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  4. Enhanced LLC Controller HR1002A with Robust Adaptive Deadtime Adjustment and Off-Resonance Protection (Monolithic Power Systems, Inc.)
Enhanced LLC Controller HR1002A with Robust Adaptive Deadtime Adjustment and Off-Resonance Protection-HR1002A
Enhanced LLC Controller HR1002A with Robust Adaptive Deadtime Adjustment and Off-Resonance Protection-Monolithic Power Systems, Inc.

Enhanced LLC Controller HR1002A with Robust Adaptive Deadtime Adjustment and Off-Resonance Protection
Monolithic Power Systems, Inc.

Monolithic Power Systems, Inc.'s Response Status

Response Rate

100.0%

Response Time

15.6hours

Relatively Fast Response

About This Product

■Summary

The HR1002A is an enhanced LLC controller that provides robust adaptive dead time adjustment (ADTA) and resonance displacement protection (CMP) in addition to improved functional surge performance. ADTA automatically inserts dead time between two complementary gate outputs. This is ensured by keeping the output off while sensing the dV/dt current of the half-bridge switching node. ADTA simplifies design, reduces EMI, and increases efficiency. The HR1002A incorporates off-resonance protection to prevent potentially destructive off-resonance switching if the output is shorted or severely overloaded. This feature protects the MOSFET during abnormal conditions and provides a robust converter. The HR1002A has a configurable oscillator that sets both maximum and minimum switching frequencies. To prevent excessive inrush current, it starts at the maximum programmed switching frequency and decays until the control loop takes over. The HR1002A enters controlled burst mode under light negative conditions to minimize power consumption and enhance output regulation. Extensive protection features include two-level overcurrent protection (OCP) with externally latched shutdown, automatic recovery, power recovery and power outage, resonance removal protection (CMP), and overtemperature protection (OTP). The HR1002A requires minimal external components and is available in a SOIC16-15 package.

■Features and benefits

・Overcurrent protection (OCP) with configurable delay to improve surge performance ・Adaptive dead time adjustment (ADTA) ・Resonance loss protection (CMP) ・50% duty cycle, variable frequency control of resonant half-bridge converter ・600V high-side gate driver with integrated bootstrap diode, precision oscillator, and high dV/dt tolerance - Operates up to 600kHz ・Two-level overcurrent protection (OCP): frequency shift and latching shutdown with configurable duration ・Latching of disable input for easy protection ・Remote on/off control and brown-out protection through BO ・Configurable burst mode operation under light load conditions ・Non-linear soft start for monolithic output voltage rise

  • Product

    Enhanced LLC Controller HR1002A with Robust Adaptive Deadtime Adjustment and Off-Resonance Protection

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1 Models of Enhanced LLC Controller HR1002A with Robust Adaptive Deadtime Adjustment and Off-Resonance Protection

Image Part Number Price (excluding tax) Control Method High-Voltage Start-Up Type Typical Pmax (W) Package (mm)
Enhanced LLC Controller HR1002A with Robust Adaptive Deadtime Adjustment and Off-Resonance Protection-Part Number-HR1002A

HR1002A

Available upon quote

Analog

No

Resonant Controller

600

SOIC-16-15

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About Company Handling This Product

Monolithic Power Systems, Inc.

Response Rate

100.0%

Response Time

15.6hrs

Company Overview

Monolithic Power Systems (MPS), founded in 1997 and headquartered in San Jose, California, is a manufacturer o...

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