Part Number: UP6182

Function: Dual Synchronous Buck Controller

Package: VQFN 24L Type

Manufacturer: uPI Semiconductor

Images:

Description

UP6182 Dual Synchronous Buck Controller with 5V/3.3V 100mA LDOs for Notebook System Power General Description The uP6182 is a dual synchronous buck controller with 5V/3.3V 100mA LDOs for notebook system power supply solution. A 250kHz VCLK output can be used for external charge pump to generate gate drive voltage for load switches. The uP6182 supports high efficiency, fast transient response and a combined power-good signal. The out of audio mode maintains the switching frequency above audio frequency, which eliminates noise in audio applications. The adaptive on-time control provides a convenient and efficient operation.

The uP6182 has internal soft-start to control the inrush current. The soft-stop feature avoids negative output voltage for undervoltage protection, overcurrent protection, and shutdown by discharging output through an internal switch, and by damping the inductor current. Supply input voltages ranging from 5.5V to 26V and output voltages from 2V to 5.5V. Other features include overcurrent protection, overvoltage protection, power-up sequencing, power OK output, and thermal shutdown.

Features

1. Wide Input Voltage Range: 5.5V to 26V

2. Two Synchronous Buck Controllers

(1) Output Voltage Range: 2V to 5.5V

(2) Selectable Audio Mode in Light Load

(3) Internal 1.6ms Output Voltage Softstart

(4) Adaptive On Time Control Architecture

 

Applications:

1. Notebook and Subnotebook System Power Supplies

2. 3-4 Cell Li-Ion Battery-Power Devices

3. Dual Output Supplies for DSP, Memory, Logic and Microprocessor

UP6182 PDF Datasheet

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

Images:

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.

 

1. 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.
2. 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.
3. 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.
4. 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

HS8108 PDF Datasheet