参数资料
型号: LT3751IFE#TRPBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20
封装: 4.40 MM, LEAD FREE, PLASTIC, TSSOP-20
文件页数: 22/34页
文件大小: 403K
代理商: LT3751IFE#TRPBF
LT3751
29
3751fb
Isolated 282V Voltage Regulator
TYPICAL APPLICATIONS
DONE
FAULT
UVLO1
OVLO1
UVLO2
OVLO2
VCC
CHARGE
CLAMP
RDCM
RVOUT
VIN
GND
OC
OPTO
VCC
COMP
FB
HVGATE
LVGATE
FB
CSP
CSN
RVTRANS
T1
D5
VOUT
282V
225mA
VTRANS
VCC
3751 TA06a
LT3751
GND RBG
R3
210k
OFF ON
C3
22μF
2
C1
100pF
C4
1μF
2
C2
1μF
R7
475Ω
R4
105k
R5
210k
M2
R6
40mΩ
R18
1k
R8
2.49k
R17
221k
R16
249k
4.7nF
Y RATED
R1
49.9k
D1
D6
U2
LT4430
VTRANS
VCC
R10, 4.3M
R9, 2.7M
R2, 10Ω
ISOLATION BOUNDARY
Npb
Np
Ns
Nsb
R12, 442k
R11, 84.5k
C1, C8: 16V COG CERAMIC
C2: 16V X5R OR X74 CERAMIC
C3: 350V ELECTROLYTIC
C4: 250V X5R OR X7R CERAMIC
C5, C6, C11, C12: 630V X5R OR X7R CERAMIC
C7: 350V ELECTROLYTIC
C9, C10: 25V X5R OR X7R CERAMIC
F1: 250V, 2A FUSE
R1: 2010 RESISTOR, 1%
R2, R3, R6, R16, R17: 1206 RESISTORS, 1%
R4, R5: TWO 1206 RESISTORS IN SERIES, 1%
R7 THRU R12, R15 THRU R20: 0805 RESISTORS, 1%
D1: 12V ZENER
D2: VISHAY MURS140
D3: VISHAY P6KE200A
D4: VISHAY MURS160
D5: STMICROELECTRONICS STTH112A
D6: VISHAY BAT54
D7: NXP SEMICONDUCTORS BAS516
M1: VISHAY IRF830
M2: STMICROELECTRONICS STB11NM60FD
T1: TDK SRW24LQ
(Np:Ns:Npb:Nsb = 1:2:0.08:0.08)
U1: NEC PS2801-1
U2: LINEAR TECHNOLOGY LT4430
TO
MICRO
VTRANS
100V TO
200VDC
F1, 2A
C5
0.01μF
DANGER HIGH VOLTAGE! OPERATION BY HIGH VOLTAGE TRAINED PERSONNEL ONLY
D4
D3
M1
C9
3.3μF
C8
22nF
R19
3.16k
C10
0.47μF
R15
5.11Ω
D7
U1
D2
R20
274Ω
C6
0.1μF
+
C7
400μF
IOUT (mA)
0
–0.50
OUTPUT
VOLTAGE
ERROR
(V)
0
50
100
200
150
0.50
–0.25
0.25
250
3751 TA06b
100
EFFICIENCY
(%)
100
95
90
85
80
75
70
180
140
3751 TA06c
200
160
INPUT VOLTAGE (V)
120
63W OUTPUT
48W OUTPUT
25W OUTPUT
20μs/DIV
3751 TA06d
IPRIMARY
2A/DIV
VDRAIN
100V/DIV
20μs/DIV
3751 TA06e
IPRIMARY
2A/DIV
VDRAIN
100V/DIV
Load Regulation
Efciency
Steady-State Operation with
225mA Load Current
Steady-State Operation with
7.1mA Load Current
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