explain
Lp87524b / J / p-q1 is designed to meet the power management requirements of the latest processors and platforms in various automotive power applications. The device consists of four Buck DC / DC converter cores configured with four single-phase outputs. The device is controlled by I2C compatible serial interface and enable signal. Automatic PFM / PWM (auto mode) operation maximizes efficiency over a wide output current range.
Lp87524b / J / p-q1 supports remote voltage sensing and can compensate the IR voltage drop between the regulator output and the load point (POL), so as to improve the accuracy of the output voltage. In addition, the switching clock can be forced into PWM mode and synchronized with the external clock to minimize interference. Lp87524b / J / p-q1 device supports load current measurement without adding external current sensing resistor.
In addition, the lp87524b / J / p-q1 also supports programmable start and shutdown delays and timing synchronized with the enable signal. These sequences may also include GPIO signals for controlling external voltage regulators, load switches, and processor resets. During startup and voltage change, the device will control the output conversion rate, so as to minimize the output voltage overshoot and surge current.
characteristic
• meet automotive application requirements
• have the following results according to aec-q100 standard:
– device temperature level 1:
-Ambient operating temperature range from 40 ℃ to + 125 ℃
• input voltage: 2.8V to 5.5V
• output voltage: 0.6V to 3.36v
• four high efficiency Buck DC / DC converter cores:
– total output current up to 10A
– output voltage conversion rate 3.8mv/µ s
• 4MHz switching frequency
• spread spectrum mode and phase interleaving
• configurable general purpose I / O (GPIO)
• I2C compatible interface, which supports four modes: Standard (100kHz), fast (400kHz), fast + (1MHz) and high speed (3.4MHz)
• interrupt function with programmable mask
• programmable power supply normal signal (PGOOD)
• output short circuit and overload protection
• overheating warning and protection
• overvoltage protection (OVP) and undervoltage lockout (UVLO)
Apply
Automotive infotainment system, instrument cluster, radar and camera power application
