DH321 Datasheet PDF – Green Mode Fairchild Power Switch

Part Number : DH321

Function : Green Mode Fairchild Power Switch (FPS)

Package : DIP, SO 8 Pin Type

Manufacturers : Fairchild Semiconductor

Image
DH321 fairchild switch

Description :

The DH321, FSDx321(x stands for H, L) are integrated Pulse Width Modulators (PWM) and Sense FETs specifically designed for high performance offline Switch Mode Power Supplies (SMPS) with minimal external components.

 

Pinouts :
DH321 pinouts

Features

• Internal Avalanche Rugged Sense FET
• Consumes only 0.65W at 240VAC & 0.3W load with Advanced Burst-Mode Operation
• Frequency Modulation for low EMI
• Precision Fixed Operating Frequency
• Internal Start-up Circuit
• Pulse by Pulse Current Limiting
• Abnormal Over Current Protection
• Over Voltage Protection
• Over Load Protection
• Internal Thermal Shutdown Function
• Auto-Restart Mode
• Under Voltage Lockout
• Low Operating Current (max 3mA)
• Adjustable Peak Current Limit
• Built-in Soft Start

 

 

DH321 Ordering Information

Both devices are integrated high voltage power switching regulators which combine an avalanche rugged Sense FET with a current mode PWM control block. The integrated PWM controller features include: a fixed oscillator with frequency modulation for reduced EMI, Under Voltage Lock Out (UVLO) protection, Leading Edge Blanking (LEB), optimized gate turn-on/turn-off driver, Thermal Shut Down (TSD) protection, Abnormal Over Current Protection (AOCP) and temperature compensated precision current sources for loop compensation and fault protection circuitry.

 

Block Diagram

DH321 Datasheet

DH321 Datasheet PDF Download

DH321 pdf

Other data sheets within the file : DH-321, DL321, FSDH321, FSDH321L, FSDL321

CM0465R Datasheet PDF – Green Mode Power Switch

This is integrated Pulse-Width Modulator (PWM) and SenseFET.

Part Number : CM0465R

Function : Green Mode Fairchild Power Switch

Package : TO-220-6 Pin

Manufacturers : Fairchild Semiconductor ( -> Onsemi.com )

Images :
CM0465R datasheet

Description :

The FSCM0465R, CM0465R is an integrated Pulse-Width Modulator (PWM) and SenseFET specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with minimal external components.

This device is an integrated high-voltage power switching regulator that combines an avalanche rugged SenseFET with a current mode PWM control block.

 

Features

1. Internal Avalanche Rugged SenseFET

2. Low Start-up Current (max. 40µA)

3. Low Power Consumption; under 1W at 240VAC and 0.4W Load

4. Precise Fixed Operating Frequency (66kHz)

5. Frequency Modulation for Low EMI

6. Pulse-by-Pulse Current Limiting (Adjustable)

7 Under-Voltage Lock Out (UVLO) with Hysteresis

8. Built-in Soft-Start (15ms)

 

Other data sheets within the file :

CMO465R, FSCM0465RGWDTU, FSCM0465RIWDTU, FSCM0465RJ

CM0465R Datasheet PDF Download

CM0465R pdf