CXSD6275两相PWM控制芯片它为图形卡应用中的高级图形微处理器提供了一个精确的电压调节系统功率MOSFET驱动器

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发表时间：2020-04-21浏览次数：426

CXSD6275两相PWM控制芯片它为图形卡应用中的高级图形微处理器提供了一个精确的电压调节系统功率MOSFET驱动器

目录3v6嘉泰姆

1.产品概述         2.产品特点3v6嘉泰姆
3.应用范围       4.下载产品资料PDF文档 3v6嘉泰姆
5.产品封装图                     6.电路原理图             3v6嘉泰姆
7.功能概述       8.相关产品3v6嘉泰姆

一,产品概述(General Description) 3v6嘉泰姆

The CXSD6275, two-phase PWM control IC, provides a precision voltage regulation system for advanced graphic microprocessors in graphics card applications. The integration of power MOSFET drivers into the controller3v6嘉泰姆
IC and reduces the number of external parts for a cost and space saving power management solution.3v6嘉泰姆
The CXSD6275 uses a voltage-mode PWM architecture,operating with fixed-frequency, to provides excellent load transient response. The device uses the voltage across the DCRs of the inductors for current sensing. Load line3v6嘉泰姆
voltage positioning (DROOP), channel-current balance,and over-current protection are accomplished through continuous inductor DCR current sensing.3v6嘉泰姆
The MODE pin programs single- or two- phase operation.When IC operates in two-phase mode normally, it can transfer two-phase mode to single-phase mode at liberty.Nevertheless, once operates in single-phase mode, the operation mode is latched. It is required to toggle SS,REFIN/EN or 5VCC pin to reset the IC. Such feature of the MODE pin makes the CXSD6275 ideally suitable for dual3v6嘉泰姆
power input applications, such as PCIE interfaced graphic cards.This control IC‘s protection features include a set of sophisticated over-temperature, over-voltage, under-voltage, and over-current protections. Over-voltage re-sults in the converter turning the lower MOSFETs on to clamp the rising output voltage and protects the3v6嘉泰姆
microprocessor. The over-current protection level is set through external resistors. The device also provides a power-on-reset function and a programmable soft-start3v6嘉泰姆
to prevent wrong operation and limit the input surge current during power-on or start-up.3v6嘉泰姆
The CXSD6275 is available in a QFN4x4-24A package3v6嘉泰姆
二.产品特点(Features)3v6嘉泰姆

1.）Voltage-Mode Operation with Current Sharing3v6嘉泰姆
Adjustable Feedback Compensation3v6嘉泰姆
Fast Load Transient Response3v6嘉泰姆
2.）Operate with 8V~13.2VCC Supply Voltage3v6嘉泰姆
3.）Selectable External or Internal 0.6V Reference3v6嘉泰姆
±1.5% Accuracy Over Temperature3v6嘉泰姆
4.）Support Single- and Two-Phase Operations3v6嘉泰姆
5.）5VCC and Buffered Reference Outputs3v6嘉泰姆
6.）8~12V Gate Drivers with Internal Bootstrap Diode3v6嘉泰姆
7.）Lossless Inductor DCR Current Sensing3v6嘉泰姆
8.）Selectable Operation Frequency3v6嘉泰姆
150k/300k/400kHz per Phase3v6嘉泰姆
9.）Power-OK Indicator Output3v6嘉泰姆
Regulated 1.5V on REFOUT/POK3v6嘉泰姆
10.）Adjustable Over-Current Protection (OCP)3v6嘉泰姆
11.）Accurate Load Line (DROOP) Programming3v6嘉泰姆
12.）Adjustable Soft-Start3v6嘉泰姆
13.）Over-Voltage Protection (OVP)3v6嘉泰姆
14.）Under-Voltage Protection (UVP)3v6嘉泰姆
15.）Over-Temperature Protection (OTP)3v6嘉泰姆
16.）QFN4x4 24-Lead Package (QFN4x4-24A)3v6嘉泰姆
17.）Lead Free and Green Devices Available (RoHS Compliant)3v6嘉泰姆
三,应用范围 (Applications)3v6嘉泰姆

Graphics Card GPU Core Power Supply3v6嘉泰姆

Motherboard Chipset or DDR SDRAM Core PowerSupply3v6嘉泰姆
On-board High Power PWM Converter with Out-3v6嘉泰姆

put Current up to 60A3v6嘉泰姆
四.下载产品资料PDF文档 3v6嘉泰姆

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！3v6嘉泰姆

QQ截图20160419174301.jpg 3v6嘉泰姆

五,产品封装图 (Package)3v6嘉泰姆
3v6嘉泰姆
FUNCTION3v6嘉泰姆

PIN3v6嘉泰姆		FUNCTION3v6嘉泰姆
NO.3v6嘉泰姆	NAME3v6嘉泰姆	FUNCTION3v6嘉泰姆
13v6嘉泰姆	UGATE13v6嘉泰姆	High-side Gate Driver Output for channel 1. Connect this pin to the gate of high-side MOSFET.3v6嘉泰姆 This pin is monitored by the adaptive shoot-through protection circuitry to determine when3v6嘉泰姆 the high-side MOSFET has turned off.3v6嘉泰姆
23v6嘉泰姆	BOOT13v6嘉泰姆	Bootstrap Supply for the floating high-side gate driver of channel 1. Connect the Bootstrap3v6嘉泰姆 capacitor between the BOOT1 pin and the PHASE1 pin to form a bootstrap circuit. The 3v6嘉泰姆 bootstrap capacitor provides the charge to turn on the high-side MOSFET. Typical values for CBOOT ranged from 0.1μF to 1μF. Ensure that CBOOT is placed near the IC.3v6嘉泰姆
33v6嘉泰姆	5VCC3v6嘉泰姆	Internal Regulator Output. This is the output pin of the linear regulator, which is converting power from VCC and provides output current up to 20mA minimums for internal bias and external usage.3v6嘉泰姆
43v6嘉泰姆	AGND3v6嘉泰姆	Signal Ground for the IC. All voltage levels are measured with respect to this pin. Tie this pin to the ground island/plane through the lowest impedance connection available.3v6嘉泰姆
53v6嘉泰姆	MODE3v6嘉泰姆	Operation Phase Selection Input. Pulling this pin lower than 0.64V sets two-phase operation with both channels enabled. Pulling this pin higher than 0.8V sets single-phase operation with the channel 2 disabled. Once operating in single-phase mode, the operation mode is latched. It is required to toggle SS, REFIN/EN, or 5VCC pin to reset the IC.3v6嘉泰姆
63v6嘉泰姆	CSP13v6嘉泰姆	Positive Input of current sensing Amplifier for channel 1. This pin combined with CSN1 senses the inductor current through an RC network.3v6嘉泰姆
73v6嘉泰姆	CSN13v6嘉泰姆	Negative Input of current sensing amplifier for channel 1. This pin combined with CSP1 senses the inductor current through an RC network.3v6嘉泰姆
83v6嘉泰姆	CSN23v6嘉泰姆	Negative Input of current sensing amplifier for channel 2. This pin combined with CSP2 senses the inductor current through an RC network.3v6嘉泰姆
93v6嘉泰姆	CSP23v6嘉泰姆	Positive Input of current sensing Amplifier for Channel 2. This pin combined with CSN2 senses the inductor current through an RC network.3v6嘉泰姆

3v6嘉泰姆

PIN3v6嘉泰姆		FUNCTION3v6嘉泰姆
NO.3v6嘉泰姆	NAME3v6嘉泰姆
103v6嘉泰姆	DROOP3v6嘉泰姆	Load Line (droop) Setting. Connect a resistor between this pin and AGND to set the droop. A3v6嘉泰姆 sourcing current, proportional to output current is present on the DROOP pin. The droop scale3v6嘉泰姆 factor is set by the resistors (connected with CSP1, CSP2, and DROOP), resistance of the output3v6嘉泰姆 inductors, and the internal voltage divider with the ratio of 5%.3v6嘉泰姆
113v6嘉泰姆	RT3v6嘉泰姆	Operating Frequency Setting. The three-level input pin sets the operating frequency for each3v6嘉泰姆 channel.3v6嘉泰姆
		RT3v6嘉泰姆	Operating Frequency (kHz)3v6嘉泰姆
		GND3v6嘉泰姆	1503v6嘉泰姆
		Floating3v6嘉泰姆	3003v6嘉泰姆
		5VCC3v6嘉泰姆	4003v6嘉泰姆
123v6嘉泰姆	COMP3v6嘉泰姆	Error Amplifier Output. Connect the compensation network between COMP, FB, and VOUT for Type3v6嘉泰姆 2 or Type 3 feedback compensation.3v6嘉泰姆
133v6嘉泰姆	FB3v6嘉泰姆	Feedback Voltage. This pin is the inverting input to the error comparator. A resistor divider from3v6嘉泰姆 the output to the AGND is used to set the regulation voltage.3v6嘉泰姆
143v6嘉泰姆	SS3v6嘉泰姆	Soft-start Current Output. Connect a capacitor from this pin to the AGND to set the soft-start3v6嘉泰姆 interval. Pulling the voltage on this pin below 0.5V causes COMP to pull low and then shuts off the3v6嘉泰姆 output.3v6嘉泰姆
153v6嘉泰姆	REFIN/EN3v6嘉泰姆	External Reference and Enable Input. The IC uses the voltage (VREFIN/EN) as reference voltage of3v6嘉泰姆 the converter with soft-start control. If this pin is driven by an external voltage ranged from 0.4V to3v6嘉泰姆 2V. The IC is disabled if the voltage is below 0.4V (typical). If external reference is not available,3v6嘉泰姆 then connect this pin to 5VCC for internal 0.6V reference.3v6嘉泰姆
163v6嘉泰姆	REFOUT/PO3v6嘉泰姆 K3v6嘉泰姆	Power-OK and 1.5V Reference Output. This pin is a reference output used to indicate the status3v6嘉泰姆 of the voltages on SS pin and FB pin. REFOUT/POK provides 1.5V reference if VFB> 87.5% of3v6嘉泰姆 reference (VR).3v6嘉泰姆
173v6嘉泰姆	BOOT23v6嘉泰姆	Bootstrap Supply for the floating high-side gate driver of channel 2. Connect the Bootstrap3v6嘉泰姆 capacitor between the BOOT2 pin and the PHASE2 pin to form a bootstrap circuit. The bootstrap3v6嘉泰姆 capacitor provides the charge to turn on the high-side MOSFET. Typical values for CBOOT range3v6嘉泰姆 from 0.1μF to 1μF. Ensure that CBOOT is placed near the IC.3v6嘉泰姆
183v6嘉泰姆	UGATE23v6嘉泰姆	High-side Gate Driver Output for Channel 2. Connect this pin to the gate of high-side MOSFET.3v6嘉泰姆 This pin is monitored by the adaptive shoot-through protection circuitry to determine when the3v6嘉泰姆 high-side MOSFET has turned off.3v6嘉泰姆
193v6嘉泰姆	PHASE23v6嘉泰姆	Switch Node for Channel 2. Connect this pin to the source of high-side MOSFET and the drain of3v6嘉泰姆 the low-side MOSFET. This pin is used as sink for UGATE2 driver. This pin is also monitored by3v6嘉泰姆 the adaptive shoot-through protection circuitry to determine when the high-side MOSFET has3v6嘉泰姆 turned off. An Schottky diode between this pin and the ground is recommended to reduce3v6嘉泰姆 negative transient voltage that is common in a power supply system.3v6嘉泰姆
203v6嘉泰姆	LGATE23v6嘉泰姆	Low-side Gate Driver Output for Channel 2. Connect this pin to the gate of low-side MOSFET.3v6嘉泰姆 This pin is monitored by the adaptive shoot-through protection circuitry to determine when the3v6嘉泰姆 low-side MOSFET has turned off.3v6嘉泰姆
213v6嘉泰姆	VCCDRV3v6嘉泰姆	Drive for External Linear Regulator. This pin is the drive output for the external linear regulator.3v6嘉泰姆 Connect this pin to base/gate of NPN/NMOS transistor as the pass element.3v6嘉泰姆
223v6嘉泰姆	VCC3v6嘉泰姆	Supply Voltage. This pin along with VCCDRV pin and external pass element provides 8.5V3v6嘉泰姆 regulated bias supply, low-side gate drivers, and the bootstrap circuit for high-side drivers. This pin3v6嘉泰姆 can receive a well-decoupled 8V~13.2V supply voltage alone if the VCCDRV is left open. Ensure3v6嘉泰姆 that this pin is bypassed by a ceramic capacitor next to the pin.3v6嘉泰姆
233v6嘉泰姆	LGATE13v6嘉泰姆	Low-side Gate Driver Output for Channel 1. Connect this pin to the gate of low-side MOSFET.3v6嘉泰姆 This pin is monitored by the adaptive shoot-through protection circuitry to determine when the3v6嘉泰姆 low-side MOSFET has turned off.3v6嘉泰姆

PIN3v6嘉泰姆		FUNCTION3v6嘉泰姆
NO.3v6嘉泰姆	NAME3v6嘉泰姆	FUNCTION3v6嘉泰姆
243v6嘉泰姆	PHASE13v6嘉泰姆	Switch Node for Channel 1. Connect this pin to the source of high-side MOSFET and the drain of the low-side MOSFET. This pin is used as sink for UGATT1 driver. This pin is also monitored by the adaptive shoot-through protection circuitry to determine when the high-side MOSFET has turned off. An Schottky diode between this pin and the ground is recommended to reduce negative transient voltage, which is common in a power supply system.3v6嘉泰姆
253v6嘉泰姆	PGND3v6嘉泰姆	Power Ground for the low-side gate drivers. Connect this pin to the source of low-side MOSFETs. This pin is used as sink for LGATE1 and LGATE2 drivers.3v6嘉泰姆

六.电路原理图3v6嘉泰姆

3v6嘉泰姆

八,相关产品 更多同类产品...... 3v6嘉泰姆

Switching Regulator > Buck Controller3v6嘉泰姆
Part_No 3v6嘉泰姆	Package 3v6嘉泰姆	Archi3v6嘉泰姆 tectu3v6嘉泰姆	Phase3v6嘉泰姆	No.of3v6嘉泰姆 PWM3v6嘉泰姆 Output3v6嘉泰姆	Output 3v6嘉泰姆 Current3v6嘉泰姆 (A) 3v6嘉泰姆	Input3v6嘉泰姆 Voltage (V) 3v6嘉泰姆		Reference3v6嘉泰姆 Voltage3v6嘉泰姆 (V) 3v6嘉泰姆	Bias 3v6嘉泰姆 Voltage3v6嘉泰姆 (V) 3v6嘉泰姆	Quiescent3v6嘉泰姆 Current3v6嘉泰姆 (uA) 3v6嘉泰姆
Part_No 3v6嘉泰姆	Package 3v6嘉泰姆	Archi3v6嘉泰姆 tectu3v6嘉泰姆	Phase3v6嘉泰姆	No.of3v6嘉泰姆 PWM3v6嘉泰姆 Output3v6嘉泰姆	Output 3v6嘉泰姆 Current3v6嘉泰姆 (A) 3v6嘉泰姆	min3v6嘉泰姆	max3v6嘉泰姆	Reference3v6嘉泰姆 Voltage3v6嘉泰姆 (V) 3v6嘉泰姆	Bias 3v6嘉泰姆 Voltage3v6嘉泰姆 (V) 3v6嘉泰姆	Quiescent3v6嘉泰姆 Current3v6嘉泰姆 (uA) 3v6嘉泰姆
CXSD62733v6嘉泰姆	SOP-143v6嘉泰姆 QSOP-163v6嘉泰姆 QFN4x4-163v6嘉泰姆	VM 3v6嘉泰姆	1 3v6嘉泰姆	1 3v6嘉泰姆	303v6嘉泰姆	2.9 3v6嘉泰姆	13.23v6嘉泰姆	0.93v6嘉泰姆	12 3v6嘉泰姆	80003v6嘉泰姆
CXSD62743v6嘉泰姆	SOP-83v6嘉泰姆	VM 3v6嘉泰姆	13v6嘉泰姆	13v6嘉泰姆	203v6嘉泰姆	2.9 3v6嘉泰姆	13.2 3v6嘉泰姆	0.83v6嘉泰姆	123v6嘉泰姆	50003v6嘉泰姆
CXSD6274C3v6嘉泰姆	SOP-83v6嘉泰姆	VM3v6嘉泰姆	13v6嘉泰姆	13v6嘉泰姆	203v6嘉泰姆	2.93v6嘉泰姆	13.23v6嘉泰姆	0.83v6嘉泰姆	123v6嘉泰姆	50003v6嘉泰姆
CXSD62753v6嘉泰姆	QFN4x4-243v6嘉泰姆	VM3v6嘉泰姆	23v6嘉泰姆	13v6嘉泰姆	603v6嘉泰姆	3.13v6嘉泰姆	13.23v6嘉泰姆	0.63v6嘉泰姆	123v6嘉泰姆	50003v6嘉泰姆
CXSD62763v6嘉泰姆	SOP-83v6嘉泰姆	VM3v6嘉泰姆	13v6嘉泰姆	13v6嘉泰姆	203v6嘉泰姆	2.23v6嘉泰姆	13.23v6嘉泰姆	0.83v6嘉泰姆	5~123v6嘉泰姆	21003v6嘉泰姆
CXSD6276A3v6嘉泰姆	SOP-83v6嘉泰姆	VM3v6嘉泰姆	13v6嘉泰姆	13v6嘉泰姆	203v6嘉泰姆	2.23v6嘉泰姆	13.23v6嘉泰姆	0.83v6嘉泰姆	5~123v6嘉泰姆	21003v6嘉泰姆
CXSD6277/A/B3v6嘉泰姆	SOP8\|TSSOP83v6嘉泰姆	VM3v6嘉泰姆	13v6嘉泰姆	13v6嘉泰姆	53v6嘉泰姆	53v6嘉泰姆	13.23v6嘉泰姆	1.25\|0.83v6嘉泰姆	5~123v6嘉泰姆	30003v6嘉泰姆
CXSD62783v6嘉泰姆	SOP-83v6嘉泰姆	VM3v6嘉泰姆	13v6嘉泰姆	13v6嘉泰姆	103v6嘉泰姆

上一篇：CXSD6274C 固定的300kHz开关频率电压模式和同步PWM控制器来驱动双N通道mosfet

下一篇：CXSD6276是固定的300kHz频率电压模式和同步PWM控制器两个低成本N通道mosfet设计为单电源5~12V或双电源工作电压为负载瞬变提供良好的调节

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