Automotive 65-VIN PSR flyback converter with 100-V, 1.5-A integrated power MOSFET
Product details
Parameters
Package | Pins | Size
Features
- AEC-Q100-qualified for automotive applications
- Device temperature grade 1: –40°C to 125°C ambient temperature range
- Designed for reliable and rugged applications
- Wide input voltage range of 4.5 V to 65 V
- 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
- Low EMI operation to meet CISPR 25
- High efficiency PSR flyback operation
- Quasi-resonant switching in boundary conduction mode (BCM) at heavy load
- External bias option for improved efficiency
- Single- and multi-output implementations
- Create a custom regulator design using WEBENCH® Power Designer
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Description
The LM5180-Q1 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-Q1 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.
The LM5180-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in 8-pin WSON package with 0.8-mm pin pitch and wettable flanks.
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 PMP30750 BOM.pdf (134KB) -
download PMP30750 Assembly Drawing.pdf (103KB) -
download PMP30750 PCB.pdf (295KB) -
download PMP30750 CAD Files.zip (415KB) -
download PMP30750 Gerber.zip (62KB)
Design files
-
download TIDA-020030 BOM.pdf (114KB) -
download TIDA-020030 Assembly Drawing.pdf (578KB) -
download TIDA-020030 PCB.pdf (2987KB) -
download TIDA-020030 CAD Files.zip (3639KB) -
download TIDA-020030 Gerber.zip (740KB)
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
-
download TIDA-020014 and TIDA-020015 Power Stage Design Files.zip (2645KB) -
download TIDA-020015 BOM.pdf (53KB) -
download TIDA-020015 Assembly Drawing.pdf (143KB) -
download TIDA-020015 PCB.pdf (615KB) -
download TIDA-020015 CAD Files.zip (709KB) -
download TIDA-020015 Gerber.zip (390KB)
Design files
Design files
-
download TIDA-010009 BOM.pdf (208KB) -
download TIDA-010009 Assembly Drawing.pdf (298KB) -
download TIDA-010009 PCB.pdf (1663KB) -
download TIDA-010009 CAD Files.zip (2752KB) -
download TIDA-010009 Gerber.zip (4145KB)
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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