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：287

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RiP嘉泰姆

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

一,产品概述(General Description) RiP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 controllerRiP嘉泰姆
IC and reduces the number of external parts for a cost and space saving power management solution.RiP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 lineRiP嘉泰姆
voltage positioning (DROOP), channel-current balance,and over-current protection are accomplished through continuous inductor DCR current sensing.RiP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 dualRiP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 theRiP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-startRiP嘉泰姆
to prevent wrong operation and limit the input surge current during power-on or start-up.RiP嘉泰姆
The CXSD6275 is available in a QFN4x4-24A packageRiP嘉泰姆
二.产品特点(Features)RiP嘉泰姆

1.）Voltage-Mode Operation with Current SharingRiP嘉泰姆
Adjustable Feedback CompensationRiP嘉泰姆
Fast Load Transient ResponseRiP嘉泰姆
2.）Operate with 8V~13.2VCC Supply VoltageRiP嘉泰姆
3.）Selectable External or Internal 0.6V ReferenceRiP嘉泰姆
±1.5% Accuracy Over TemperatureRiP嘉泰姆
4.）Support Single- and Two-Phase OperationsRiP嘉泰姆
5.）5VCC and Buffered Reference OutputsRiP嘉泰姆
6.）8~12V Gate Drivers with Internal Bootstrap DiodeRiP嘉泰姆
7.）Lossless Inductor DCR Current SensingRiP嘉泰姆
8.）Selectable Operation FrequencyRiP嘉泰姆
150k/300k/400kHz per PhaseRiP嘉泰姆
9.）Power-OK Indicator OutputRiP嘉泰姆
Regulated 1.5V on REFOUT/POKRiP嘉泰姆
10.）Adjustable Over-Current Protection (OCP)RiP嘉泰姆
11.）Accurate Load Line (DROOP) ProgrammingRiP嘉泰姆
12.）Adjustable Soft-StartRiP嘉泰姆
13.）Over-Voltage Protection (OVP)RiP嘉泰姆
14.）Under-Voltage Protection (UVP)RiP嘉泰姆
15.）Over-Temperature Protection (OTP)RiP嘉泰姆
16.）QFN4x4 24-Lead Package (QFN4x4-24A)RiP嘉泰姆
17.）Lead Free and Green Devices Available (RoHS Compliant)RiP嘉泰姆
三,应用范围 (Applications)RiP嘉泰姆

Graphics Card GPU Core Power SupplyRiP嘉泰姆

Motherboard Chipset or DDR SDRAM Core PowerSupplyRiP嘉泰姆
On-board High Power PWM Converter with Out-RiP嘉泰姆

put Current up to 60ARiP嘉泰姆
四.下载产品资料PDF文档 RiP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！RiP嘉泰姆

QQ截图20160419174301.jpg RiP嘉泰姆

五,产品封装图 (Package)RiP嘉泰姆
RiP嘉泰姆
FUNCTIONRiP嘉泰姆

PINRiP嘉泰姆		FUNCTIONRiP嘉泰姆
NO.RiP嘉泰姆	NAMERiP嘉泰姆	FUNCTIONRiP嘉泰姆
1RiP嘉泰姆	UGATE1RiP嘉泰姆	High-side Gate Driver Output for channel 1. Connect this pin to the gate of high-side MOSFET.RiP嘉泰姆 This pin is monitored by the adaptive shoot-through protection circuitry to determine whenRiP嘉泰姆 the high-side MOSFET has turned off.RiP嘉泰姆
2RiP嘉泰姆	BOOT1RiP嘉泰姆	Bootstrap Supply for the floating high-side gate driver of channel 1. Connect the BootstrapRiP嘉泰姆 capacitor between the BOOT1 pin and the PHASE1 pin to form a bootstrap circuit. The RiP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.RiP嘉泰姆
3RiP嘉泰姆	5VCCRiP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.RiP嘉泰姆
4RiP嘉泰姆	AGNDRiP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.RiP嘉泰姆
5RiP嘉泰姆	MODERiP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.RiP嘉泰姆
6RiP嘉泰姆	CSP1RiP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.RiP嘉泰姆
7RiP嘉泰姆	CSN1RiP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.RiP嘉泰姆
8RiP嘉泰姆	CSN2RiP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.RiP嘉泰姆
9RiP嘉泰姆	CSP2RiP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.RiP嘉泰姆

RiP嘉泰姆

PINRiP嘉泰姆		FUNCTIONRiP嘉泰姆
NO.RiP嘉泰姆	NAMERiP嘉泰姆
10RiP嘉泰姆	DROOPRiP嘉泰姆	Load Line (droop) Setting. Connect a resistor between this pin and AGND to set the droop. ARiP嘉泰姆 sourcing current, proportional to output current is present on the DROOP pin. The droop scaleRiP嘉泰姆 factor is set by the resistors (connected with CSP1, CSP2, and DROOP), resistance of the outputRiP嘉泰姆 inductors, and the internal voltage divider with the ratio of 5%.RiP嘉泰姆
11RiP嘉泰姆	RTRiP嘉泰姆	Operating Frequency Setting. The three-level input pin sets the operating frequency for eachRiP嘉泰姆 channel.RiP嘉泰姆
		RTRiP嘉泰姆	Operating Frequency (kHz)RiP嘉泰姆
		GNDRiP嘉泰姆	150RiP嘉泰姆
		FloatingRiP嘉泰姆	300RiP嘉泰姆
		5VCCRiP嘉泰姆	400RiP嘉泰姆
12RiP嘉泰姆	COMPRiP嘉泰姆	Error Amplifier Output. Connect the compensation network between COMP, FB, and VOUT for TypeRiP嘉泰姆 2 or Type 3 feedback compensation.RiP嘉泰姆
13RiP嘉泰姆	FBRiP嘉泰姆	Feedback Voltage. This pin is the inverting input to the error comparator. A resistor divider fromRiP嘉泰姆 the output to the AGND is used to set the regulation voltage.RiP嘉泰姆
14RiP嘉泰姆	SSRiP嘉泰姆	Soft-start Current Output. Connect a capacitor from this pin to the AGND to set the soft-startRiP嘉泰姆 interval. Pulling the voltage on this pin below 0.5V causes COMP to pull low and then shuts off theRiP嘉泰姆 output.RiP嘉泰姆
15RiP嘉泰姆	REFIN/ENRiP嘉泰姆	External Reference and Enable Input. The IC uses the voltage (VREFIN/EN) as reference voltage ofRiP嘉泰姆 the converter with soft-start control. If this pin is driven by an external voltage ranged from 0.4V toRiP嘉泰姆 2V. The IC is disabled if the voltage is below 0.4V (typical). If external reference is not available,RiP嘉泰姆 then connect this pin to 5VCC for internal 0.6V reference.RiP嘉泰姆
16RiP嘉泰姆	REFOUT/PORiP嘉泰姆 KRiP嘉泰姆	Power-OK and 1.5V Reference Output. This pin is a reference output used to indicate the statusRiP嘉泰姆 of the voltages on SS pin and FB pin. REFOUT/POK provides 1.5V reference if VFB> 87.5% ofRiP嘉泰姆 reference (VR).RiP嘉泰姆
17RiP嘉泰姆	BOOT2RiP嘉泰姆	Bootstrap Supply for the floating high-side gate driver of channel 2. Connect the BootstrapRiP嘉泰姆 capacitor between the BOOT2 pin and the PHASE2 pin to form a bootstrap circuit. The bootstrapRiP嘉泰姆 capacitor provides the charge to turn on the high-side MOSFET. Typical values for CBOOT rangeRiP嘉泰姆 from 0.1μF to 1μF. Ensure that CBOOT is placed near the IC.RiP嘉泰姆
18RiP嘉泰姆	UGATE2RiP嘉泰姆	High-side Gate Driver Output for Channel 2. Connect this pin to the gate of high-side MOSFET.RiP嘉泰姆 This pin is monitored by the adaptive shoot-through protection circuitry to determine when theRiP嘉泰姆 high-side MOSFET has turned off.RiP嘉泰姆
19RiP嘉泰姆	PHASE2RiP嘉泰姆	Switch Node for Channel 2. Connect this pin to the source of high-side MOSFET and the drain ofRiP嘉泰姆 the low-side MOSFET. This pin is used as sink for UGATE2 driver. This pin is also monitored byRiP嘉泰姆 the adaptive shoot-through protection circuitry to determine when the high-side MOSFET hasRiP嘉泰姆 turned off. An Schottky diode between this pin and the ground is recommended to reduceRiP嘉泰姆 negative transient voltage that is common in a power supply system.RiP嘉泰姆
20RiP嘉泰姆	LGATE2RiP嘉泰姆	Low-side Gate Driver Output for Channel 2. Connect this pin to the gate of low-side MOSFET.RiP嘉泰姆 This pin is monitored by the adaptive shoot-through protection circuitry to determine when theRiP嘉泰姆 low-side MOSFET has turned off.RiP嘉泰姆
21RiP嘉泰姆	VCCDRVRiP嘉泰姆	Drive for External Linear Regulator. This pin is the drive output for the external linear regulator.RiP嘉泰姆 Connect this pin to base/gate of NPN/NMOS transistor as the pass element.RiP嘉泰姆
22RiP嘉泰姆	VCCRiP嘉泰姆	Supply Voltage. This pin along with VCCDRV pin and external pass element provides 8.5VRiP嘉泰姆 regulated bias supply, low-side gate drivers, and the bootstrap circuit for high-side drivers. This pinRiP嘉泰姆 can receive a well-decoupled 8V~13.2V supply voltage alone if the VCCDRV is left open. EnsureRiP嘉泰姆 that this pin is bypassed by a ceramic capacitor next to the pin.RiP嘉泰姆
23RiP嘉泰姆	LGATE1RiP嘉泰姆	Low-side Gate Driver Output for Channel 1. Connect this pin to the gate of low-side MOSFET.RiP嘉泰姆 This pin is monitored by the adaptive shoot-through protection circuitry to determine when theRiP嘉泰姆 low-side MOSFET has turned off.RiP嘉泰姆

PINRiP嘉泰姆		FUNCTIONRiP嘉泰姆
NO.RiP嘉泰姆	NAMERiP嘉泰姆	FUNCTIONRiP嘉泰姆
24RiP嘉泰姆	PHASE1RiP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.RiP嘉泰姆
25RiP嘉泰姆	PGNDRiP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.RiP嘉泰姆

六.电路原理图RiP嘉泰姆

RiP嘉泰姆

八,相关产品 更多同类产品...... RiP嘉泰姆

Switching Regulator > Buck ControllerRiP嘉泰姆
Part_No RiP嘉泰姆	Package RiP嘉泰姆	ArchiRiP嘉泰姆 tectuRiP嘉泰姆	PhaseRiP嘉泰姆	No.ofRiP嘉泰姆 PWMRiP嘉泰姆 OutputRiP嘉泰姆	Output RiP嘉泰姆 CurrentRiP嘉泰姆 (A) RiP嘉泰姆	InputRiP嘉泰姆 Voltage (V) RiP嘉泰姆		ReferenceRiP嘉泰姆 VoltageRiP嘉泰姆 (V) RiP嘉泰姆	Bias RiP嘉泰姆 VoltageRiP嘉泰姆 (V) RiP嘉泰姆	QuiescentRiP嘉泰姆 CurrentRiP嘉泰姆 (uA) RiP嘉泰姆
Part_No RiP嘉泰姆	Package RiP嘉泰姆	ArchiRiP嘉泰姆 tectuRiP嘉泰姆	PhaseRiP嘉泰姆	No.ofRiP嘉泰姆 PWMRiP嘉泰姆 OutputRiP嘉泰姆	Output RiP嘉泰姆 CurrentRiP嘉泰姆 (A) RiP嘉泰姆	minRiP嘉泰姆	maxRiP嘉泰姆	ReferenceRiP嘉泰姆 VoltageRiP嘉泰姆 (V) RiP嘉泰姆	Bias RiP嘉泰姆 VoltageRiP嘉泰姆 (V) RiP嘉泰姆	QuiescentRiP嘉泰姆 CurrentRiP嘉泰姆 (uA) RiP嘉泰姆
CXSD6273RiP嘉泰姆	SOP-14RiP嘉泰姆 QSOP-16RiP嘉泰姆 QFN4x4-16RiP嘉泰姆	VM RiP嘉泰姆	1 RiP嘉泰姆	1 RiP嘉泰姆	30RiP嘉泰姆	2.9 RiP嘉泰姆	13.2RiP嘉泰姆	0.9RiP嘉泰姆	12 RiP嘉泰姆	8000RiP嘉泰姆
CXSD6274RiP嘉泰姆	SOP-8RiP嘉泰姆	VM RiP嘉泰姆	1RiP嘉泰姆	1RiP嘉泰姆	20RiP嘉泰姆	2.9 RiP嘉泰姆	13.2 RiP嘉泰姆	0.8RiP嘉泰姆	12RiP嘉泰姆	5000RiP嘉泰姆
CXSD6274CRiP嘉泰姆	SOP-8RiP嘉泰姆	VMRiP嘉泰姆	1RiP嘉泰姆	1RiP嘉泰姆	20RiP嘉泰姆	2.9RiP嘉泰姆	13.2RiP嘉泰姆	0.8RiP嘉泰姆	12RiP嘉泰姆	5000RiP嘉泰姆
CXSD6275RiP嘉泰姆	QFN4x4-24RiP嘉泰姆	VMRiP嘉泰姆	2RiP嘉泰姆	1RiP嘉泰姆	60RiP嘉泰姆	3.1RiP嘉泰姆	13.2RiP嘉泰姆	0.6RiP嘉泰姆	12RiP嘉泰姆	5000RiP嘉泰姆
CXSD6276RiP嘉泰姆	SOP-8RiP嘉泰姆	VMRiP嘉泰姆	1RiP嘉泰姆	1RiP嘉泰姆	20RiP嘉泰姆	2.2RiP嘉泰姆	13.2RiP嘉泰姆	0.8RiP嘉泰姆	5~12RiP嘉泰姆	2100RiP嘉泰姆
CXSD6276ARiP嘉泰姆	SOP-8RiP嘉泰姆	VMRiP嘉泰姆	1RiP嘉泰姆	1RiP嘉泰姆	20RiP嘉泰姆	2.2RiP嘉泰姆	13.2RiP嘉泰姆	0.8RiP嘉泰姆	5~12RiP嘉泰姆	2100RiP嘉泰姆
CXSD6277/A/BRiP嘉泰姆	SOP8\|TSSOP8RiP嘉泰姆	VMRiP嘉泰姆	1RiP嘉泰姆	1RiP嘉泰姆	5RiP嘉泰姆	5RiP嘉泰姆	13.2RiP嘉泰姆	1.25\|0.8RiP嘉泰姆	5~12RiP嘉泰姆	3000RiP嘉泰姆
CXSD6278RiP嘉泰姆	SOP-8RiP嘉泰姆	VMRiP嘉泰姆	1RiP嘉泰姆	1RiP嘉泰姆	10RiP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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