MAX20412
Automotive Low-Voltage 2-Channel Step-Down Controller
Dual-Output, High-Efficiency Step-Down Controller for Automotive SOC Core Power
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The MAX20412 is a dual-output, high-efficiency, synchronous step-down controller IC that operates with a 3.0V to 5.5V input voltage range and provides a 0.25V to 1.275V output voltage range. The controller architecture enables up to 30A of load current per phase. Channel 1 has an option to operate with two phases to deliver higher load current, making this device ideal for automotive point-of-load (PoL) and post-regulation applications.
The IC achieves ±2% output error over load, line, and temperature ranges. The IC features a 2.2MHz/1.1MHz fixed-frequency PWM mode for better noise immunity and load-transient response, and a pulse-frequency modulation mode (skip) for increased efficiency during light-load operation. The 2.2MHz frequency operation allows the use of all-ceramic capacitors and minimizes external components. The programmable spread-spectrum frequency modulation minimizes radiated electromagnetic emissions. The MAX20412 is offered with factory-preset output voltages (see the Selector Guide for options). The I2C interface supports dynamic voltage adjustment with programmable slew rates for each channel. Other features include programmable soft-start, overcurrent, and overtemperature protections.关键特性
- 2-Channel, High-Efficiency DC-DC Controller in a Small Solution Size
- 3.0V to 5.5V Operating Supply Voltage
- OUT1 Supports 60A (with Two Phases)
- OUT2 Supports 30A
- High-Precision Regulator for Applications Processors
- ±2% Output-Voltage Accuracy
- Differential Remote-Voltage Sensing
- I2C-Controlled Output Voltage: 0.25V to 1.275V in 6.25mV Steps
- Excellent Load-Transient Performance
- Programmable Compensation
- Low-Noise Features Reduce EMI
- 2.2MHz or 1.1MHz Operation
- Spread-Spectrum Option
- Frequency-Synchronization Input/Output
- Current-Mode, Forced-PWM, and Skip Operation
- Robust for the Automotive Environment
- Individual Enable Inputs and PGOOD Outputs
- Low RDS(ON) External MOSFETs
- Overtemperature and Short-Circuit Protection
- 32-Pin (5mm x 5mm) TQFN with Exposed Pad
- -40°C to +125°C Operating Temperature Range
- AEC-Q100 Qualified
应用
- 汽车
- 核心处理器系统/GPU电源
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