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LTC7050-1

更新时间： 2024-01-22 06:54:51
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
16页 1784K
描述
Dual SilentMOS Smart Power Stage in 5mm × 8mm LQFN

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中文翻译

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LTC7050-1 数据手册

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LTC7050  
Dual SilentMOS Smart Power  
Stage in 5mm × 8mm LQFN  
FEATURES  
DESCRIPTION  
The LTC®7050 dual monolithic power stage fully inte-  
grates high speed drivers with low resistance half-bridge  
power switches plus comprehensive monitoring and  
protection circuitry in an electrically and thermally opti-  
mized package. With a suitable high frequency control-  
ler, this power stage forms a compact, high current volt-  
age regulator system with state-of-the-art efficiency and  
transient response.  
n
70A Peak Output Current per Channel  
n
SilentMOS™ Smart Power Stage  
Utilizes Low EMI/EMC Silent Switcher®2  
n
Architecture  
n
Ultra-low SW-Voltage Overshoot  
Frequency Up to 2MHz  
n
n
V Up to 14V  
IN  
n
n
n
n
n
n
n
n
Up to 94% Efficiency at 1MHz with 1.8V  
Integrated Boost Diodes and Capacitors  
Accurate Switch Current Monitoring  
Power MOSFET Overcurrent Protection  
Input Overvoltage and Bias Undervoltage Protection  
Thermal Monitor with Overtemperature Flag  
3.3V/5V Compatible Tri-State PWM Input  
5mm × 8mm LQFN Package  
OUT  
SilentMOS technology utilizes second generation Silent  
Switcher 2 architecture reducing both EMI and switch-  
node voltage overshoot while maximizing efficiency at  
high switching frequencies.  
High speed current sensing provides low latency switch  
current information, enabling tight current balancing and  
immediate overcurrent protection.  
APPLICATIONS  
Thermally-enhanced packaging provides dual 40A rated  
continuous output current capability.  
All registered trademarks and trademarks are the property of their respective owners. Protected  
by U.S. patents, including 9525351.  
n
High Current Servers and Workstations  
n
Networking/Telecom Microprocessor Supplies  
n
Small Form-Factor POL Converter  
TYPICAL APPLICATION  
Efficiency vs IOUT at 1MHz  
95  
90  
85  
80  
75  
70  
65  
12  
10  
8
12VIN, 1V/70AOUT 1MHz Dual-Phase POL Converter  
EFFICIENCY  
V
IN  
4.5V TO 14V  
10Ω  
10µF  
V
6
CC  
PV  
CC  
5V  
8k  
V
V
INSNS  
CC  
POWER LOSS  
V
V
PV  
PV  
47pF  
1µF  
FREQ  
FB2  
CC  
CC  
CC  
CC  
4
2.61k  
50k  
10k  
LTC3861  
I
10µF  
×10  
LIM2  
2
33.2Ω  
V
IN  
INDUCTOR LOSS INCLUDED  
L = L = VLBU9664100LT-R18L  
1 2  
I
SNS1N  
V
SNSOUT1  
SNSP1  
LTC7050  
8k  
0
I
I
SNS1  
SNS1P  
RUN1  
0
10  
20  
30  
40  
50  
60  
70  
V
OUT  
V
RUN1,2  
PWM1  
PWM2  
FLTB1,2  
LOAD CURRENT (A)  
180nH  
12k  
7050 TA01b  
PWM1  
PWM2  
RUN2  
SW1  
SW2  
V
V
OUT  
SNSN1  
3.3nF  
280Ω  
10k  
1V  
180nH  
VSW Waveform at 1MHz  
70A  
330µF  
×3  
FB1  
100pF  
5.9k  
I
I
SNS2P  
SNS2  
12.5V  
COMP1, 2  
33.2Ω  
100µF  
×2  
I
SNS2N  
4.7nF  
SGND PGND  
7050 TA01a  
I
LIM1  
V
59k  
SW1  
I
AVG  
SGND  
1k  
0.1µF  
2V/DIV  
SS1, 2  
PINS NOT SHOWN IN LTC3861 CIRCUIT:  
CLKIN, CONFIG, VSNSN2, VSNSOUT2,  
VSNSP2, CLKOUT, PHSMD, PGOOD1,  
PGOOD2, PWMEN1, PWMEN2  
100pF  
PINS NOT SHOWN IN LTC7050 CIRCUIT:  
TDIO, TMON/FLT  
0.1µF  
V
OUT  
= 12V  
IN  
I
= 60A  
7050 TA01c  
5ns/DIV  
Rev. 0  
1
Document Feedback  
For more information www.analog.com  
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