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LTC3884 Datasheet(PDF) 8 Page - Analog Devices

Part # LTC3884
Description  Quad Output PolyPhase Step-Down DC/DC Voltage Mode Controller with Digital Power System Management
PDF  26 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC3884 Datasheet(HTML) 8 Page - Analog Devices

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LTC7883
8
Rev. 0
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency and Power Loss vs
Input Voltage
(1-Phase Using LTC4449)
3-Phase Transient Response
(Using D12S1R860A Power Block)
1-Phase Single Cycle Response
(Using D12S1R860A Power Block
with COUT = 6 × 100µF X5R 1210)
3+1 Channel Crosstalk
(Using D12S1R845A Power
Blocks)
Load Step Transient Response
Using AVP
Line Step Transient Response
(1-Phase Using LTC4449)
VIN (V)
5
100
98
96
94
92
90
88
86
84
82
80
3.0
2.0
1.0
2.5
1.5
0.5
0
20
10
25
15
7883 G13
30
VO = 1.8V
POWER FET: BSC050N04LS G
SYNC FET: BSC010N04LS
VOUT0
(1-PHASE)
20mV/DIV
VOUT1
(3-PHASE)
20mV/DIV
IOUT1
10A/DIV
100µs/DIV
7883 G16
25%
LOAD STEP
VOUT
50mV/DIV
IO
10A/DIV
200µs/DIV
7883 G17
VOUT
10mV/DIV
VIN
2V/DIV
7V
1.8V
200µs/DIV
7883 G18
100µs/DIV
VOUT
(10mV/DIV)
IOUT
(10A/DIV)
7883 G14
VOUT = 0.9V/90A
VIN = 12V
SYNC = 500kHz
L = 210nH
25mVP-P
2µs/DIV
IOUT
(10A/DIV)
VSW
(10V/DIV)
VOUT
(20mV/DIV)
7883 G15
VOUT = 1V/25A
VIN = 12V
SYNC = 1MHz
L = 210nH
3-Phase DC Output Current
Sharing (Using D12S1R845A
Power Block
Load Step Transient Current
Sharing (Using FDMF6707B
DrMOS)
Load Dump Transient Current
Sharing (Using FDMF6707B
DrMOS)
TOTAL RAIL CURRENT (A)
0
20
2
18
14
10
6
16
12
8
4
0
60
70
7883 G10
80
50
20
40
10
30
CHANNEL 1
CHANNEL 2
CHANNEL 3
IL1, IL2
10A/DIV
VOUT
20mV/DIV
IOUT
20A/DIV
5µs/DIV
VOUT = 1V
VIN = 12V
SYNC = 500kHz
L = 320nH
7883 G11
IL1, IL2
10A/DIV
VOUT
20mV/DIV
IOUT
20A/DIV
5µs/DIV
VOUT = 1V
VIN = 12V
SYNC = 500kHz
L = 320nH
7883 G12



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