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首页 > 产品中心 > 电源管理 > DC降压型芯片 > Buck降压型芯片 >CXSD6292单相恒定时间和同步PWM控制器驱动N通道mosfet降低电池的高压低压芯片
CXSD6292单相恒定时间和同步PWM控制器驱动N通道mosfet降低电池的高压低压芯片
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CXSD6292提供卓越的瞬态响应和准确的直流电脉冲频率调制模式下的电压输出(PFM)模式下,CXSD6292在轻载情况下提供非常高的效率加载调制开关频率。当电感电流是连续的,运行自动进入脉宽调制模式恒定开关频率。

CXSD6292单相恒定时间和同步PWM控制器驱动N通道mosfet降低电池的高压低压芯片
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产品简介

目录8ml嘉泰姆

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

一,产品概述(General Description)         8ml嘉泰姆


       The CXSD6292 is a single-phase, constant-on-time, and synchronous8ml嘉泰姆
PWM controller which drives N-channel MOSFETs. The CXSD6292 steps8ml嘉泰姆
down high voltage of a battery to generate low-voltage chipset or RAM supplies8ml嘉泰姆
in notebook computers.8ml嘉泰姆
        The CXSD6292 provides excellent transient response and accurate DC8ml嘉泰姆
voltage output in either PFM or PWM Mode.In Pulse Frequency Modulation8ml嘉泰姆
(PFM) Mode, the CXSD6292 provides very high efficiency over light load8ml嘉泰姆
with loading-modulated switching frequencies. When the inductor current8ml嘉泰姆
is continuous, the operation automatically enters PWM mode with relatively8ml嘉泰姆
constant switching frequency.For QFN4x4-16A and TQFN3x3-16 packages,8ml嘉泰姆
the Forced-PWM Mode works nearly at constant frequency for low-noise8ml嘉泰姆
requirements.8ml嘉泰姆
         The CXSD6292 is equipped with accurate over-current,output under-8ml嘉泰姆
voltage, and over-voltage protections per-fect for NB application. A Power-8ml嘉泰姆
On-Reset function moni-tors the voltage on VCC pin to prevent errorneous8ml嘉泰姆
opera-tion during power-on. The CXSD6292 has a digital soft-start and soft-stop.8ml嘉泰姆
The internal integrated soft-start ramps up the output voltage with controlled slew8ml嘉泰姆
rate to reduce the start-up current. The digital soft-stop function actively discharges8ml嘉泰姆
the output capacitors with controlled reverse inductor current.8ml嘉泰姆
     The CXSD6292 is available in SSOP-16, QFN4x4-16A, and TQFN3x3-16 packages8ml嘉泰姆
二.产品特点(Features)8ml嘉泰姆


1.)Adjustable Output Voltage from +0.6V to +3.3V8ml嘉泰姆
    - 0.6V Reference Voltage8ml嘉泰姆
    - ±1% Accuracy Over Temperature8ml嘉泰姆
2.)Operates from an Input Battery Voltage Range of +3V to +25V8ml嘉泰姆
3.)Wide Output Load Range from 0A to 25A8ml嘉泰姆
4.)Power-On-Reset Monitoring on VCC Pin8ml嘉泰姆
5.)Excellent Line and Load Transient Response8ml嘉泰姆
6.)PFM Mode for Increased Light Load Efficiency8ml嘉泰姆
7.)Programmable PWM Frequency from 200kHz to 600kHz8ml嘉泰姆
8.)Integrated MOSFET Drivers and Bootstrap Diode8ml嘉泰姆
9.)Internal Integrated Soft-Start and Soft-Stop8ml嘉泰姆
10.)Selectable Forced PWM or Automatic PFM/PWM8ml嘉泰姆
11.)Mode (only for QFN4x4-16A and TQFN3x3-16 Packages)8ml嘉泰姆
      Power Good Monitoring8ml嘉泰姆
12.)Fault Identification by PGOOD Pull-Down Resistance8ml嘉泰姆
13.)70% Under-Voltage Protection (UVP)8ml嘉泰姆
14.)124% Over-Voltage Protection (OVP)8ml嘉泰姆
15.)Adjustable Over-Current Protection (OCP)8ml嘉泰姆
      - Sensing Low-Side MOSFET’s Current8ml嘉泰姆
16.)Over-Temperature Protection (OTP)8ml嘉泰姆
17.)SSOP-16, Compact 4mmx4mm QFN-16 (QFN4x4-8ml嘉泰姆
     16A), and TQFN3x3-16 Packages8ml嘉泰姆
18.)Lead Free and Green Devices Available8ml嘉泰姆
三,应用范围 (Applications)8ml嘉泰姆


PCI Express Graphical Processing Unit8ml嘉泰姆
Notebook Adapter8ml嘉泰姆
Auxiliary Power Rail8ml嘉泰姆
VRM8ml嘉泰姆
四.下载产品资料PDF文档 8ml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8ml嘉泰姆

 QQ截图20160419174301.jpg8ml嘉泰姆

五,产品封装图 (Package)8ml嘉泰姆


blob.png8ml嘉泰姆

六.电路原理图8ml嘉泰姆


blob.png8ml嘉泰姆
七,功能概述8ml嘉泰姆


Power Good Indicator8ml嘉泰姆
The CXSD6292 features an open-drain PGOOD output pin to indicate one of the IC’s working statuses 8ml嘉泰姆

including soft-start, under-voltage fault, over-current fault, and over-voltage faule. The unique fault-8ml嘉泰姆

identification capability can drastically reduce trouble-shooting time and effort.8ml嘉泰姆
The pull-down resistance of the PGOOD pin correspondsto the fault status of the controller. During 8ml嘉泰姆

soft-start or if an under voltage fault occurs, the PGOOD pull-down re-sistance is 95Ω, or 32Ω for 8ml嘉泰姆

an over current fault, or 63Ω for an over voltage fault. The pull-low resistance is unde-fined if VCC 8ml嘉泰姆

is below the rising/falling POR threshold.8ml嘉泰姆
Over-Temperature Protection (OTP)8ml嘉泰姆
When the junction temperature increases above the ris-ing threshold temperature TOTR, the IC 8ml嘉泰姆

will enter the over-temperature protection (OTP) state that suspends the PWM, which forces the 8ml嘉泰姆

LG and UG gate drivers to output low voltages. The status of the PGOOD pin does not change, nor8ml嘉泰姆

 does the converter latch-off. The thermal sensor allows the converters to start a start-up process 8ml嘉泰姆

and regulate the output voltage again after the junction temperature cools by 25oC. The OTP is 8ml嘉泰姆

designed with a 25oC hysteresis to lower the average TJ during continu-ous thermal overload 8ml嘉泰姆

conditions, which increases life- time of the CXSD6292.8ml嘉泰姆

Over-Current Protection (OCP) and Short-Circuit Pro-tection (SCP)8ml嘉泰姆
The over-current protection (OCP) is designed to resist the slow slew rate load current; on the other8ml嘉泰姆

 hand, the short-circuit protection (SCP) is used to take care of rapid shorted output. The setpoint for8ml嘉泰姆

 OCP and SCP is pro-grammed with resistor RSEN that is connected across the ISEN pin and drain of8ml嘉泰姆

 the low-side MOSFET. The SCP setpoint is internally set to twice the OCP setpoint.8ml嘉泰姆
The inductor current develops a negative voltage across the RDS(ON) of the low-side MOSFET that is8ml嘉泰姆

 sampled and held shortly before LG gate-driver output goes low. The OCP fault occurs if ISEN rises 8ml嘉泰姆

above the OCP threshold current IOC (typical :26μA) while attempting to null the nega-tive voltage 8ml嘉泰姆

across the PHASE and GND pins. When the ISEN exceeds IOC, the OCP counter starts to work.8ml嘉泰姆
Meanwhile, pulses on all the PWM (ISEN > IOC) remains for 20μs, the OCP will be triggered. When 8ml嘉泰姆

ISEN falls below IOC on a PWM pulses before 20μs has elapsed, the counter will be reset. The SCP8ml嘉泰姆

 fault will occur within 10μs when I SEN exceeds twice I OC. The relationship between the sampled 8ml嘉泰姆

current and MOSFET current is given by:8ml嘉泰姆
ISEN × RSEN = RDS ( ON ) × IL8ml嘉泰姆
Which means the current sensing pin will source current to make the voltage drop on the MOSFET 8ml嘉泰姆

and is equal to the voltage generated on the sensing resistor along the ISEN pin current flowing path.8ml嘉泰姆
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COT8ml嘉泰姆

18ml嘉泰姆

18ml嘉泰姆

308ml嘉泰姆

1.88ml嘉泰姆

288ml嘉泰姆

0.68ml嘉泰姆

58ml嘉泰姆

6008ml嘉泰姆

CXSD62102A8ml嘉泰姆

TQFN 3x3 168ml嘉泰姆

COT8ml嘉泰姆

18ml嘉泰姆

18ml嘉泰姆

308ml嘉泰姆

1.88ml嘉泰姆

288ml嘉泰姆

0.68ml嘉泰姆

58ml嘉泰姆

6008ml嘉泰姆

CXSD621038ml嘉泰姆

QFN4x4-248ml嘉泰姆

VM8ml嘉泰姆

28ml嘉泰姆

18ml嘉泰姆

508ml嘉泰姆

4.58ml嘉泰姆

13.28ml嘉泰姆

0.68ml嘉泰姆

5~128ml嘉泰姆

50008ml嘉泰姆

CXSD621048ml嘉泰姆

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COT8ml嘉泰姆

18ml嘉泰姆

28ml嘉泰姆

158ml嘉泰姆

68ml嘉泰姆

258ml嘉泰姆

28ml嘉泰姆

N8ml嘉泰姆

5508ml嘉泰姆

CXSD621058ml嘉泰姆

TQFN4x4-248ml嘉泰姆

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18ml嘉泰姆

28ml嘉泰姆

158ml嘉泰姆

68ml嘉泰姆

258ml嘉泰姆

28ml嘉泰姆

N8ml嘉泰姆

5508ml嘉泰姆

CXSD62106|A8ml嘉泰姆

TQFN4x4-48ml嘉泰姆

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18ml嘉泰姆

28ml嘉泰姆

208ml嘉泰姆

38ml嘉泰姆

288ml嘉泰姆

0.758ml嘉泰姆

58ml嘉泰姆

8008ml嘉泰姆

CXSD621078ml嘉泰姆

TQFN3x3-168ml嘉泰姆

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18ml嘉泰姆

18ml嘉泰姆

208ml嘉泰姆

1.88ml嘉泰姆

288ml嘉泰姆

0.758ml嘉泰姆

58ml嘉泰姆

4008ml嘉泰姆

CXSD621088ml嘉泰姆

QFN3.5x3.5-148ml嘉泰姆

TQFN3x3-168ml嘉泰姆

COT8ml嘉泰姆

18ml嘉泰姆

18ml嘉泰姆

208ml嘉泰姆

1.88ml嘉泰姆

288ml嘉泰姆

0.758ml嘉泰姆

58ml嘉泰姆

4008ml嘉泰姆

CXSD621098ml嘉泰姆

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18ml嘉泰姆

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208ml嘉泰姆

1.88ml嘉泰姆

288ml嘉泰姆

0.758ml嘉泰姆

58ml嘉泰姆

4008ml嘉泰姆

CXSD621108ml嘉泰姆

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1.8|1.5|0.58ml嘉泰姆

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|QFN3x3-208ml嘉泰姆

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28ml嘉泰姆

158ml嘉泰姆

58ml嘉泰姆

288ml嘉泰姆

0.58ml嘉泰姆

N8ml嘉泰姆

30008ml嘉泰姆

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TDFN3x3-108ml嘉泰姆

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18ml嘉泰姆

208ml嘉泰姆

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288ml嘉泰姆

0.58ml嘉泰姆

58ml嘉泰姆

2508ml嘉泰姆

CXSD62113|C8ml嘉泰姆

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CXSD62113E8ml嘉泰姆

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28ml嘉泰姆

118ml嘉泰姆

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128ml嘉泰姆

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58ml嘉泰姆

7008ml嘉泰姆

CXSD621208ml嘉泰姆

QFN 3x3 208ml嘉泰姆

TQFN 3x3 168ml嘉泰姆

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18ml嘉泰姆

28ml嘉泰姆

208ml嘉泰姆

38ml嘉泰姆

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CXSD62121A8ml嘉泰姆

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28ml嘉泰姆

158ml嘉泰姆

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CXSD62121B8ml嘉泰姆

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COT8ml嘉泰姆

18ml嘉泰姆

28ml嘉泰姆

158ml嘉泰姆

38ml嘉泰姆

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 8ml嘉泰姆

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