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

发布时间:2020-04-06 09:43:38 浏览次数:703 作者:嘉泰姆 来源:1
摘要: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

目录0lO嘉泰姆

1.产品概述                       2.产品特点
3.应用范围                       4.下载产品资料PDF文档 
5.产品封装图</span>                     6.电路原理图</span>                   
7.
功能概述
                        8.相关产品0lO嘉泰姆

,产品概述(General Description)    0lO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 controller
IC and reduces the number of external parts for a cost and space saving power management solution.
       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 line
voltage positioning (DROOP), channel-current balance,and over-current protection are accomplished through continuous inductor DCR current sensing.
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 dual
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 the
microprocessor. The over-current protection level is set through external resistors. The device also provides a power-on-reset function and a programmable soft-start
to prevent wrong operation and limit the input surge current during power-on or start-up.
       The CXSD6275 is available in a QFN4x4-24A package

二.产品特点(Features)0lO嘉泰姆


1.)Voltage-Mode Operation with Current Sharing
       Adjustable Feedback Compensation
       Fast Load Transient Response
2.)</strong>Operate with 8V~13.2VCC Supply Voltage
3.)</strong>Selectable External or Internal 0.6V Reference
     ±1.5% Accuracy Over Temperature
4.)</strong>Support Single- and Two-Phase Operations
5.)</strong>5VCC and Buffered Reference Outputs
6.)</strong>8~12V Gate Drivers with Internal Bootstrap Diode
7.)</strong>Lossless Inductor DCR Current Sensing
8.)</strong>Selectable Operation Frequency
      150k/300k/400kHz per Phase
9.)</strong>Power-OK Indicator Output
      Regulated 1.5V on REFOUT/POK
10.)</strong>Adjustable Over-Current Protection (OCP)
11.)</strong>Accurate Load Line (DROOP) Programming
12.)</strong>Adjustable Soft-Start
13.)</strong>Over-Voltage Protection (OVP)
14.)</strong>Under-Voltage Protection (UVP)
15.)</strong>Over-Temperature Protection (OTP)
16.)</strong>QFN4x4 24-Lead Package (QFN4x4-24A)
17.)</strong>Lead Free and Green Devices Available 
(RoHS Compliant)
三</span>,应用范围 (Applications)0lO嘉泰姆


Graphics Card GPU Core Power Supply0lO嘉泰姆

Motherboard Chipset or DDR SDRAM Core PowerSupply
On-board High Power PWM Converter with Out-
0lO嘉泰姆

put Current up to 60A
四.下载产品资料PDF文档 0lO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</span>!</span>0lO嘉泰姆

 QQ截图20160419174301.jpg0lO嘉泰姆

五,产品封装图 (Package)

FUNCTION
0lO嘉泰姆

PIN0lO嘉泰姆

FUNCTION0lO嘉泰姆

NO.0lO嘉泰姆

NAME0lO嘉泰姆

10lO嘉泰姆

UGATE10lO嘉泰姆

High-side Gate Driver Output for channel 1. Connect this pin to the gate of high-side MOSFET.
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This pin is monitored by the adaptive shoot-through protection circuitry to determine when0lO嘉泰姆

 the high-side MOSFET has turned off.0lO嘉泰姆

20lO嘉泰姆

BOOT10lO嘉泰姆

Bootstrap Supply for the floating high-side gate driver of channel 1. Connect the Bootstrap
0lO嘉泰姆

capacitor between the BOOT1 pin and the PHASE1 pin to form a bootstrap circuit. The 0lO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.0lO嘉泰姆

30lO嘉泰姆

5VCC0lO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.0lO嘉泰姆

40lO嘉泰姆

AGND0lO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.0lO嘉泰姆

50lO嘉泰姆

MODE0lO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.0lO嘉泰姆

60lO嘉泰姆

CSP10lO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.0lO嘉泰姆

70lO嘉泰姆

CSN10lO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.0lO嘉泰姆

80lO嘉泰姆

CSN20lO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.0lO嘉泰姆

90lO嘉泰姆

CSP20lO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.0lO嘉泰姆


0lO嘉泰姆

PIN0lO嘉泰姆

FUNCTION0lO嘉泰姆

NO.0lO嘉泰姆

NAME0lO嘉泰姆

100lO嘉泰姆

DROOP0lO嘉泰姆

Load Line (droop) Setting. Connect a resistor between this pin and AGND to set the droop. A
sourcing current, proportional to output current is present on the DROOP pin. The droop scale
factor is set by the resistors (connected with CSP1, CSP2, and DROOP), resistance of the output
inductors, and the internal voltage divider with the ratio of 5%.0lO嘉泰姆

110lO嘉泰姆

RT0lO嘉泰姆

Operating Frequency Setting. The three-level input pin sets the operating frequency for each
channel.0lO嘉泰姆

RT0lO嘉泰姆

Operating Frequency (kHz)0lO嘉泰姆

GND0lO嘉泰姆

1500lO嘉泰姆

Floating0lO嘉泰姆

3000lO嘉泰姆

5VCC0lO嘉泰姆

4000lO嘉泰姆

120lO嘉泰姆

COMP0lO嘉泰姆

Error Amplifier Output. Connect the compensation network between COMP, FB, and VOUT for Type
2 or Type 3 feedback compensation.0lO嘉泰姆

130lO嘉泰姆

FB0lO嘉泰姆

Feedback Voltage. This pin is the inverting input to the error comparator. A resistor divider from
the output to the AGND is used to set the regulation voltage.0lO嘉泰姆

140lO嘉泰姆

SS0lO嘉泰姆

Soft-start Current Output. Connect a capacitor from this pin to the AGND to set the soft-start
interval. Pulling the voltage on this pin below 0.5V causes COMP to pull low and then shuts off the
output.0lO嘉泰姆

150lO嘉泰姆

REFIN/EN0lO嘉泰姆

External Reference and Enable Input. The IC uses the voltage (VREFIN/EN) as reference voltage of
the converter with soft-start control. If this pin is driven by an external voltage ranged from 0.4V to
2V. The IC is disabled if the voltage is below 0.4V (typical). If external reference is not available,
then connect this pin to 5VCC for internal 0.6V reference.0lO嘉泰姆

160lO嘉泰姆

REFOUT/PO
K0lO嘉泰姆

Power-OK and 1.5V Reference Output. This pin is a reference output used to indicate the status
of the voltages on SS pin and FB pin. REFOUT/POK provides 1.5V reference if VFB> 87.5% of
reference (VR).0lO嘉泰姆

170lO嘉泰姆

BOOT20lO嘉泰姆

Bootstrap Supply for the floating high-side gate driver of channel 2. Connect the Bootstrap
capacitor between the BOOT2 pin and the PHASE2 pin to form a bootstrap circuit. The bootstrap
capacitor provides the charge to turn on the high-side MOSFET. Typical values for CBOOT range
from 0.1μF to 1μF. Ensure that CBOOT is placed near the IC.0lO嘉泰姆

180lO嘉泰姆

UGATE20lO嘉泰姆

High-side Gate Driver Output for Channel 2. Connect this pin to the gate of high-side MOSFET.
This pin is monitored by the adaptive shoot-through protection circuitry to determine when the
high-side MOSFET has turned off.0lO嘉泰姆

190lO嘉泰姆

PHASE20lO嘉泰姆

Switch Node for Channel 2. 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 UGATE2 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 that is common in a power supply system.0lO嘉泰姆

200lO嘉泰姆

LGATE20lO嘉泰姆

Low-side Gate Driver Output for Channel 2. Connect this pin to the gate of low-side MOSFET.
This pin is monitored by the adaptive shoot-through protection circuitry to determine when the
low-side MOSFET has turned off.0lO嘉泰姆

210lO嘉泰姆

VCCDRV0lO嘉泰姆

Drive for External Linear Regulator. This pin is the drive output for the external linear regulator.
Connect this pin to base/gate of NPN/NMOS transistor as the pass element.0lO嘉泰姆

220lO嘉泰姆

VCC0lO嘉泰姆

Supply Voltage. This pin along with VCCDRV pin and external pass element provides 8.5V
regulated bias supply, low-side gate drivers, and the bootstrap circuit for high-side drivers. This pin
can receive a well-decoupled 8V~13.2V supply voltage alone if the VCCDRV is left open. Ensure
that this pin is bypassed by a ceramic capacitor next to the pin.0lO嘉泰姆

230lO嘉泰姆

LGATE10lO嘉泰姆

Low-side Gate Driver Output for Channel 1. Connect this pin to the gate of low-side MOSFET.
This pin is monitored by the adaptive shoot-through protection circuitry to determine when the
low-side MOSFET has turned off.0lO嘉泰姆

PIN0lO嘉泰姆

FUNCTION0lO嘉泰姆

NO.0lO嘉泰姆

NAME0lO嘉泰姆

240lO嘉泰姆

PHASE10lO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.0lO嘉泰姆

250lO嘉泰姆

PGND0lO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.0lO嘉泰姆

六.电路原理图</span>0lO嘉泰姆


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COT0lO嘉泰姆

10lO嘉泰姆

10lO嘉泰姆

250lO嘉泰姆

30lO嘉泰姆

250lO嘉泰姆

0.50lO嘉泰姆

50lO嘉泰姆

3500lO嘉泰姆

CXSD62940lO嘉泰姆

QFN4x4-240lO嘉泰姆

CM0lO嘉泰姆

20lO嘉泰姆

10lO嘉泰姆

400lO嘉泰姆

4.50lO嘉泰姆

13.20lO嘉泰姆

0.60lO嘉泰姆

5~120lO嘉泰姆

40000lO嘉泰姆

CXSD62950lO嘉泰姆

SOP8P0lO嘉泰姆

TDFN3x3-100lO嘉泰姆

VM0lO嘉泰姆

10lO嘉泰姆

10lO嘉泰姆

200lO嘉泰姆

30lO嘉泰姆

13.20lO嘉泰姆

0.80lO嘉泰姆

5~120lO嘉泰姆

25000lO嘉泰姆

CXSD6296A|B|C|D0lO嘉泰姆

SOP8P0lO嘉泰姆

VM0lO嘉泰姆

10lO嘉泰姆

10lO嘉泰姆

250lO嘉泰姆

30lO嘉泰姆

13.20lO嘉泰姆

0.6|0.80lO嘉泰姆

5~120lO嘉泰姆

12000lO嘉泰姆

CXSD62970lO嘉泰姆

TDFN3x3-100lO嘉泰姆

VM0lO嘉泰姆

10lO嘉泰姆

10lO嘉泰姆

250lO嘉泰姆

40lO嘉泰姆

13.20lO嘉泰姆

0.80lO嘉泰姆

5~120lO嘉泰姆

20000lO嘉泰姆

CXSD62980lO嘉泰姆

TDFN3x3-100lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

10lO嘉泰姆

250lO嘉泰姆

4.50lO嘉泰姆

250lO嘉泰姆

0.60lO嘉泰姆

5~120lO嘉泰姆

800lO嘉泰姆

CXSD6299|A0lO嘉泰姆

SOP-8P0lO嘉泰姆

VM0lO嘉泰姆

10lO嘉泰姆

10lO嘉泰姆

250lO嘉泰姆

4.50lO嘉泰姆

13.20lO嘉泰姆

0.80lO嘉泰姆

5~120lO嘉泰姆

160000lO嘉泰姆

CXSD621000lO嘉泰姆

TQFN3x3-100lO嘉泰姆

VM0lO嘉泰姆

10lO嘉泰姆

10lO嘉泰姆

250lO嘉泰姆

4.50lO嘉泰姆

13.20lO嘉泰姆

0.60lO嘉泰姆

5~120lO嘉泰姆

25000lO嘉泰姆

CXSD62101|L0lO嘉泰姆

TDFN3x3-100lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

10lO嘉泰姆

300lO嘉泰姆

30lO嘉泰姆

250lO嘉泰姆

0.80lO嘉泰姆

5~120lO嘉泰姆

20000lO嘉泰姆

CXSD621020lO嘉泰姆

TQFN3x3-160lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

10lO嘉泰姆

300lO嘉泰姆

1.80lO嘉泰姆

280lO嘉泰姆

0.60lO嘉泰姆

50lO嘉泰姆

6000lO嘉泰姆

CXSD62102A0lO嘉泰姆

TQFN 3x3 160lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

10lO嘉泰姆

300lO嘉泰姆

1.80lO嘉泰姆

280lO嘉泰姆

0.60lO嘉泰姆

50lO嘉泰姆

6000lO嘉泰姆

CXSD621030lO嘉泰姆

QFN4x4-240lO嘉泰姆

VM0lO嘉泰姆

20lO嘉泰姆

10lO嘉泰姆

500lO嘉泰姆

4.50lO嘉泰姆

13.20lO嘉泰姆

0.60lO嘉泰姆

5~120lO嘉泰姆

50000lO嘉泰姆

CXSD621040lO嘉泰姆

TQFN4x4-240lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

20lO嘉泰姆

150lO嘉泰姆

60lO嘉泰姆

250lO嘉泰姆

20lO嘉泰姆

N0lO嘉泰姆

5500lO嘉泰姆

CXSD621050lO嘉泰姆

TQFN4x4-240lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

20lO嘉泰姆

150lO嘉泰姆

60lO嘉泰姆

250lO嘉泰姆

20lO嘉泰姆

N0lO嘉泰姆

5500lO嘉泰姆

CXSD62106|A0lO嘉泰姆

TQFN4x4-40lO嘉泰姆

TQFN3x3-200lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

20lO嘉泰姆

200lO嘉泰姆

30lO嘉泰姆

280lO嘉泰姆

0.750lO嘉泰姆

50lO嘉泰姆

8000lO嘉泰姆

CXSD621070lO嘉泰姆

TQFN3x3-160lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

10lO嘉泰姆

200lO嘉泰姆

1.80lO嘉泰姆

280lO嘉泰姆

0.750lO嘉泰姆

50lO嘉泰姆

4000lO嘉泰姆

CXSD621080lO嘉泰姆

QFN3.5x3.5-140lO嘉泰姆

TQFN3x3-160lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

10lO嘉泰姆

200lO嘉泰姆

1.80lO嘉泰姆

280lO嘉泰姆

0.750lO嘉泰姆

50lO嘉泰姆

4000lO嘉泰姆

CXSD621090lO嘉泰姆

TQFN3x3-160lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

20lO嘉泰姆

200lO嘉泰姆

1.80lO嘉泰姆

280lO嘉泰姆

0.750lO嘉泰姆

50lO嘉泰姆

4000lO嘉泰姆

CXSD621100lO嘉泰姆

QFN3x3-200lO嘉泰姆

TQFN3x3-160lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

20lO嘉泰姆

200lO嘉泰姆

30lO嘉泰姆

280lO嘉泰姆

1.8|1.5|0.50lO嘉泰姆

50lO嘉泰姆

7400lO嘉泰姆

CXSD621110lO嘉泰姆

TQFN4x4-240lO嘉泰姆

|QFN3x3-200lO嘉泰姆

CM0lO嘉泰姆

10lO嘉泰姆

20lO嘉泰姆

150lO嘉泰姆

50lO嘉泰姆

280lO嘉泰姆

0.50lO嘉泰姆

N0lO嘉泰姆

30000lO嘉泰姆

CXSD621120lO嘉泰姆

TDFN3x3-100lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

10lO嘉泰姆

200lO嘉泰姆

1.80lO嘉泰姆

280lO嘉泰姆

0.50lO嘉泰姆

50lO嘉泰姆

2500lO嘉泰姆

CXSD62113|C0lO嘉泰姆

TQFN3x3-200lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

20lO嘉泰姆

150lO嘉泰姆

60lO嘉泰姆

250lO嘉泰姆

20lO嘉泰姆

N0lO嘉泰姆

5500lO嘉泰姆

CXSD62113E0lO嘉泰姆

TQFN 3x3 200lO嘉泰姆

COT0lO嘉泰姆

20lO嘉泰姆

20lO嘉泰姆

110lO嘉泰姆

60lO嘉泰姆

250lO嘉泰姆

20lO嘉泰姆

N0lO嘉泰姆

5500lO嘉泰姆

CXSD621140lO嘉泰姆

TQFN3x3-200lO嘉泰姆

COT0lO嘉泰姆

20lO嘉泰姆

20lO嘉泰姆

110lO嘉泰姆

5.50lO嘉泰姆

250lO嘉泰姆

20lO嘉泰姆

N0lO嘉泰姆

2800lO嘉泰姆

CXSD621150lO嘉泰姆

QFN4x4-240lO嘉泰姆

VM0lO嘉泰姆

20lO嘉泰姆

10lO嘉泰姆

600lO嘉泰姆

3.10lO嘉泰姆

13.20lO嘉泰姆

0.850lO嘉泰姆

120lO嘉泰姆

50000lO嘉泰姆

CXSD62116A|B|C0lO嘉泰姆

SOP-8P0lO嘉泰姆

VM0lO嘉泰姆

10lO嘉泰姆

10lO嘉泰姆

200lO嘉泰姆

2.90lO嘉泰姆

13.20lO嘉泰姆

0.80lO嘉泰姆

120lO嘉泰姆

160000lO嘉泰姆

CXSD621170lO嘉泰姆

SOP-200lO嘉泰姆

VM0lO嘉泰姆

20lO嘉泰姆

20lO嘉泰姆

300lO嘉泰姆

100lO嘉泰姆

13.20lO嘉泰姆

10lO嘉泰姆

120lO嘉泰姆

50000lO嘉泰姆

CXSD621180lO嘉泰姆

TDFN3x3-100lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

10lO嘉泰姆

250lO嘉泰姆

1.80lO嘉泰姆

280lO嘉泰姆

0.70lO嘉泰姆

50lO嘉泰姆

2500lO嘉泰姆

CXSD621190lO嘉泰姆

TQFN3x3-200lO嘉泰姆

COT0lO嘉泰姆

20lO嘉泰姆

10lO嘉泰姆

400lO嘉泰姆

1.80lO嘉泰姆

250lO嘉泰姆

REFIN Setting0lO嘉泰姆

50lO嘉泰姆

7000lO嘉泰姆

CXSD621200lO嘉泰姆

QFN 3x3 200lO嘉泰姆

TQFN 3x3 160lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

20lO嘉泰姆

200lO嘉泰姆

30lO嘉泰姆

280lO嘉泰姆

1.8|1.5 1.35|1.2 0.50lO嘉泰姆

50lO嘉泰姆

8000lO嘉泰姆

CXSD62121A0lO嘉泰姆

TQFN3x3 200lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

20lO嘉泰姆

150lO嘉泰姆

30lO嘉泰姆

280lO嘉泰姆

0.750lO嘉泰姆

50lO嘉泰姆

2200lO嘉泰姆

CXSD62121B0lO嘉泰姆

TQFN3x3 200lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

20lO嘉泰姆

150lO嘉泰姆

30lO嘉泰姆

280lO嘉泰姆

0.750lO嘉泰姆

50lO嘉泰姆

2200lO嘉泰姆

CXSD621210lO嘉泰姆

TQFN3x3-200lO嘉泰姆

COT0lO嘉泰姆

10lO嘉泰姆

20lO嘉泰姆

200lO嘉泰姆

30lO嘉泰姆

280lO嘉泰姆

0.750lO嘉泰姆

50lO嘉泰姆

180      0lO嘉泰姆

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