A power supply switching mode controller IC, also known as a power supply controller or SMPS controller, is an integrated circuit designed to control and regulate the operation of a switching mode power supply (SMPS). These ICs are widely used in various power supply applications to achieve efficient power conversion.
Part Number: HS8108
Function: Power Supply Switching Mode Controller IC
Package: DIP 20 Pin Type
Manufacturer: HuaXin
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Description
The HS8108 is a power supply switching mode controller IC for desktop PCs. It provides all the functions necessary to monitor and control the output of the power supply. Remote ON/OFF control, power good circuitry, some protection features against over-voltage and over-power are implemented. It directly senses all the output rails for OVP without the need of external dividers. A built-in timer generates accurate timing for control circuit including the PS-off delay.
- Pulse Width Modulation (PWM) Control: These chips generate a PWM signal that controls the switching of the power supply’s primary-side switches, such as MOSFETs or IGBTs. The duty cycle of the PWM signal determines the on-time and off-time of the switches, regulating the output voltage or current.
- Voltage Feedback Control: Off-line power supply control chips incorporate feedback control loops to regulate the output voltage. They compare the output voltage with a reference voltage and adjust the PWM signal accordingly to maintain a stable and desired output voltage.
- Power Factor Correction (PFC): Many off-line power supply control chips include power factor correction functionality. PFC helps improve the power supply’s input power factor, reducing harmonic distortion and maximizing power efficiency.
- Protection Features: These chips provide protection mechanisms to safeguard the power supply and connected components. Common protection features include overvoltage protection, undervoltage lockout, overcurrent protection, overtemperature protection, and short circuit protection.
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Features
1. PC half-bridge (or 494) power supply supervisor + two 431 + PWM
2. Remote ON/OFF function
3. Power-down warning circuitry ﹠ Power good circuitry
4. Delay time for PSON and PG signal
5. Over-voltage protection for 3.3V, 5V and 12V
6. Under-voltage protection for 3.3V, 5V,12V, -12V and/or -5V
7. Push-pull PWM operation and totem pole outputs
8. Over-power and short-circuit protection
9. Two shunt regulator for 3.3V and 5V Sb