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KP322X series
KP322X Fixed 12V output, high-performance, low-cost offline PWM controlled power switch The KP322X series is a high-performance, low-cost PWM controlled power switch suitable for offline low-power buck applications. It features a simple peripheral circuit and a small number of components. The built-in high-voltage MOSFET also improves the system's surge tolerance. Unlike traditional PWM controllers, the KP322X does not have a fixed clock to drive the MOSFET. The system switching frequency adjusts automatically with the load. The chip also uses multi-mode PWM control technology, which effectively simplifies the peripheral circuit design, improves the line regulation and load regulation, and eliminates audible noise during system operation. In addition, the internal peak current detection threshold automatically adjusts according to the actual load, effectively reducing standby power consumption under no-load conditions. The KP322X integrates comprehensive protection functions with self-recovery capabilities: VDD undervoltage protection, cycle-by-cycle current limiting, overtemperature protection, overload protection, and VDD overvoltage protection.
Category：
- Product Description
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- Commodity name: KP322X series
- 封装: SOP-8/DIP-7
- 品牌: Biyi Microelectronics
KP322X Fixed 12V output, high-performance, low-cost offline PWM controlled power switch The KP322X series is a high-performance, low-cost PWM controlled power switch suitable for offline low-power buck applications. It features a simple peripheral circuit and a small number of components. The built-in high-voltage MOSFET also improves the system's surge tolerance. Unlike traditional PWM controllers, the KP322X does not have a fixed clock to drive the MOSFET. The system switching frequency adjusts automatically with the load. The chip also uses multi-mode PWM control technology, which effectively simplifies the peripheral circuit design, improves the line regulation and load regulation, and eliminates audible noise during system operation. In addition, the internal peak current detection threshold automatically adjusts according to the actual load, effectively reducing standby power consumption under no-load conditions. The KP322X integrates comprehensive protection functions with self-recovery capabilities: VDD undervoltage protection, cycle-by-cycle current limiting, overtemperature protection, overload protection, and VDD overvoltage protection.
Main Features
• Fixed 12V output
• Integrated 650V high-voltage MOSFET and high-voltage startup circuit
• Multi-mode control, noiseless operation
• Supports buck and buck-boost topologies
• Good line regulation and load regulation
• Integrated soft-start circuit
• Built-in protection functions:
• Overload protection (OLP)
• Cycle-by-cycle current limit (OCP)
• Output overvoltage protection (OVP)
• VDD overvoltage, undervoltage, and voltage clamping protection
• Package type SOP-8/DIP-7
Product Model Topology Circuit Maximum Output Operating Mode Output Withstand Voltage (V) On-resistance (Ω) Startup Standby Power Consumption VDDmax Maximum Frequency Package Current (mA) Characteristics Method (mW) (V) (kHz) KP3221 Buck/Buck-Boost 250 DCM&CCM CV 650V MOS 10 High Voltage Startup <50 30 60 SOP-8 KP3221 Buck/Buck-Boost 250 DCM&CCM CV 650V MOS 10 High Voltage Startup <50 30 60 DIP-7 KP3222 Buck/Buck-Boost 400 DCM&CCM CV 650V MOS 4 High Voltage Startup <50 30 60 DIP-7 KP3224 Buck/Buck-Boost 500 DCM&CCM CV 650V MOS 2 High Voltage Startup <100 30 60 DIP-7
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