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LM5035MH from NSC,National Semiconductor

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LM5035MH

Manufacturer: NSC

PWM Controller with Integrated Half-Bridge and SyncFET Drivers

Partnumber Manufacturer Quantity Availability
LM5035MH NSC 32 In Stock

Description and Introduction

PWM Controller with Integrated Half-Bridge and SyncFET Drivers The LM5035MH is a high-voltage PWM controller manufactured by National Semiconductor (NSC).  

**Specifications:**  
- Input Voltage Range: 15V to 100V  
- Output Voltage: Adjustable  
- Switching Frequency: Up to 1MHz  
- Duty Cycle: Up to 50%  
- Operating Temperature Range: -40°C to +125°C  
- Package: 20-Pin HTSSOP  

**Descriptions:**  
The LM5035MH is designed for high-voltage DC-DC converter applications. It integrates a high-voltage start-up regulator, PWM controller, and gate driver. It supports half-bridge and full-bridge topologies.  

**Features:**  
- High-voltage start-up regulator (up to 100V)  
- Programmable oscillator frequency  
- Adaptive dead-time control  
- Cycle-by-cycle current limiting  
- Soft-start functionality  
- Under-voltage lockout (UVLO)  
- Thermal shutdown protection  

The device is suitable for telecom, industrial, and automotive power supply applications.

Application Scenarios & Design Considerations

PWM Controller with Integrated Half-Bridge and SyncFET Drivers
Partnumber Manufacturer Quantity Availability
LM5035MH NS 184 In Stock

Description and Introduction

PWM Controller with Integrated Half-Bridge and SyncFET Drivers The LM5035MH is a high-voltage pulse width modulation (PWM) controller manufactured by Texas Instruments (formerly National Semiconductor, NS).  

### **Specifications:**  
- **Input Voltage Range:** 15V to 100V  
- **Output Voltage:** Adjustable via external components  
- **Switching Frequency:** Adjustable up to 1MHz  
- **Duty Cycle Range:** Up to 50% (for push-pull topology)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 20-pin HTSSOP (PowerPAD™)  
- **Control Method:** Voltage-mode PWM  
- **Gate Drive Output Current:** 1.5A (peak)  

### **Descriptions:**  
The LM5035MH is designed for high-voltage DC-DC converter applications, including isolated power supplies. It integrates a high-voltage start-up regulator, eliminating the need for an external bias supply. The controller supports multiple topologies such as push-pull, half-bridge, and full-bridge configurations.  

### **Features:**  
- **Integrated High-Voltage Start-Up Regulator:** Operates directly from a high-voltage input (up to 100V).  
- **Programmable Soft-Start:** Reduces inrush current during startup.  
- **Cycle-by-Cycle Current Limiting:** Protects against overcurrent conditions.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within voltage limits.  
- **Synchronizable Oscillator:** Allows synchronization to an external clock.  
- **Error Amplifier:** Supports voltage feedback control loops.  
- **Thermal Shutdown:** Protects the device from overheating.  

This information is based on the manufacturer's datasheet. For detailed application notes, refer to Texas Instruments' official documentation.

Application Scenarios & Design Considerations

PWM Controller with Integrated Half-Bridge and SyncFET Drivers

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