CXSD62113|C

CXSD62113|C将双降压、恒定时间、同步PWM控制器(为每个通道驱动双N通道mosfet)和两个低电压降稳压器以及各种保护集成到一个芯片中。PWM控制器降压电池的高电压以产生用于NB应用的低电压。PWM1和PWM2的输出可以通过在VOUTx和GND之间设置电阻分压器从2V调整到5.5V。

CXSD62113|C双降压恒定开启时间同步的PWM控制器每个通道驱动双N通道mosfet

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产品简介

目录EWP嘉泰姆

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

一,产品概述(General Description)         EWP嘉泰姆


  The CXSD6211CXSD62113A CXSD62113B CXSD62113C CXSD62113E integrates dual step-down, constant-on-time,synchronous PWM controllers (that drives dual N-channel MOSFETs for each channel) and two low drop-out regulators as well as various protections into a chip.The PWM controllers step down high voltage of a battery to generate low-voltage for NB applications. The output of PWM1 and PWM2 can be adjusted from 2V to 5.5V by setting a resistive voltage-divider from VOUTx to GND.EWP嘉泰姆

The linear regulators provide 5V and 3.3V output for standby power supply. The linear regulators provide up to 100mA output current. When the PWMx output voltage is higher than LDOx bypass threshold, the related LDOx regulator is shut off and its output is connected to VOUTx by internal switchover MOSFET. It can save power dissipation. The charge pump circuit with 270kHz clock driver uses VOUT1 as its power supply to generate ap-proximately 15V DC voltage.EWP嘉泰姆
  The CXSD62113/A/B/C provides excellent transient response and accurate DC output voltage in either PFM or PWM Mode. In Pulse-Frequency Mode (PFM), theEWP嘉泰姆
CXSD62113/A/B/C provides very high efficiency over light to heavy loads with loading-modulated switching frequencies. The Forced-PWM Mode works nearly atEWP嘉泰姆

constant frequency for low-noise requirements. The unique ultrasonic mode  maintains the switching frequency above 25kHz, which eliminates noise inEWP嘉泰姆
audio application.EWP嘉泰姆
  The CXSD62113/A/B/C is equipped with accurate sourc-ing and current-limit, output under-voltage output over-voltage protections, being perfect for NB applications. A 1.4ms (typ.) digital soft-start can reduce the start-up current. A soft-stop function actively discharges the output capacitors by the discharge device. The CXSD62113/A/B has individual enable controls for each PWM channels. Pulling both EN1/2 pin low shuts down the all of outputs unless LDO3 output. The LDO3 and LDO5 of CXSD62113A/C are always on standby power.EWP嘉泰姆
The CXSD62113/A/B/C is available in a TQFN3x3-20 package.EWP嘉泰姆
二.产品特点(Features)EWP嘉泰姆


Wide Input voltage Range from 6V to 25VEWP嘉泰姆
Provide 5 Independent Outputs with ±1.0% Accuracy Over-TemperatureEWP嘉泰姆
- PWM1 Controller with Adjustable (2V to 5.5V) Out-putEWP嘉泰姆
PWM2 Controller with Adjustable (2V to 5.5V) Out-putEWP嘉泰姆
100mA Low Dropout Regulator (LDO5) with Fixed 5V OutputEWP嘉泰姆
100mA Low Dropout Regulator (LDO3) with Fixed 3.3V OutputEWP嘉泰姆
270kHz Clock Signal for 15V Charge Pump (Used VOUT1 as Its Power Supply)EWP嘉泰姆
Excellent Line/Load Regulations about ±1.5% Over-Temperature RangeEWP嘉泰姆
Built in POR Control Scheme ImplementedEWP嘉泰姆
Constant On-Time Control Scheme with FrequencyEWP嘉泰姆
Compensation for PWM ModeEWP嘉泰姆
Selectable Switching Frequency in PWM ModeEWP嘉泰姆
Built-in Digital Soft-Start for PWM Outputs and Soft-EWP嘉泰姆
Stop for PWM Outputs and LDO OutputsEWP嘉泰姆
Integrated Bootstrap Forward P-CH MOSFETEWP嘉泰姆
High Efficiency over Light to Full Load Range (PWMs)EWP嘉泰姆
Built-in Power Good Indicators (PWMs)EWP嘉泰姆
Independent Enable Inputs (PWMs, LDO)EWP嘉泰姆
70% Under-Voltage and 125% Over-Voltage Protec-tions (PWM)EWP嘉泰姆
Adjustable Current-Limit Protection (PWMs)EWP嘉泰姆
- Using Sense Low-Side MOSFET’s RDS(ON)EWP嘉泰姆
Over-Temperature ProtectionEWP嘉泰姆
3mmx3mm Thin QFN-20 (TQFN3x3-20) packageEWP嘉泰姆
Lead Free and Green Device Available (RoHS Compliant)EWP嘉泰姆
三,应用范围 (Applications)EWP嘉泰姆


Notebook and Sub-Notebook ComputersEWP嘉泰姆
Portable DevicesEWP嘉泰姆
DDR1, DDR2, and DDR3 Power SuppliesEWP嘉泰姆
3-Cell and 4-Cell Li+ Battery-Powered DevicesEWP嘉泰姆
Graphic CardsEWP嘉泰姆
Game ConsolesEWP嘉泰姆
TelecommunicationsEWP嘉泰姆
四.下载产品资料PDF文档 EWP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EWP嘉泰姆

 QQ截图20160419174301.jpgEWP嘉泰姆

五,产品封装图 (Package)EWP嘉泰姆


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六.电路原理图EWP嘉泰姆


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七,功能概述EWP嘉泰姆


Input Capacitor SelectionEWP嘉泰姆
The input capacitor is chosen based on the voltage rating and the RMS current rating. For reliable operation, select the capacitor voltage rating to be at least 1.3 times higher than the maximum input voltage. The maximum RMS current rating requirement is approximately IOUT/2, where IOUT is the load current. During power up, the input capaci-tors have to handle large amount of surge current. In low-duty notebook appliactions, ceramic capacitors are remmended. The capacitors must be connected between the drain of high-side MOSFET and the source of low-side MOSFET with very low-impeadance PCB layout.EWP嘉泰姆
 MOSFET SelectionEWP嘉泰姆
The application for a notebook battery with a maximum volt-age of 24V, at least a minimum 30V MOSFETs should be used. The design has to trade off the gate charge with the RDS(ON) of the MOSFET:EWP嘉泰姆
· For the low-side MOSFET, before it is turned on, the body diode has been conducted. The low-side MOSFETEWP嘉泰姆
driver will not charge the miller capacitor of this MOSFET.EWP嘉泰姆
In the turning off process of the low-side MOSFET,the load current will shift to the body diode first. TheEWP嘉泰姆
high dv/dt of the phase node voltage will charge the miller capacitor through the low-side MOSFET driverEWP嘉泰姆
sinking current path. This results in much less switching loss of the low-side MOSFETs. The dutyEWP嘉泰姆
cycle is often very small in high battery voltage applications, and the low-side MOSFET will con-EWP嘉泰姆
duct most of the switching cycle; therefore, the less the RDS(ON) of the low-side MOSFET, the less the powerEWP嘉泰姆
loss. The gate charge for this MOSFET is usually a secondary consideration. The high-side MOSFETEWP嘉泰姆
does not have this zero voltage switching condition, and because it conducts for less timeEWP嘉泰姆
compared to the low-side MOSFET, the switching loss tends to be dominant. Priority should be givenEWP嘉泰姆
to the MOSFETs with less gate charge, so that both the gate driver loss and switching loss will be minimized.EWP嘉泰姆
The selection of the N-channel power MOSFETs are de-termined by the RDS(ON), reversing transfer capacitanceEWP嘉泰姆
Layout ConsiderationEWP嘉泰姆
In any high switching frequency converter, a correct layout is important to ensure proper operation of the regulator.EWP嘉泰姆
With power devices switching at higher frequency, the resulting current transient will cause voltage spike across the interconnecting impedance and parasitic circuit elements. As an example, consider the turn-off transition of the PWM MOSFET. Before turn-off condition, the MOSFET is carrying the full load current. During turn-off,current stops flowing in the MOSFET and is freewheeling by the lower MOSFET and parasitic diode. Any parasitic inductance of the circuit generates a large voltage spike during the switching interval. In general, using short and wide printed circuit traces should minimize interconnect-ing impedances and the magnitude of voltage spike. And signal and power grounds are to be kept separating and finally combined to use the ground plane construction or single point grounding. The best tie-point between the signal ground and the power ground is at the negative side of the output capacitor on each channel, where there is less noise. Noisy traces beneath the IC are not recommended. Below is a checklist for your layout:EWP嘉泰姆
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1EWP嘉泰姆

1EWP嘉泰姆

30EWP嘉泰姆

3EWP嘉泰姆

25EWP嘉泰姆

0.8EWP嘉泰姆

5~12EWP嘉泰姆

2000EWP嘉泰姆

CXSD62102EWP嘉泰姆

TQFN3x3-16EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

1EWP嘉泰姆

30EWP嘉泰姆

1.8EWP嘉泰姆

28EWP嘉泰姆

0.6EWP嘉泰姆

5EWP嘉泰姆

600EWP嘉泰姆

CXSD62102AEWP嘉泰姆

TQFN 3x3 16EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

1EWP嘉泰姆

30EWP嘉泰姆

1.8EWP嘉泰姆

28EWP嘉泰姆

0.6EWP嘉泰姆

5EWP嘉泰姆

600EWP嘉泰姆

CXSD62103EWP嘉泰姆

QFN4x4-24EWP嘉泰姆

VMEWP嘉泰姆

2EWP嘉泰姆

1EWP嘉泰姆

50EWP嘉泰姆

4.5EWP嘉泰姆

13.2EWP嘉泰姆

0.6EWP嘉泰姆

5~12EWP嘉泰姆

5000EWP嘉泰姆

CXSD62104EWP嘉泰姆

TQFN4x4-24EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

2EWP嘉泰姆

15EWP嘉泰姆

6EWP嘉泰姆

25EWP嘉泰姆

2EWP嘉泰姆

NEWP嘉泰姆

550EWP嘉泰姆

CXSD62105EWP嘉泰姆

TQFN4x4-24EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

2EWP嘉泰姆

15EWP嘉泰姆

6EWP嘉泰姆

25EWP嘉泰姆

2EWP嘉泰姆

NEWP嘉泰姆

550EWP嘉泰姆

CXSD62106|AEWP嘉泰姆

TQFN4x4-4EWP嘉泰姆

TQFN3x3-20EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

2EWP嘉泰姆

20EWP嘉泰姆

3EWP嘉泰姆

28EWP嘉泰姆

0.75EWP嘉泰姆

5EWP嘉泰姆

800EWP嘉泰姆

CXSD62107EWP嘉泰姆

TQFN3x3-16EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

1EWP嘉泰姆

20EWP嘉泰姆

1.8EWP嘉泰姆

28EWP嘉泰姆

0.75EWP嘉泰姆

5EWP嘉泰姆

400EWP嘉泰姆

CXSD62108EWP嘉泰姆

QFN3.5x3.5-14EWP嘉泰姆

TQFN3x3-16EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

1EWP嘉泰姆

20EWP嘉泰姆

1.8EWP嘉泰姆

28EWP嘉泰姆

0.75EWP嘉泰姆

5EWP嘉泰姆

400EWP嘉泰姆

CXSD62109EWP嘉泰姆

TQFN3x3-16EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

2EWP嘉泰姆

20EWP嘉泰姆

1.8EWP嘉泰姆

28EWP嘉泰姆

0.75EWP嘉泰姆

5EWP嘉泰姆

400EWP嘉泰姆

CXSD62110EWP嘉泰姆

QFN3x3-20EWP嘉泰姆

TQFN3x3-16EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

2EWP嘉泰姆

20EWP嘉泰姆

3EWP嘉泰姆

28EWP嘉泰姆

1.8|1.5|0.5EWP嘉泰姆

5EWP嘉泰姆

740EWP嘉泰姆

CXSD62111EWP嘉泰姆

TQFN4x4-24EWP嘉泰姆

|QFN3x3-20EWP嘉泰姆

CMEWP嘉泰姆

1EWP嘉泰姆

2EWP嘉泰姆

15EWP嘉泰姆

5EWP嘉泰姆

28EWP嘉泰姆

0.5EWP嘉泰姆

NEWP嘉泰姆

3000EWP嘉泰姆

CXSD62112EWP嘉泰姆

TDFN3x3-10EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

1EWP嘉泰姆

20EWP嘉泰姆

1.8EWP嘉泰姆

28EWP嘉泰姆

0.5EWP嘉泰姆

5EWP嘉泰姆

250EWP嘉泰姆

CXSD62113|CEWP嘉泰姆

TQFN3x3-20EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

2EWP嘉泰姆

15EWP嘉泰姆

6EWP嘉泰姆

25EWP嘉泰姆

2EWP嘉泰姆

NEWP嘉泰姆

550EWP嘉泰姆

CXSD62113EEWP嘉泰姆

TQFN 3x3 20EWP嘉泰姆

COTEWP嘉泰姆

2EWP嘉泰姆

2EWP嘉泰姆

11EWP嘉泰姆

6EWP嘉泰姆

25EWP嘉泰姆

2EWP嘉泰姆

NEWP嘉泰姆

550EWP嘉泰姆

CXSD62114EWP嘉泰姆

TQFN3x3-20EWP嘉泰姆

COTEWP嘉泰姆

2EWP嘉泰姆

2EWP嘉泰姆

11EWP嘉泰姆

5.5EWP嘉泰姆

25EWP嘉泰姆

2EWP嘉泰姆

NEWP嘉泰姆

280EWP嘉泰姆

CXSD62115EWP嘉泰姆

QFN4x4-24EWP嘉泰姆

VMEWP嘉泰姆

2EWP嘉泰姆

1EWP嘉泰姆

60EWP嘉泰姆

3.1EWP嘉泰姆

13.2EWP嘉泰姆

0.85EWP嘉泰姆

12EWP嘉泰姆

5000EWP嘉泰姆

CXSD62116A|B|CEWP嘉泰姆

SOP-8PEWP嘉泰姆

VMEWP嘉泰姆

1EWP嘉泰姆

1EWP嘉泰姆

20EWP嘉泰姆

2.9EWP嘉泰姆

13.2EWP嘉泰姆

0.8EWP嘉泰姆

12EWP嘉泰姆

16000EWP嘉泰姆

CXSD62117EWP嘉泰姆

SOP-20EWP嘉泰姆

VMEWP嘉泰姆

2EWP嘉泰姆

2EWP嘉泰姆

30EWP嘉泰姆

10EWP嘉泰姆

13.2EWP嘉泰姆

1EWP嘉泰姆

12EWP嘉泰姆

5000EWP嘉泰姆

CXSD62118EWP嘉泰姆

TDFN3x3-10EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

1EWP嘉泰姆

25EWP嘉泰姆

1.8EWP嘉泰姆

28EWP嘉泰姆

0.7EWP嘉泰姆

5EWP嘉泰姆

250EWP嘉泰姆

CXSD62119EWP嘉泰姆

TQFN3x3-20EWP嘉泰姆

COTEWP嘉泰姆

2EWP嘉泰姆

1EWP嘉泰姆

40EWP嘉泰姆

1.8EWP嘉泰姆

25EWP嘉泰姆

REFIN SettingEWP嘉泰姆

5EWP嘉泰姆

700EWP嘉泰姆

CXSD62120EWP嘉泰姆

QFN 3x3 20EWP嘉泰姆

TQFN 3x3 16EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

2EWP嘉泰姆

20EWP嘉泰姆

3EWP嘉泰姆

28EWP嘉泰姆

1.8|1.5 1.35|1.2 0.5EWP嘉泰姆

5EWP嘉泰姆

800EWP嘉泰姆

CXSD62121AEWP嘉泰姆

TQFN3x3 20EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

2EWP嘉泰姆

15EWP嘉泰姆

3EWP嘉泰姆

28EWP嘉泰姆

0.75EWP嘉泰姆

5EWP嘉泰姆

220EWP嘉泰姆

CXSD62121BEWP嘉泰姆

TQFN3x3 20EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

2EWP嘉泰姆

15EWP嘉泰姆

3EWP嘉泰姆

28EWP嘉泰姆

0.75EWP嘉泰姆

5EWP嘉泰姆

220EWP嘉泰姆

CXSD62121EWP嘉泰姆

TQFN3x3-20EWP嘉泰姆

COTEWP嘉泰姆

1EWP嘉泰姆

2EWP嘉泰姆

20EWP嘉泰姆

3EWP嘉泰姆

28EWP嘉泰姆

0.75EWP嘉泰姆

5EWP嘉泰姆

180EWP嘉泰姆

 EWP嘉泰姆

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