Part Number: IT8502/N

Function: Notebook Embedded Controller

Package: LQFP, QFP 128 pin

Manufacturer: ITE ( www.ite.com.tw )

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Description

The IT8502 is a highly integrated embedded controller with system functions suitable for mobile system applications. The IT8502 directly interfaces to the LPC bus and provides ACPI embedded controller function, keyboard controller (KBC) and matrix scan, external flash interface for system BIOS and EC code, PWM and ADC for hardware monitor, PS/2 interface for external keyboard/mouse devices, BRAM and system wake up functions for system power management. It also supports the external flash (or EPROM) to be shared by the host and EC side.

Features

1. 8032 Embedded Controller

(1) Twin Turbo version/3-stage pipeline

(2) 9.2 MHz for EC domain and 8032 internal timer

(3) Variable frequency range to gain the maximum 8032 code-fetch performance

(4) Instruction set compatible with standard 8051/2

• Ext. 32768
• 4K SRAM
• Up to 16MB Serial Flash
• 12 ADC Channels, 10-bit
• 6 DAC Channels, 8-bit
• 8 PWM Channels
• 8502 No CIR; 8512 2 MCE CIR Ports
• SPI Flash Read Protection
• SPI Flash Write Protection
• PM3 I/O Channel (62/66, 68/6C, 6A/6E)
• Ext. WDT Can Stop After Starting
• Battery-backed 192Byte SRAM
• 73 + 9 GPIO
• UART Port x1
• SPI Device I/F x1, with a BUSY
• 4 SM Bus Masters
• A SMB Slave On Any Channel
• Signal Buffers
• 32768Hz Clock Out
• Timer x5
• PECI 2.0 Host
• TMR […]

 

Other data sheets are available within the file: IT8502E, IT8502F, IT8502G

IT8502 PDF Datasheet

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A PFC (Power Factor Correction) controller is a type of integrated circuit (IC) or chip that is used in power supply units (PSUs) to regulate and control the power factor of the input current. Power factor is a measure of how effectively electrical power is being utilized.

In power systems, a low power factor can lead to inefficient energy usage, increased power losses, and additional stress on the electrical grid. Power factor correction aims to improve the power factor by reducing the reactive power component of the current, thus bringing it closer to the ideal power factor of 1.

Part Number: OB6561P ( OB6561, OB6563 )

Function:  High Performance PFC Controller

Package: DIP, SOP 8 Pin type

Manufacturer: GreenEngine

Images:

 

Description

OB6561P is a high performance transition mode(TM) Power Factor Correction(PFC) control IC. Designed with On-Bright patented proprietary technology, OB6561P / OB6563 optimizes tradition transition mode control easily achieving system power factor to close to 1 with very low THD.

Its low startup current, accurate current limiting, over-voltage protection, and open-loop security make it highly suitable for modern AC-DC power supply applications including ballasts, SMPS units, LCD TV power modules, and lighting power systems.

Features

1. Transition mode operation with built-in analog multiplier

2. THD optimization

3. System open loop protection

4. Proprietary audio noise elimination

5. Dynamic and static output over voltage protection(OVP)

6. Cycle-by-Cycle current limiting

7. Burst mode control for improved efficiency at light load

8. External ENA/disable control

9. Under voltage lockout with hysteresis (UVLO)

10. Built in current sense filter, no external RC filter is needed

Applications

1. Electronic Ballasts

2. AC-DC SMPS (Switch-Mode Power Supplies)

3. LCD TV Power Supply Units

4. Lighting and adapter power modules

[ … ]

OB6561P PDF Datasheet