NCP1071: High-Voltage Switcher for Low Power Offline SMPS
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The NCP1071 integrate a fixed frequency current mode controller with a 700 V MOSFET. Available in a PDIP−7 or SOT−223 package, the NCP1071 offers a high level of integration, including soft−start, frequency−jittering, short−circuit protection, skip−cycle, a maximum peak current set point, ramp compensation, and a Dynamic Self−Supply (eliminating the need for an auxiliary winding).
Unlike other monolithic solutions, the NCP1071 is quiet by nature: during nominal load operation, the part switches at one of the available frequencies (65, 100 or 130 kHz). When the output power demand diminishes, the IC automatically enters frequency foldback mode and provides excellent efficiency at light loads. When the power demand reduces further, it enters into a skip mode to reduce the standby consumption down to a no load condition.
Protection features include: a timer to detect an overload or a short−circuit event, Overvoltage Protection with auto−recovery and AC input line voltage detection.
For improved standby performance, the connection of an auxiliary winding stops the DSS operation and helps to reduce input power consumption below 50 mW at high line.
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Applications | End Products | |
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Technical Documentation & Design Resources
Design Notes (1) | Package Drawings (2) |
Tutorials (2) | Videos (1) |
Simulation Models (1) | Evaluation Board Documents (4) |
Data Sheets (1) | UsersManual (1) |
Evaluation/Development Tool Information
Product | Status | Compliance | Short Description | Action | |
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NCP1071SOTGEVB | Active |
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6 W / 12 V NON-ISOLATED POWER SUPPLY |
Availability & Samples
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Specifications
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Case Outline |
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NCP1071P065G | Active |
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NCP1071 | PDIP-7 | 626A-01 | NA | Tube | 50 | $0.4673
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NCP1071P100G | Active |
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NCP1071 | PDIP-7 | 626A-01 | NA | Tube | 50 | $0.4673
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NCP1071P130G | Active |
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NCP1071 | PDIP-7 | 626A-01 | NA | Tube | 50 | $0.4673
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NCP1071STAT3G | Active |
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NCP1071 | SOT-223-4 / TO-261-4D | 0.0318 | 1 | 260 | Tape and Reel | 4000 | $0.4673
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NCP1071STBT3G | Active |
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NCP1071 | SOT-223-4 / TO-261-4D | 0.0318 | 1 | 260 | Tape and Reel | 4000 | $0.4673
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NCP1071STCT3G | Active |
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NCP1071 | SOT-223-4 / TO-261-4D | 0.0318 | 1 | 260 | Tape and Reel | 4000 | $0.4673
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Market Leadtime (weeks) | : | 4 to 8 |
Market Leadtime (weeks) | : | 4 to 8 |
Market Leadtime (weeks) | : | Contact Factory |
Market Leadtime (weeks) | : | 8 to 12 |
Market Leadtime (weeks) | : | 8 to 12 |
Market Leadtime (weeks) | : | Contact Factory |
Product
Description
Pricing ($/Unit)
Compliance
Status
Control Mode
fsw Typ (kHz)
fJitter Typ (%)
Stand-by Mode
RDS(ON) Typ (Ω)
V(BR)DSS Max (V)
IPeak (mA)
HV Start-up Min (V)
DSS (mA)
UVLO
Short Circuit Protection
Over Power Compensation
Brown-out
Latch
Package Type
NCP1071P065G
$0.4673
Pb
A
H
P
Active
Current Mode
65
6
Yes
22
700
350
Yes
8
6.4
Yes
No
No
No
PDIP-7
NCP1071P100G
$0.4673
Pb
A
H
P
Active
Current Mode
100
6
Yes
22
700
350
Yes
8
6.4
Yes
No
No
No
PDIP-7
NCP1071P130G
$0.4673
Pb
A
H
P
Active
Current Mode
130
6
Yes
22
700
350
Yes
8
6.4
Yes
No
No
No
PDIP-7
NCP1071STAT3G
$0.4673
Pb
A
H
P
Active
Current Mode
65
6
Yes
22
700
350
Yes
8
6.4
Yes
No
No
No
SOT-223-4 / TO-261-4D
NCP1071STBT3G
$0.4673
Pb
A
H
P
Active
Current Mode
100
6
Yes
22
700
350
Yes
8
6.4
Yes
No
No
No
SOT-223-4 / TO-261-4D
NCP1071STCT3G
$0.4673
Pb
A
H
P
Active
Current Mode
130
6
Yes
22
700
350
Yes
8
6.4
Yes
No
No
No
SOT-223-4 / TO-261-4D
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