Overview
The LM5033MMX/NOPB is a high-voltage push-pull voltage mode PWM controller produced by Texas Instruments. This IC is designed to implement push-pull, half-bridge, and full-bridge topologies, making it suitable for a variety of power conversion applications. It features an internal high-voltage start-up regulator, a single resistor oscillator setting, and precision voltage reference output, among other key functionalities. The LM5033MMX/NOPB is packaged in a 10-pin VSSOP (DGS) package and operates over a wide input voltage range from 15 V to 100 V, with an operating temperature range of -40°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | VSSOP (DGS) | - |
| Pins | 10 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Input Voltage Range | 15 to 90 (transient to 100) | V |
| Maximum Oscillator Frequency | 1 MHz | - |
| Peak Gate Driver Current | 1.5 A | - |
| Thermal Shutdown | Yes | - |
| Propagation Delays | < 100 ns | - |
Key Features
- Internal High-Voltage (100 V) Start-Up Regulator
- Single Resistor Oscillator Setting
- Synchronizable
- Precision Reference Output (2.5 V)
- Adjustable Soft Start
- Overcurrent Protection
- Direct Optocoupler Interface
- 1.5-A Peak Gate Drivers
- Thermal Shutdown
- Remote Shutdown Capability
Applications
- Intermediate DC-DC Bus Converters (IBC) with efficiency greater than 95%
- Telecommunication Power Converters
- Industrial Power Converters
- 42-V Automotive Systems
- Closed-loop voltage mode converters with highly regulated output voltage
- Open-loop DC transformers
Q & A
- What is the operating temperature range of the LM5033MMX/NOPB?
The operating temperature range is -40°C to 125°C.
- What is the input voltage range for the LM5033MMX/NOPB?
The input voltage range is from 15 V to 90 V, with transient capability to 100 V.
- What is the maximum oscillator frequency of the LM5033MMX/NOPB?
The maximum oscillator frequency is 1 MHz.
- Does the LM5033MMX/NOPB have thermal shutdown protection?
Yes, it includes thermal shutdown protection.
- What is the peak current of the gate drivers in the LM5033MMX/NOPB?
The peak current of the gate drivers is 1.5 A.
- Can the LM5033MMX/NOPB be used in automotive systems?
Yes, it can be used in 42-V automotive systems.
- What types of topologies can the LM5033MMX/NOPB implement?
The LM5033MMX/NOPB can implement push-pull, half-bridge, and full-bridge topologies.
- Does the LM5033MMX/NOPB have an internal start-up regulator?
Yes, it has an internal high-voltage start-up regulator.
- Is the LM5033MMX/NOPB RoHS compliant?
Yes, it is lead-free and RoHS compliant.
- What is the typical propagation delay of the LM5033MMX/NOPB?
The total propagation delays are less than 100 ns.
