TDK iQM Series manual Operating Information

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Data Sheet: SuperetaTM iQM Series –Single Output Quarter Brick

Operating Information:

Over-Current Protection: The power modules have current limit protection to protect the module during output overload and short circuit conditions. During overload conditions, the power modules may protect themselves by entering a hiccup current limit mode. The modules will operate normally once the output current returns to the specified operating range. There is a roughly 2ms delay from the time an overload condition appears at the module output until the hiccup mode will occur.

Output Over-Voltage Protection: The power modules have a control circuit, independent of the main control loop, that reduces the risk of over voltage appearing at the output of the power module during a fault condition. If there is a fault in the main regulation loop, the over voltage protection circuitry will latch the power module off once it detects the output voltage condition as specified on the Electrical Data page. To remove the module from the latched condition, either cycle the input power or toggle the remote ON/OFF pin providing that over-voltage conditions have been removed. The reset time of the ON/OFF pin should be 500ms or longer.

The iQM Supereta family also offers an optional feature to allow non-latching 1- second hiccup mode over-voltage protection. Consult the TDK Innoveta technical support for details.

Thermal Protection: When the power modules exceed the maximum operating temperature, the modules will turn-off to safeguard the units against thermal damage. The module will auto restart as the unit is cooled below the over temperature threshold.

Remote On/Off: - The power modules have an internal remote on/off circuit. The user must supply an open-collector or compatible switch between the Vin(-) pin and the on/off pin. The maximum voltage generated by

the power module at the on/off terminal is 15V. The maximum allowable leakage current of the switch is 50uA. The switch must be capable of maintaining a low signal Von/off < 1.2V while sinking 1mA.

The standard on/off logic is positive logic. The power module will turn on if pin 2 is left open and will be off if pin 2 is connected to pin 3. If the positive logic circuit is not being used, terminal 2 should be left open.

An optional negative logic is available. The module will turn on if pin 2 is connected to pin 3, and it will be off if pin 2 is left open. If the negative logic feature is not being used, pin 2 should be shorted to pin 3.

©2004-2006 TDK Innoveta Inc.

℡ (877) 498-0099

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iQM 1.5V/70A Datasheet 8/4/2006

 

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Contents Optional Features Standard FeaturesProduct Offering Ordering informationOption Table Pin Assignment Mechanical SpecificationAbsolute Maximum Ratings Input CharacteristicsIQM48070A015V-000 through -009 1.5V, 70A Output Electrical DataInput Voltage Electrical CharacteristicsRup = 5.11x1.5 ⋅ 100 + 5 − 511 − 10.22 ⋅ K 225x5 Thermal measurement location Thermal PerformanceThermal Management Wind Tunnel Test Setup Figure10/15 Operating Information = 5.11⋅ Reliability Circuit to increase output voltageLin Vin Vout Cext RLoad Ground Plane Input/Output Ripple and Noise Measurements QualityWarranty Safety Considerations

iQM Series specifications

The TDK iQM Series represents a significant advancement in the realm of power inductors, catering specifically to applications that demand high efficiency and reliability. Designed for use in a variety of devices, including smartphones, tablets, and power supply systems, the iQM Series is tailored to meet the rigorous demands of modern electronics.

One of the standout features of the iQM Series is its compact size. The inductors are designed to maximize performance while minimizing space, making them ideal for applications where every millimeter counts. This compact design is achieved without compromising on performance, offering high inductance values that are essential for stable operation in power conversion circuits.

TDK has integrated innovative materials in the iQM inductors, utilizing a composite magnetic core that enhances energy efficiency and thermal performance. This ensures that the inductors operate effectively even at higher currents, reducing losses associated with heat generation. As a result, the iQM Series boasts a low DC resistance, contributing to improved overall system efficiency and enabling reliable operation in demanding environments.

Another notable characteristic of the iQM Series is its broad range of inductance values, which allows designers to select the most suitable inductor for their specific application requirements. This adaptability, combined with a wide operating temperature range, enables the iQM inductors to function efficiently in various climatic conditions and across different electronic devices.

Furthermore, the iQM Series is designed with a focus on minimizing noise. Advanced construction techniques have been employed to reduce electromagnetic interference, which is crucial for maintaining signal integrity in high-frequency applications. This makes the iQM Series particularly well-suited for power management circuits used in applications like DC-DC converters and power supply solutions.

The iQM Series also boasts impressive saturation current ratings, allowing for reliable performance even in peak current scenarios. This feature is essential for applications where transient loads can cause inductors to experience higher than normal currents. The ability to handle such conditions without saturating ensures longer device life and better performance under stress.

In summary, the TDK iQM Series of power inductors stands out due to its compact design, high efficiency, versatile inductance values, and effective noise reduction features. These qualities make iQM inductors an excellent choice for engineers looking to enhance their power management circuits in today's technologically advanced devices. With TDK's commitment to innovation and quality, the iQM Series is set to play a vital role in the future of electronics.
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