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NCV1034

更新时间： 2024-11-19 01:22:15
品牌 Logo 应用领域
安森美 - ONSEMI /
页数 文件大小 规格书
24页 259K
描述
100V Synchronous PWM Buck Controller

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NCV1034 数据手册

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NCV1034  
100V Synchronous PWM  
Buck Controller  
Description  
The NCV1034 is a high voltage PWM controller designed for high  
performance synchronous Buck DC/DC applications with input voltages  
up to 100 V. The NCV1034 drives a pair of external N−MOSFETs. The  
switching frequency is programmable from 25 kHz up to 500 kHz  
allowing the flexibility to tune for efficiency and size. A synchronization  
feature allows the switching frequency to be set by an external source or  
output a synchronization signal to multiple NCV1034 controllers. The  
output voltage can be precisely regulated using the internally trimmed  
1.25 V reference voltage for low voltage applications. Protection features  
include user programmable undervoltage lockout and hiccup current limit.  
www.onsemi.com  
MARKING  
DIAGRAM  
SOIC−16  
D SUFFIX  
CASE 751B  
NCV1034D  
AWLYWWG  
A
WL  
Y
= Assembly Location  
= Wafer Lot  
= Year  
Features  
WW  
G
= Work Week  
= Pb−Free Package  
• High Voltage Operating up to 100 V  
• Programmable Switching Frequency up to 500 kHz  
• 2 A Output Drive Capability  
PIN CONNECTIONS  
• Precision Reference Voltage (1.25 V)  
• Programmable Soft−Start with Prebiased Load Capability  
• Programmable Overcurrent and Undervoltage Protection  
OCset  
FB  
1
UVLO  
RT  
16  
15  
14  
13  
12  
11  
10  
9
2
3
4
5
6
• Hiccup Current Limit Using MOSFET R  
• External Frequency Synchronization  
Sensing  
Comp  
SS/SD  
SYNC  
PGND  
LDRV  
DRVCC  
GND  
OCIN  
VCC  
VS  
DS(on)  
• NCV Prefix for Automotive and Other Applications Requiring  
Unique Site and Control Change Requirements; AEC−Q100  
Qualified and PPAP Capable  
HDRV  
VB  
7
8
• These Devices are Pb−Free and are RoHS Compliant  
Applications  
(Top View)  
• 48 V Non−Isolated DC−DC Converter  
• Embedded Telecom Systems  
• Networking and Computing Voltage Regulator  
• Distributed Point of Load Power Architectures  
• General High Voltage DC−DC Converters  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 23 of this data sheet.  
V
: 48 V  
IN  
V
: 12 V  
D1  
CC  
C1A  
C1B  
R4  
110k  
2u2  
1N4148  
2u2  
C4  
C2  
C3  
8
9
GND  
100n  
100n 100n  
DRVVCC VB  
Q1  
12  
5
10  
11  
13  
7
VCC  
SYNC  
RT  
HDRV  
VS  
NTD3055  
L1  
V
R10  
10k  
GND GND  
GND  
OUT  
5 V @ 5 A, 200 kHz  
R8  
10k  
15  
4
OCIN  
LDRV  
PGND  
FB  
13  
ꢀ
C9  
47  
C9B C9C  
47 47  
R9  
Q2  
SS/SD  
UVLO  
1k2  
ꢀ
ꢀ
ꢀ
NTD24N06  
R1  
16  
1
6
16k9  
C8  
2
OCSET  
GND  
14  
3
1n8  
COMP  
C5  
R6  
220n  
C6  
R5  
3k9  
R7  
11k  
IC1  
NCP1034  
20k  
12n  
R3  
4k7  
R2  
5k6  
C7  
330p  
GND GND GND GND GND  
GND  
Figure 1. Typical Application Circuit  
1
© Semiconductor Components Industries, LLC, 2017  
Publication Order Number:  
April, 2017 − Rev. 0  
NCV1034/D  
1234567...24

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