At jul430, system/unit 430 logged a “hot” state exceeding normal operating temperature by X%.
At the recent Embedded World conference, a representative from the manufacturer (speaking anonymously) confirmed that a revision, JUL430B, is in development. Key improvements include:
Until then, users of the current JUL430 must accept that "hot" is part of the package. With proper heatsinking, airflow, and firmware tuning, the JUL430 delivers class-leading performance—just keep a fan nearby. jul430 hot
If you are designing or using a device built around the JUL430, you cannot ignore its thermal output. Here are the most effective countermeasures:
The JUL430 measures only 14mm x 14mm, yet it houses over 2.8 billion transistors. When operating at 2.1 GHz (boost clock), these transistors switch billions of times per second. Every switching event generates heat due to resistive losses (I²R) and dynamic power consumption (P = C * V² * f). With a voltage of 0.98V at full load, the power density approaches 2.3 W/mm²—higher than many laptop CPUs. At jul430, system/unit 430 logged a “hot” state
Early production batches of the JUL430 reportedly used a cheaper, silicone-based thermal interface material between the die and the integrated heat spreader (IHS). This TIM has a thermal conductivity of only 2.8 W/m·K. Under sustained loads, heat builds up faster than it can be wicked away, creating localized "hot spots" that can exceed 95°C while the IHS itself remains at 75°C.
Date of Event: July 4
Time/Identifier: 430 (or 4:30)
Severity: Hot (Critical / High Temp / Overload) Until then, users of the current JUL430 must
There is no single reason for the JUL430's heat generation. Instead, three primary factors contribute to its high operating temperature:
Because of its high voltage in a compact size, this battery is used in devices that require a short burst of high power: