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CXSD62117双通道电压模式和同步PWM控制器驱动双N通道mosfet两个通道均采用180度相移

产品型号：	CXSD62117
产品类型：	DC-DC转换器
产品系列：	Buck降压型芯片
产品状态：	量产
浏览次数：	35 次

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产品简介

CXSD62117是双通道电压模式和同步驱动双N通道mosfet的PWM控制器。两个频道
在180度相位变化下运行。该装置集成了将控制、监视和保护功能集成到一个包中；提供
两个带过电压、过温度和过电流保护

技术参数

输入电压范围 (VIN)	≤ 10~13.2V
输出电压 (VOUT)	ADJV
输出电流 (IOUT)	30A
工作频率	1500 Hz
转换效率	95%%
封装类型	SOP-20
Topology	Buck VM降压型芯片
Control method	No. of PWM Outputs:2
Switching frequency	1500
Protection	Phase: 2
Features	静态工作电流 Quiescent Current (typ)(uA):5000
Application	Bias Voltage (typ) (V):12
Operating temp	-40℃~125℃
Reference design	反馈电压Reference Voltage(V):1

产品详细介绍

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                     6.电路原理图
7.功能概述       8.相关产品

一,产品概述(General Description)
The CXSD62117 is a dual channel voltage mode and syn-chronous
PWM controller which drives dual N-channel MOSFETs. The two channels
are operated with 180 de-gree phase shift.The device integrates all of the
control, monitoring, and protecting functions into a single package; provides
two controlled power output with over-voltage, over-temperature, and
over-current protections.
The CXSD62117 provides excellent regulation for output load variation.
The internal 1.0V temperature-compen- sated reference voltage provides
high accuracy of 0.8% over line and temperature. The device includes a
50kHz free-running triangle-wave oscillator that is adjustable from 50kHz
to 400kHz.The CXSD62117 has been equipped with excellent pro-tection
functions: POR, OCP, UVP, and OVP protections.The Power-On-Reset (POR)
circuit can monitor the VCC and OCSET voltage to make sure the supply
voltage ex-ceeds their threshold voltage while the controller is running. The
Over-Current Protection (OCP) monitors the output current by using the
voltage drop across the high side MOSFET’s RDS(ON). When the output
current reaches the trip point, the controller will be latched. Under-Voltage

Protection (UVP) and Over-Voltage Protection (OVP) moni-tor the FB
voltage to protect CXSD62117 from burnout when output voltage is
under 50% or over 120% of normal out-put voltage. The CXSD62117
is available in SOP-20 package.

二.产品特点(Features)
Single 12V Power Supply Required
Excellent Output Voltage Regulation
- 1.0V±0.8% Internal Reference Over Line and Temperature
Simple Single Loop Control Design
- Voltage Mode PWM Control 0~100% Duty Ratio
Programmable Frequency Range from 50kHz to
400kHz (Constant 50kHz when Floating)
Integrated Soft-Start and Soft-Off (Patent Pending)
Support Pre-Biased Power-On
Both Channel with 180o Phase Shift
Integrated Boot-Strap Diode
Over-Current Protection
- Sense High Side MOSFET’s RDS(ON)
120% Over-Voltage Protection
50% Under-Voltage Protection
Over-Temperature Protection
Available in SOP-20 Package
Lead Free and Green Devices Available (RoHS Compliant)
三,应用范围 (Applications)
SMPS

四.下载产品资料PDF文档

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！

QQ截图20160419174301.jpg

五,产品封装图 (Package)

六.电路原理图

七,功能概述

Layout Consideration
In any high switching frequency converter, a correct lay-out is important to ensure proper operation of the
regulator. With power devices switching at 200kHz, 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, the MOSFET is car-rying the full load current. During turn-off, current stops flowing in the MOSFET and is free-wheeling 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 interconnecting imped- ances and the magnitude of voltage spike. And signal and power grounds are to be kept separating till com-bined using the ground plane construction or single point grounding. Figure 8. illustrates the layout, with bold lines
Layout Consideration (Cont.)

indicating high current paths; these traces must be short and wide. Components along the bold lines should be

placed lose together. Below is a checklist for your layout:- Keep the switching nodes (UGATE, LGATE, and PHASE)away from sensitive small signal nodes since these nodes are fast moving signals. Therefore, keep traces
to these nodes as short as possible.
- The traces from the gate drivers to the MOSFETs (UGATEand LGATE) should be short and wide.

- Place the source of the high-side MOSFET and the drainof the low-side MOSFET as close as possible. Minimiz-ing the impedance with wide layout plane between the two pads reduces the voltage bounce of the node.

- Decoupling capacitor, compensation component, the resistor dividers, and boot capacitors should be close

their pins. (For example, place the decoupling ceramic capacitor near the drain of the high-side MOSFET as
close as possible. The bulk capacitors are also placed near the drain).
- The input capacitor should be near the drain of the up-per MOSFET; the output capacitor should be near the
loads. The input capacitor GND should be close to the lower MOSFET GND.
- The drain of the MOSFETs (VIN and PHASE nodes)should be a large plane for heat sinking.
- The ROCSET resistance should be placed near the IC as close as possible.
- The decoupling capacitor for VCC should be placed near the VCC and GND. CBOOT should be connected as
close to the BOOT and PHASE pins as possible.

八,相关产品 更多同类产品......

Switching Regulator > Buck Controller
Part_No	Package	Archi tectu	Phase	No.of PWM Output	Output Current (A)	Input Voltage (V)		Reference Voltage (V)	Bias Voltage (V)	Quiescent Current (uA)
Part_No	Package	Archi tectu	Phase	No.of PWM Output	Output Current (A)	min	max	Reference Voltage (V)	Bias Voltage (V)	Quiescent Current (uA)
CXSD6273	SOP-14 QSOP-16 QFN4x4-16	VM	1	1	30	2.9	13.2	0.9	12	8000
CXSD6274	SOP-8	VM	1	1	20	2.9	13.2	0.8	12	5000
CXSD6274C	SOP-8	VM	1	1	20	2.9	13.2	0.8	12	5000
CXSD6275	QFN4x4-24	VM	2	1	60	3.1	13.2	0.6	12	5000
CXSD6276	SOP-8	VM	1	1	20	2.2	13.2	0.8	5~12	2100
CXSD6276A	SOP-8	VM	1	1	20	2.2	13.2	0.8	5~12	2100
CXSD6277/A/B	SOP8\|TSSOP8	VM	1	1	5	5	13.2	1.25\|0.8	5~12	3000
CXSD6278	SOP-8	VM	1	1	10	3.3	5.5	0.8	5	2100
CXSD6279B	SOP-14	VM	1	1	10	5	13.2	0.8	12	2000
CXSD6280	TSSOP-24 \|QFN5x5-32	VM	1	2	20	5	13.2	0.6	5~12	4000
CXSD6281N	SOP14 QSOP16 QFN-16	VM	1	1	30	2.9	13.2	0.9	12	4000
CXSD6282	SOP-14	VM	1	1	30	2.2	13.2	0.6	12	5000
CXSD6282A	SOP-14	VM	1	1	30	2.2	13.2	0.6	12	5000
CXSD6283	SOP-14	VM	1	1	25	2.2	13.2	0.8	12	5000
CXSD6284/A	LQFP7x7 48 TQFN7x7-48	VM	1	6	0.015	1.4	6.5	-	5	1800
CXSD6285	TSSOP-24P	VM	1	2	20	2.97	5.5	0.8	5~12	5000
CXSD6286	SOP-14	VM	1	1	10	5	13.2	0.8	12	3000
CXSD6287	SOP-8-P\|DIP-8	VM	1	1	30	2.9	13.2	1.2	12	3000
CXSD6288	SSOP28 QFN4x4-24	VM	1	2	20	5	24	0.9	5	1200
CXSD6289	SOP-20	VM	1	2	20	2.2	13.2	0.6	5~12	4000
CXSD6290	SOP8\|DFN3x3-10	VM	1	2	-	-	-	-	5~12	550
CXSD6291HC	DIP8\|SOP-8	VM	1	1	1	1.2	9	24	5	9 ~ 24
CXSD6292	SSOP16 QFN4x4-16 TQFN3x3-16	VM	1	1	25	3	25	0.6	5	1700
CXSD6293	TDFN3x3-10	COT	1	1	25	3	25	0.5	5	350
CXSD6294	QFN4x4-24	CM	2	1	40	4.5	13.2	0.6	5~12	4000
CXSD6295	SOP8P TDFN3x3-10	VM	1	1	20	3	13.2	0.8	5~12	2500
CXSD6296A\|B\|C\|D	SOP8P	VM	1	1	25	3	13.2	0.6\|0.8	5~12	1200
CXSD6297	TDFN3x3-10	VM	1	1	25	4	13.2	0.8	5~12	2000
CXSD6298	TDFN3x3-10	COT	1	1	25	4.5	25	0.6	5~12	80
CXSD6299\|A	SOP-8P	VM	1	1	25	4.5	13.2	0.8	5~12	16000
CXSD62100	TQFN3x3-10	VM	1	1	25	4.5	13.2	0.6	5~12	2500
CXSD62101\|L	TDFN3x3-10	COT	1	1	30	3	25	0.8	5~12	2000
CXSD62102	TQFN3x3-16	COT	1	1	30	1.8	28	0.6	5	600
CXSD62102A	TQFN 3x3 16	COT	1	1	30	1.8	28	0.6	5	600
CXSD62103	QFN4x4-24	VM	2	1	50	4.5	13.2	0.6	5~12	5000
CXSD62104	TQFN4x4-24	COT	1	2	15	6	25	2	N	550
CXSD62105	TQFN4x4-24	COT	1	2	15	6	25	2	N	550
CXSD62106\|A	TQFN4x4-4 TQFN3x3-20	COT	1	2	20	3	28	0.75	5	800
CXSD62107	TQFN3x3-16	COT	1	1	20	1.8	28	0.75	5	400
CXSD62108	QFN3.5x3.5-14 TQFN3x3-16	COT	1	1	20	1.8	28	0.75	5	400
CXSD62109	TQFN3x3-16	COT	1	2	20	1.8	28	0.75	5	400
CXSD62110	QFN3x3-20 TQFN3x3-16	COT	1	2	20	3	28	1.8\|1.5\|0.5	5	740
CXSD62111	TQFN4x4-24 \|QFN3x3-20	CM	1	2	15	5	28	0.5	N	3000
CXSD62112	TDFN3x3-10	COT	1	1	20	1.8	28	0.5	5	250
CXSD62113\|C	TQFN3x3-20	COT	1	2	15	6	25	2	N	550
CXSD62113E	TQFN 3x3 20	COT	2	2	11	6	25	2	N	550
CXSD62114	TQFN3x3-20	COT	2	2	11	5.5	25	2	N	280
CXSD62115	QFN4x4-24	VM	2	1	60	3.1	13.2	0.85	12	5000
CXSD62116A\|B\|C	SOP-8P	VM	1	1	20	2.9	13.2	0.8	12	16000
CXSD62117	SOP-20	VM	2	2	30	10	13.2	1	12	5000
CXSD62118	TDFN3x3-10	COT	1	1	25	1.8	28	0.7	5	250
CXSD62119	TQFN3x3-20	COT	2	1	40	1.8	25	REFIN Setting	5	700
CXSD62120	QFN 3x3 20 TQFN 3x3 16	COT	1	2	20	3	28	1.8\|1.5 1.35\|1.2 0.5	5	800
CXSD62121A	TQFN3x3 20	COT	1	2	15	3	28	0.75	5	220
CXSD62121B	TQFN3x3 20	COT	1	2	15	3	28	0.75	5	220
CXSD62121	TQFN3x3-20	COT	1	2	20	3	28	0.75	5	180

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CXSD62117双通道电压模式和同步PWM控制器驱动双N通道mosfet两个通道均采用180度相移

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