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CXAC85263: high integration half Bridge Drive Controller Innovation high power supply designlQu嘉泰姆

In the field of industrial power supply, high-power charger and motor drive, high integration and strong drive capability have become the core requirements. CXAC85263 integrates 600V half-bridge driven current mode PWM controller to achieve dual upgrade of power density and EMI performance through breakthrough architecture, providing the ultimate solution for dual-transistor forward/flyback topology.lQu嘉泰姆

I. Disruptive technology architecturelQu嘉泰姆

Three major innovative designs in CXAC85263 hit the pain points of the industry:lQu嘉泰姆

1. High-voltage half-bridge integrationlQu嘉泰姆

a. Monolithic integrated 600V/10.0 drive capability (HO/LO pin)lQu嘉泰姆

B. VS suspension power supply technology realizes precise control of high-end MOSFETslQu嘉泰姆

c.150ns switching delay (typical) reduces switching loss by 30%lQu嘉泰姆

2. Intelligent control enginelQu嘉泰姆

| Function module | Performance parameters | Technical advantages |
| ---------------- | ------------------------- | --------------------------- |
| Frequency jitter | ± 4% dynamic range @ 92kHz | Certified by Class D EMI |
| Constant current control (CC) | 1.9-3.2 seconds pulse width detection | Forward mode accuracy ± 5% |
| Soft start (SS) | 10μA constant current charging | Suppression surge current> 60% |

3. Five protection mechanismslQu嘉泰姆

a. Cycle-By-Cycle current limiting: CS pin 0.72V (current limiting)/0.92V (overcurrent) dual thresholdlQu嘉泰姆

B. VIN overvoltage clamp: 37v Zener protection (10mA clamp current)lQu嘉泰姆

c. Output-level safety protection: the OUT pin is automatically clamped to 17V (when VIN>20V)lQu嘉泰姆

2. Precise parameter configuration systemlQu嘉泰姆

Engineers can flexibly optimize performance through external components:lQu嘉泰姆

1. Frequency programming: RI resistor sets PWM frequency (formula: Fosc(kHz)= 4300/RI(kΩ)), supporting 500kHz high frequency applicationslQu嘉泰姆

2. Soft start customization: SS capacitance value determines the start time (every 1 μF & asynmp; 350ms)lQu嘉泰姆

3. Constant current calibration: CC pin resistance set constant current point (calculation formula:(VCC-2V)/Rpc)lQu嘉泰姆

III. Performance Analysis of typical application scenarioslQu嘉泰姆

1. Industrial LED power supply (dual-tube flyback topology)lQu嘉泰姆

a.600V withstand voltage directly drives MOSFETs, eliminating external drive IClQu嘉泰姆

B. Frontier blanking (80ns) eliminates current detection spikeslQu嘉泰姆

2.3kW lithium battery charger (double tube positive): 0Ms overload delay to prevent false triggeringlQu嘉泰姆

3. Motor drive power supplylQu嘉泰姆

a.-45 ℃ ~ 125 ℃ industrial temperature zone supports harsh environmentlQu嘉泰姆

B .43% Maximum duty cycle guarantees dynamic responselQu嘉泰姆

IV. Deep optimization of electrical characteristicslQu嘉泰姆

1. Efficient driving performancelQu嘉泰姆

a.30ns rise/20ns fall time (driving 1nF load)lQu嘉泰姆

B .0.3v low voltage output (20mA irrigation current)lQu嘉泰姆

2. Energy efficiency controllQu嘉泰姆

A.18a ultra low starting currentlQu嘉泰姆

B .3.5mA work Current (VIN = 15V)lQu嘉泰姆

3. Security redundancy designlQu嘉泰姆

V. The golden rule of PCB layoutlQu嘉泰姆

Based on the core requirements of page 10 of the document:lQu嘉泰姆

1. Capacitor layoutlQu嘉泰姆

a.VIN capacitance distance VIN/AGND<5mmlQu嘉泰姆

B. VB/VS capacitance and pin spacing ≤ 3mmlQu嘉泰姆

2. Signal integritylQu嘉泰姆

a.RI/CC resistor directly connected to AGNDlQu嘉泰姆

B. HO/LO routing length <20mm (avoid crosstalk)lQu嘉泰姆

3.EMI ControllQu嘉泰姆

a. The power loop area is compressed by more than 40%lQu嘉泰姆

B. Drive loop and detection loop Layered RoutinglQu嘉泰姆

Model Selection Guide: CXAC85263 vs traditional solutionslQu嘉泰姆

Conclusion: redefine power integrationlQu嘉泰姆
CXAC85263 solves the contradiction between the volume and EMI of medium-high power power supply by integrating 600V half-bridge Drive and intelligent PWM control core on a single chip. Its 92kHz high-frequency operation capability is combined with ± 4% TikTok technology, which is especially suitable for industrial equipment requiring EMC certification. For engineers who are designing 3kW charging piles and stage lights optical power supplies, this chip can shorten the development cycle by more than 50% and reduce the system cost by 30%.lQu嘉泰姆

For detailed PDF specifications, please scan WeChat and contact us. You can also get free samples and technical support.!lQu嘉泰姆
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   Product packaging diagramlQu嘉泰姆

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   Circuit Schematic diagramlQu嘉泰姆

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  Relevant chip selection guideMore similar products.....lQu嘉泰姆

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