65-VIN PSR flyback converter with 100-V, 1.5-A integrated power MOSFET
Product details
Parameters
Package | Pins | Size
Features
- Designed for reliable and rugged applications
- Wide input voltage range of 4.5 V to 65 V with operation down to 3.5 V after start-up
- Robust solution with only one component crossing the isolation barrier
- ±1.5% total output regulation accuracy
- Optional VOUT temperature compensation
- 6-ms internal or programmable soft start
- Input UVLO and thermal shutdown protection
- Hiccup-mode overcurrent fault protection
- –40°C to +150°C junction temperature range
- Integration reduces solution size and cost
- Integrated 100-V, 0.4-Ω power MOSFET
- No opto-coupler or transformer auxiliary winding required for VOUT regulation
- Internal loop compensation
- High-efficiency PSR flyback operation
- Quasi-resonant MOSFET turn-off in BCM
- Low input quiescent current
- External bias option for improved efficiency
- Single- and multi-output implementations
- Ultra-low conducted and radiated EMI signatures
- Soft switching avoids diode reverse recovery
- Optimized for CISPR 32 EMI requirements
- Create a custom regulator design using WEBENCH® Power Designer
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Description
The LM5180 is a primary-side regulated (PSR) flyback converter with high efficiency over a wide input voltage range of 4.5 V to 65 V. The isolated output voltage is sampled from the primary-side flyback voltage, eliminating the need for an optocoupler, voltage reference, or third winding from the transformer for output voltage regulation.
The high level of integration results in a simple, reliable and high-density design with only one component crossing the isolation barrier. Boundary conduction mode (BCM) switching enables a compact magnetic solution and better than ±1.5% load and line regulation performance. An integrated 100-V power MOSFET provides output power up to 7 W with enhanced headroom for line transients.
The LM5180 flyback converter is available in a 8-pin, 4-mm × 4-mm, thermally-enhanced WSON package with 0.8-mm pin pitch.
The LM5180 flyback converter simplifies implementation of isolated DC/DC supplies with optional features to optimize performance for the target end equipment. The output voltage is set by one resistor, while an optional resistor improves output voltage accuracy by negating the thermal coefficient of the flyback diode voltage drop. Additional features include an internally-fixed or externally-programmable soft start, optional bias supply connection for higher efficiency, precision enable input with hysteresis for adjustable line UVLO, hiccup-mode overload protection, and thermal shutdown protection with automatic recovery.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- 10-V to 65-V input voltage range
- 15-V and -7.7-V output voltages
- Rated for up to 200 mA of load current
- Resistor divider to EN/UVLO to faciltate programmable input voltage UVLO
- Fully assembled, tested and proven PCB layout with small footprint
Description
Features
- 10-V to 65-V input voltage range
- 5-V output voltage with 1% setpoint accuracy
- Rated for up to 1 A of load current
- Resistor divider to EN/UVLO to faciltate programmable input voltage UVLO
- Fully assembled, tested and proven PCB layout with small footprint
Design tools & simulation
Features
- Select transformer parameters including turns ratio and mag inductance
- Determine input and output capacitances for specified ripple requirements (1% Vout and 5% Vin)
- Select components for feedback, soft-start, input UVLO, and temperature compensation
- Advise components (usually optional) for SW voltage (...)
Reference designs
Design files
-
download TIDA-010081 BOM Files.zip (164KB) -
download TIDA-010081 Assembly Drawing.pdf (308KB) -
download TIDA-010081 PCB.pdf (972KB) -
download TIDA-010081 Gerber.zip (587KB) -
download TIDA-010081 CAD Files (Rev. A).zip (12053KB)
Design files
-
download PMP30629 BOM.pdf (131KB) -
download PMP30629 Assembly Drawing.pdf (122KB) -
download PMP30629 PCB.pdf (497KB) -
download PMP30629 CAD Files.zip (691KB) -
download PMP30629 Gerber.zip (55KB)
Design files
-
download TIDA-010048 BOM.pdf (104KB) -
download TIDA-010048 Assembly Drawing.pdf (1348KB) -
download TIDA-010048 PCB.pdf (1366KB) -
download TIDA-010048 CAD Files.zip (3092KB) -
download TIDA-010048 Gerber.zip (1559KB)
Design files
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
WSON (NGU) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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