The LM5020MM-1/NOPB from Texas Instruments is a high-voltage current-mode PWM controller designed for single-ended primary power-converter topologies. It supports Boost, Flyback, Forward and SEPIC configurations and operates from a wide 13V to 100V input range, making it suitable for industrial, telecom and isolated DC/DC power designs.
Current-mode control provides inherent line feed-forward and helps simplify feedback-loop compensation. An integrated high-voltage start-up bias regulator allows the controller to start directly from input voltages as high as 100V, reducing external high-voltage start-up circuitry.
The requested device is the LM5020-1 version, which provides an approximately 80% maximum duty-cycle limit and integrated slope compensation. This differentiates it from the LM5020-2 version, which is limited to a 50% maximum duty cycle.
The controller supports oscillator frequencies up to 1MHz and external clock synchronization, with total propagation delays below 100ns. An integrated 1A peak gate driver can directly drive an external power MOSFET, helping reduce the number of additional gate-drive components.
Integrated control and protection functions include an error amplifier, precision voltage reference, programmable soft-start, programmable line UVLO with adjustable hysteresis, cycle-by-cycle over-current protection, current-sense leading-edge blanking, slope compensation and thermal shutdown.
The exact LM5020MM-1/NOPB ordering option uses a 10-pin VSSOP (DGS) package measuring approximately 3 × 4.9mm and operates from -40°C to +125°C. TI currently lists the part as ACTIVE, with Catalog rating, RoHS and REACH compliance, Sn lead finish and MSL Level 1 / 260°C Unlimited. The MM carrier option contains 1000 devices per small tape-and-reel.
Key Specifications:
- Brand: Texas Instruments / TI
- Part Number: LM5020MM-1/NOPB
- Family: LM5020
- Product Type: High-Voltage PWM Controller
- Control Mode: Current Mode
- Topologies: Boost / Flyback / Forward / SEPIC
- Input Voltage Range: 13V to 100V
- Maximum Input Voltage: 100V
- Maximum Duty Cycle: Approx. 80% for LM5020-1
- Maximum Oscillator Frequency: 1MHz
- Frequency Synchronization: Yes
- Total Propagation Delay: <100ns
- Peak Gate-Drive Current: 1A
- Internal High-Voltage Start-Up Regulator: Yes
- Error Amplifier: Integrated
- Precision Reference: Integrated
- Programmable Soft-Start: Yes
- Programmable UVLO: Yes
- Adjustable UVLO Hysteresis: Yes
- Cycle-by-Cycle Current Limit: Yes
- Slope Compensation: Yes, LM5020-1
- Current-Sense Leading-Edge Blanking: Yes
- Thermal Shutdown: Yes
- Rectification: Nonsynchronous
- Operating Temperature: -40°C to +125°C
- Package: VSSOP-10
- TI Package Code: DGS
- Package Size: Approx. 3 × 4.9mm
- Pin Count: 10
- Mounting Type: SMD / SMT
- Packaging: Small Tape & Reel
- Package Quantity: 1000 pcs
- Lead Finish: Sn
- MSL: Level 1 / 260°C Unlimited
- RoHS Compliant: Yes
- REACH Compliant: Yes
- Rating: Catalog
- Product Status: ACTIVE.
Reviews
There are no reviews yet.