NCP1072: High Voltage Switching Regulator for Offline SMPS
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The NCP1072 / NCP1075 products integrate a fixed frequency current mode controller with a 700 V MOSFET. Available in a PDIP-7 or SOT-223 package, the NCP1072/5 offer 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 NCP1072/5 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.
Unlike other monolithic solutions, the NCP1072/5 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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Technical Documentation & Design Resources
| Design & Development Tools (1) | Data Sheets (1) |
| Design Notes (3) | Package Drawings (2) |
| Tutorials (2) | Videos (1) |
| Simulation Models (2) | Evaluation Board Documents (4) |
Evaluation/Development Tool Information
| Product | Status | Compliance | Short Description | Action | |
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| NCP1072DIPGEVB | Active |
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6 W SMPS Evaluation Board |
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Availability & Samples
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Specifications
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Application Diagram
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Case Outline |
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| NCP1072P065G | Active |
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NCP1072 | PDIP-7 | 626A-01 | NA | Tube | 50 | $0.5699 | |||||||||
| NCP1072P100BG | Active |
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NCP1072 | PDIP-7 | 626A-01 | NA | Tube | 50 | $0.4933
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| NCP1072P100G | Active |
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NCP1072 | PDIP-7 | 626A-01 | NA | Tube | 50 | $0.518 | |||||||||
| NCP1072STAT3G | Active |
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NCP1072 | SOT-223-4 / TO-261-4D | 0.0318 | 1 | 260 | Tape and Reel | 4000 | $0.5427
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| NCP1072STBT3G | Active |
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NCP1072 | SOT-223-4 / TO-261-4D | 0.0318 | 1 | 260 | Tape and Reel | 4000 | $0.5427
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| Market Leadtime (weeks) | : | 2 to 4 |
| ON Semiconductor (2020-09-02 00:00) | : | 11,050 |
| Market Leadtime (weeks) | : | 17 to 20 |
| Market Leadtime (weeks) | : | 2 to 4 |
| Market Leadtime (weeks) | : | 8 to 12 |
| Market Leadtime (weeks) | : | Contact Factory |
Product
Description
Pricing ($/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
NCP1072P065G
$0.5699
Pb
A
H
P
Active
Current Mode
65
Yes
Yes
11
700
250
Yes
8
6.4
Yes
No
No
No
PDIP-7
NCP1072P100BG
$0.4933
Pb
A
H
P
Active
Current Mode
100
Yes
Yes
11
700
250
Yes
8
6.4
Yes
No
No
No
PDIP-7
NCP1072P100G
$0.518
Pb
A
H
P
Active
Current Mode
100
Yes
Yes
11
700
250
Yes
8
6.4
Yes
No
No
No
PDIP-7
NCP1072STAT3G
$0.5427
Pb
A
H
P
Active
Current Mode
65
Yes
Yes
11
700
250
Yes
8
6.4
Yes
No
No
No
SOT-223-4 / TO-261-4D
NCP1072STBT3G
$0.5427
Pb
A
H
P
Active
Current Mode
100
Yes
Yes
11
700
250
Yes
8
6.4
Yes
No
No
No
SOT-223-4 / TO-261-4D
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