LTC4440A-5 Просмотр технического описания (PDF) - Linear Technology
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производитель
LTC4440A-5 Datasheet PDF : 12 Pages
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LTC4440A-5
Typical Application
240W 42V-56VIN to Unregulated 12V Half-Bridge Converter
VIN
48VIN
–VIN
L1
0.56µH
1µF
100V
VIN
1µF
100V
11V
D1
1
3
VCC
6
A
INP BOOST
LTC4440A-5 5
TG
GND TS
2 4 0.22µF
B
Si7852DP
×2
Si7852DP
×2
1µF
100V
1µF
100V
2
1µF
100V T2
70(980µH):1 4
CS+
18
3
1µF
100V
3
7
5
12V
C3 +
L3
1mH
68µF
D2
1
D3
6
VE
7
9
L2 0.22µH
VF
11
1500pF
100V
20Ω 1W
VOUT
+ C2
180µF
16V
Si7370DP
×2
Si7370DP
×2
C1
2.2nF
250V
T1
5:4:4:2:2
VF
4.7k
1/4W
10k 3k
VE
4.7k
1/4W
10k 3k
–VOUT
VOUT
1µF
–VOUT
VIN 12V
11V
MMBT3904
15k
1/4W
215k
120Ω
5
15
A
6
DRVA
4
DRVB
VCC
LTC3723EGN-2
UVLO
DPRG VREF RAMP CT SPRG GND CS SS
2
SDRB
SDRA 3
11
COMP
FB
T3
1(1.5mH):0.5
1
4
0.1µF
22Ω
8
100Ω
5
0.22µF B CS+
11
CSF+
9 SYNC
220pF
12 14 15 6
5 2 3 16
CSF– MF MF2 CSE+ CSE– ME ME2 VCC
LTC3901EGN
1
PVCC
GND PGND GND2 PGND2
8
4
10 13
TIMER
7
330pF
33.2k
100Ω
VOUT
MMBT3904
1µF
1µF
–VOUT
1k
10V
MMBZ5240B
4440A5 TA04
30.1k
100pF
1µF
1µF
330pF
12 1 9 8
62k 150pF
0.47µF
16 7
10k
10 14 13
1k
470pF
0.47µF
2N7002
4.7k
D4 D5
7.5Ω 7.5Ω
1µF, 100V TDK C4532X7R2A105M
C1: MURATA DE2E3KH222MB3B
C2: SANYO 16SP180M
C3: AVX TPSE686M020R0150
D1-D3: BAS21
L1: COILCRAFT DO1813P-561HC
L2: SUMIDA CDEP105-0R2NC-50
L3: COILCRAFT DO1608C-105
T1: PULSE PA0801.005
T2: PULSE P8207
D4, D5: MMBD914
T3: PULSE PA0785
12V
MMBZ5242B
Related Parts
PART NUMBER
DESCRIPTION
LTC4444/LTC4444-5 High Voltage Synchronous N-Channel MOSFET Driver with
Shoot-Through Protection
LTC4446
High Voltage Synchronous N-Channel MOSFET Driver
without Shoot-Through Protection
LTC4441/LTC4441-1 N-Channel MOSFET Gate Driver
LTC3900
Synchronous Rectifier Driver for Forward Converters
LTC3901
Synchronous Rectifier Driver for Push-Pull and Full-Bridge
Converters
LTC3722-1/LTC3722-2 Synchronous Dual Mode Phase Modulated Full-Bridge
Controllers
LTC3723-1/LTC3723-2 Synchronous Push-Pull PWM Controllers
LTC3765/LTC3766 Isolated Synchronous Forward Controller Chip Set
LT1952/LT1952-1
Synchronous Forward Active Clamp Controllers
COMMENTS
Up to 100V Supply Voltage, 7.2V ≤ VCC ≤ 13.5V, 3A Peak
Pull-Up/0.55Ω Peak Pull-Down
Up to 100V Supply Voltage, 7.2V ≤ VCC ≤ 13.5V, 3A Peak
Pull-Up/0.55Ω Peak Pull-Down
Up to 25V Supply Voltage, 5V ≤ VCC ≤ 25V, 6A Peak Output Current
Programmable Time Out, Reverse Inductor Current Sense
Programmable Time Out, Reverse Inductor Current Sense
Adaptive Zero Voltage Switching, High Output Power Levels (Up to
Kilowatts)
Current Mode or Voltage Mode Controllers
Active Clamp Reset, Direct Flux Limit™ with Onboard Gate Drivers
Ideal for Medium Power 24V and 48V Input Applications
Ideal for Medium Power 24V and 48V Input Applications
12 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 9F5o0r3m5o-7re4i1n7formation www.linear.com/LTC4440A-5
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com/LTC4440A-5
4440a5f
LT 0913 • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2013
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