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Overview
| Topology | Other Topology |
| Input voltage | 37-57 V |
| Output 1 | 20 V / 3 A |
Description
The NCP12700 is a fixed frequency, peak current mode, PWM controller containing all of the features necessary for implementing single-ended power converter topologies. The device features a high voltage startup capable of operating over a wide input range (9 – 120/200 V MSOP10/WQFN10) and supplying at least 20 mA to provide temporary bias to VCC during system startup. The controller offers an adjustable soft-start, input voltage UVLO protection, and an adjustable Over-Power Protection circuit which limits the total power capability of the circuit as the input voltage increases, easing the system thermal design. The UVLO pin also features a shutdown comparator which allows for an external signal to disable switching and bring the controller into a low quiescent state.
Features
- Wide Input Range (9 – 120/200 V; MSOP10/WQFN10)
- Current Mode Control with Integrated Slope Compensation
- Single Resistor Programmable Oscillator
- 1 A / 2.8 A Source / Sink Gate Driver
- Input Voltage UVLO with Hysteresis
- Several Fault Protections:
- User Adjustable Over-Power Protection
- Overload Protection with 30 ms Overload Timer
- NTC-Compatible Fault Interface for Thermal Protection
- Output OVP Fault Interface
Typical applications
- Low to medium voltage isolated DC-DC, CCM & DCM Flyback Converters, Forward converters
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 16 V(DC), 4.7 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 16 V(DC) | Capacitance4.7 nF | Capacitance±10% | Rated Voltage16 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | |||||
 | WE-HCI SMT Flat Wire High Current Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | – | – | – | Size7050 | Operating Temperature -40 °C up to +150 °C | – | – | – | Length7 mm | Width6.9 mm | Height4.8 mm | – | – | Inductance0.47 µH | Performance Rated Current31.9 A | Saturation Current @ 10%9 A | Saturation Current @ 30%20 A | DC Resistance1.35 mΩ | Self Resonant Frequency235 MHz | MaterialSuperflux | ||||
750318890 | Flyback Transformer, –, – | Simulation– | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Flyback Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |