO-8 Package
IR3313PBF		Programmable Current Sense High Side Switch in a TO-220FL Package
IR3313SPBF		Programmable Current Sense High Side Switch in a 5-Lead D2-Pak Package
IR3314PBF		Programmable Current Sense High Side Switch in a 5-Lead TO-220 Package
IR3314SPBF		Programmable Current Sense High Side Switch in a 5-Lead D2-Pak Package
IR3315PBF		Programmable Current Sense High Side Switch in a 5-Lead TO-220 Package
IR3315SPBF		Programmable Current Sense High Side Switch in a 5-Lead D2-Pak Package
IR3316SPBF		Low EMI Current Sense High Side Switch in a 5-Lead D2-Pak Package

refers to New Product Introduction