双相动态电压COT-Buck-PWM控制器CXSD62119双相PWM控制芯片为先进的图形卡和主板应用提供了一种精确的电压调节系统

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

The CXSD62119 is a dual-phase PWM control IC which provides a precision voltage regulation system for advanced graphic card and motherboard applications. The integration of dual-phase power MOSFET drivers into the controller IC and reduces the number of external parts for a cost and space saving power management solution. The CXSD62119 uses a constant on time architecture control, and results in excellent transient response and accurate DC voltage output in either PFM or PWM Mode. In Pulse Frequency Mode (PFM), the CXSD62119 provides very high efficiency over light to heavy loads with loading modulated switching frequencies. In PWM Mode, the converter works nearly at constant frequency for low-noise requirements. The device uses the voltage across the low side RDS(ON) for current sensing achieves high efficiency. The device integrates adjustable load line voltage positioning (droop) and adopts low side RDS(ON) for channel-current balance. The CXSD62119 also implement a VID control operation in which the feedback voltage is regulated and tracks external input reference voltage. This controller protection features include over-temperature (OTP), over-voltage (OVP), under-voltage (UVP) and overcurrent protections (OCP). The device also provides a power-on-reset function and a external programmable soft-start to prevent wrong operation and limit the input surge current during power-on or start-up. The CXSD62119 is available in TQFN 3x3-20 packages.

   产品特点 返回TOP

· High Input Battery Voltages Range from 1.8V to 25V Input Power 

· Multiform Purpose Input Voltage Collocation: VCC = 5V / VIN = 5.5V ~ 19V for NB MXM application 

· Built in VREF voltage = 2.0V +1% with all temperature range 

· External reference input with PWM VID Dynamic voltage control 

· Integrated Bootstrap Forward P-CH MOSFET 

· Built in Adjustable Frequency by TON : 100KHz ~ 800KHz range 

· Built in Constant On Time PWM Control with Current Sharing Operation 

· Built in External Soft-Start & Soft-Stop functions for output voltage 

· Support Single and Two phases PWM Control by LGATE2 & PSI voltage setting 

· Built in Programmable OCP function by Sensing Low Side MOSFET 

· Built in UVP (50%), OVP(145%) & Thermal Shutdown functions on PWM Channel 

· Built in PGOOD indicator for output voltage 

· Built in POR Control Scheme Implemented at 4. 25V ~ 4.45V range 

· ShutdownControlbyENusinganExternalMOSFET 

· TQFN 3x3-20 Package

   应用范围 返回TOP

· VGA

   技术规格书（产品PDF) 返回TOP 

     需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！

产品封装图 返回TOP

电路原理图 返回TOP 

相关芯片选择指南 返回TOP                             更多同类产品......