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ROHM BM2P129TF | Demoboard BM2P129TF-EVK-002
AC/DC Converter Non-Isolation Buck Converter PWM method Output 2W -12V
Overview
| Topology | Buck Converter |
| Input voltage | 90-264 V |
| Output 1 | 10.8 V / 0.17 A |
| IC revision | 001 |
Description
The BM2P129TF-EVK-001 evaluation board outputs 12V voltage from the input of 90Vac to 264Vac. The output current supplies up to 0.167A. BM2P109TF which is PWM method DC/DC converter IC built-in 650V MOSFET is used. The BM2P129TF contributes to low power consumption by built-in a 650 V starting circuit. Built-in current detection resistor realizes compact power supply design. Current mode control imposes current limitation on every cycle, providing superior performance in bandwidth and transient response. The switching frequency is 100 kHz in fixed mode. At light load, frequency is reduced and high efficiency is realized. Built-in frequency hopping function contributes to low EMI. Low on-resistance 9.5 Ω 650 V MOSFET built-in contributes to low power consumption and easy design. The flywheel diode is a fast recovery diode of 1A/650 V RFN1LAM6S, contributing to low power consumption.
Features
- PWM frequency: 100kHz
- PWM current mode method
- Frequency hopping function
- Burst operation at light load
- Built-in 650V/800V start circuit
- Built-in 650V/800V switching MOSFET
- VCC pin under voltage protection
- VCC pin over voltage protection
- Over current limiter function per cycle
- Soft start function
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | VR(V (AC)) | Safety Class | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | Pitch(mm) | L(mm) | W(mm) | H(mm) | Packaging | L(µH) | IR(A) | ISAT(A) | RDC max.(mΩ) | fres(MHz) | Mount | Endurance(h) | IRIPPLE(mA) | ILeak(µA) | DF(%) | Ø D(mm) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WCAP-FTXX Film Capacitors, Across the mains, 100 nF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTXX Film Capacitors | Capacitance100 nF | Rated Voltage310 V (AC) | Safety ClassX2 | Rate of Voltage Rise300 V/µs | Dissipation Factor0.1 % | Insulation Resistance30 GΩ | Pitch15 mm | Length18 mm | Width6 mm | Height12 mm | PackagingCarton | – | – | – | – | – | MountBoxed THT | – | – | – | – | – | ||||
 | WE-TIS Radial Leaded Wire Wound Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TIS Radial Leaded Wire Wound Inductor | – | – | – | – | – | – | – | Length11 mm | Width11 mm | Height11.5 mm | – | Inductance220 µH | Rated Current1 A | Saturation Current1.4 A | DC Resistance510 mΩ | Self Resonant Frequency2.6 MHz | MountTHT | – | – | – | – | – | ||||
 | WCAP-ATLI Aluminum Electrolytic Capacitors, –, 220 µF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATLI Aluminum Electrolytic Capacitors | Capacitance220 µF | Rated Voltage25 V (AC) | – | – | – | – | Pitch3.5 mm | Length11.5 mm | – | – | PackagingAmmopack | – | – | – | – | – | – | Endurance 3000 | Ripple Current750 mA | Leakage Current55 µA | Dissipation Factor10 % | Diameter8 mm |