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Shindengen
Shindengen
Description : Standby Compatible Partial Resonance Power Supply IC Module with High-speed IGBT

Introduction
Development of the MR2000 Series
Energy conservation guidelines from the Ministry of Economy, Trade and Industry require a reduction in the standby Power consumption of various types of electrical products as a means of reducing environmental CO2 levels. There are strong demands for reduced Power consumption in common devices such as TVs and set top boxes (STB) which remain on standby for long periods of time, and efficient operation under micro-loads is required. Furthermore, demands for integration of the various protective functions, higher functionality, and lower price are increasing to the extent that it is now difficult to satisfy such demands with existing products.

Primary Features
1. Current consumption is reduced with use of the burst mode, promoting standby compatibility with a single converter.
2. The optimized switching device provides ideal Partial Resonance operation for high efficiency and low noise.
3. The 900V resistant switching device (high-speed IGBT) simplifies design of Power supplies for worldwide input.
4. Power consumption under micro-load is extremely low (burst mode).
5. Use of a drain kick circuit eliminates the need for a start-up resistor.
6. The use of a soft drive circuit reduces noise.
7. Incorporates an over-current protection function (primary current detect, Ton limit).
8. Incorporates over-voltage protection and thermal shutdown functions.
9. A Power Supply circuit may be configured with the minimum of external components.
10. The use of the fully molded package is beneficial for insulation design.

Description : IC module for Partial Resonance Power Supply

Feature
Partial Resonance
   Realization of high efficiency and low noise by Partial Resonance operation
■ 900V high-voltage high-speed IGBT is used (MR40XX series)
   100V, 200V, W / W input can support high Power Supply.
■ Stand-by response (default mode)
   It has a boot mode switching function which is effective for standby reduction
■ Built-in start-up circuit eliminates start-up resistors
   After start-up, the start-up circuit is cut off,
      and the loss in the start-up circuit is reduced
■ The soft-drive circuit realizes low noise.
■ Various protection functions
   Overcurrent protection is self-resetting
   Overvoltage protection, overheat protection, latch stop

Main use
   DVD-Rec, PDP, LCD, Digital-STB, LBP, etc.

Shindengen
Shindengen
Description : (MR1xxx) IC module for Partial Resonance Power

MR1722 Datasheet Information

1. To achieve high efficiency and low noise by Partial resonant operation

2. Can be reduce Power consumption during the minute load by the burst mode

3. no need to start resistance by the activation circuit built-in Unnecessary detection resistor

4. The primary current detected by using the on-resistance of the MOSFET

5. To achieve low noise by soft drive circuit



* overcurrent protection function (on-width limit, the primary current limit), overvoltage protection,
equipped with overheat protection function

* miniaturization is realized by the adoption of the new package (FTO-220 equivalent in a 5-pin)

* Achieve small part of the reduction of external components

Part Name(s) : AN8038 AN8038S
Panasonic
Panasonic Corporation
Description : AC-DC switching Power Supply control IC with RCC local Resonance circuit for improved conformance with energy conservation laws

Overview
The AN8038 and AN8038S are self-excited AC-DC switching Power Supply control IC that adopt RCC local Resonance control. These ICs are designed to achieve high efficiency over a wide range of loads (light loads at the standby mode to heavy loads) for improved conformance with energy conservation laws, and support input levels used worldwide. They are particularly appropriate for use in AV and OA equipments.

Features
• Supports improved conformance with energy conservation laws by providing two operating modes. With external resistors, it is possible to set the operating point at which the modes change over according to the load Power, as shown below.
    1.Continuous (RCC) mode
        High efficiency achieved with local Resonance operation (zero cross detection).
    2.Discontinuous mode (standby) mode
        Reduced switching loss and standby Power due to reduced frequency
• Input voltage correction function. This function corrects the maximum on-period in a manner inversely proportional to the input voltage.
• Built-in overvoltage protection function (detects at VCC pin)
• Pulse-by-pulse overcurrent protection function (single detection per one cycle)
• Packages: 8-pin DIP ··· AN8038 8-pin SOP ··· AN8038S

Applications
• Facsimiles and other OA equipment
• Printers and other personal computer peripheral equipment
• AV equipment

Part Name(s) : AN8027 AN8037
Panasonic
Panasonic Corporation
Description : AC-DC switching Power Supply control IC with standby mode

■ Overview
The AN8027 and AN8037 are ICs developed for selfexcited switching regulator of RCC local Resonance control type.
These ICs are designed to achieve stability and high efficiency over a wide input voltage range and loads range (light loads to heavy loads), for supporting input levels used worldwide and improved conformance with energy conservation laws.

■ Features
• Support improved conformance with energy conservation laws by providing two operating modes.
    • Standby mode (light loads):
        Achieves better efficiency due to reduced frequency .
    • Normal mode:
        Achieves high efficiency in RCC local Resonance operation with zero-cross detection.
• Incorporating an input voltage compensation function available to a wide input range for worldwide use.
    • This function compensates the maximum on-period in inverse proportion to the input voltage.
• Incorporating a timer latch function.
    • The time period can be adjusted according to the overload in normal mode or standby mode.
    • This function makes it possible to protect the IC from damage that may be caused by the short-circuiting of the ICs external capacitor for the timer.
• Incorporating an overvoltage protection function. (detects at VCC pin)
• Incorporating a pulse-by-pulse overcurrent protection function, which makes latch protection possible at the time of the short-circuiting of the transformers primary winding.
• Adopting a 9-pin single inline package (E-9S: available to manufacturing in overseas).
• AN8027: Transformer resetting is detected from the high- or low-level signal on the TR pin.
• AN8037: Transformer resetting is detected from the falling edge of the high-level signal on the TR pin.
                 Refer to the "[1] operation descriptions 7. local Resonance operation" section in the application notes.

■ Applications
• Televisions, VCRs, facsimiles, and printers

Part Name(s) : MB3873 MB3873PF
Fujitsu
Fujitsu
Description : Multi-Resonance AC/DC Converter IC

■ DESCRIPTION
The MB3873 is a pulse frequency modulation (PFM) type multi-Resonance AC/DC converter IC providing soft switching functions in a more compact, higher-efficiency, low-noise package.
Since this product allows reduced number of the components and reduced size of the transformer, it is also compatible with the miniaturization of AC adaptor.
The product retains the multi-Resonance for the non-load, over-load and load short-circuit over the wide range of input voltage, making it the appropriate IC for the small-sized AC adaptor.

■ FEATURES
• Operating Power Supply voltage : 10V to 28V
• Operating current : 2.5mA typ.
• Low standby current : 400µA typ.
• Control frequency range : 10kHz to 800kHz
• Operating temperature range : −30°C to +105°C
• Soft start circuit on-chip
• Overvoltage detection circuit on-chip
• Overload detection circuit on-chip
• Over temperature detection circuit on-chip
• Under voltage lockout protection circuit on-chip

Part Name(s) : AN8028
Panasonic
Panasonic Corporation
Description : Self-excited RCC pseudo-Resonance type AC-DC switching Power Supply control IC

■Overview

The AN8028 is an IC developed for controlling the self-excited switching Power Supply employing the RCC pseudo-Resonance type control method. It is compact, equipped only with the necessary minimum functions. The maximum on-period and the minimum off-period can be set separately by using the external capacitor and resistor respectively. It is suitable for the Power Supply of AV equipment.



■Features

•Operating Supply voltage range:

Stop voltage (8.6 V typical) to 34 V

•Output block employs the totem pole system.

Power MOSFET can be directly driven.

(output peak current: ±1 A maximum)

•Small pre-start operating current (95 µA typical) allows using a small size start resistor.

•Built-in pulse-by-pulse overcurrent protection function

•Incorporating the protection circuit against malfunction at low voltage (start/stop: 14.9 V/8.6 V)

•Built-in overvoltage protection function (externally resettable)

•Built-in timer latch function

•Equipped with frequency (VF) control function.

•9-pin single inline package expands the freedom of board design


Part Name(s) : AN8026
Panasonic
Panasonic Corporation
Description : Self-excited RCC pseudo-Resonance type AC-DC switching Power Supply control IC

■ Overview
The AN8026 is an IC developed for controlling the self-excited switching Power Supply employing the RCC pseudo-Resonance type control method.
It is compact, equipped only with the necessary minimum functions.
The maximum on-period and the minimum off-period can be set separately by using the external capacitor and resistor respectively.
It is suitable for the Power Supply of AV equipment.

■ Features
• Operating Supply voltage range:
    Stop voltage (8.6 V typical) to 34 V
• Output block employs the totem pole system.
Power MOSFET can be directly driven.
    (output peak current: ±1 A maximum)
• Small pre-start operating current (80 µA typical) allows using a small size start resistor.
• Built-in pulse-by-pulse overcurrent protection function
• Incorporating protection circuit against malfunction at low voltage (start/stop: 14.9 V/8.6 V)
• Built-in overvoltage protection function (externally resettable)
• Equipped with frequency (VF) control function.
• 9-pin single inline package expands the freedom of board design.

■ Applications
• Televisions, facsimiles, printers, scanners, video equipment

Part Name(s) : AN8029
Panasonic
Panasonic Corporation
Description : Self-excited RCC pseudo-Resonance type AC-DC switching Power Supply control IC

■ Overview
The AN8029 is an IC developed for controlling the self-excited switching Power Supply employing the RCC pseudo-Resonance type control method.
It is compact, equipped only with the necessary minimum functions.
The maximum on-period and the minimum off-period can be set separately by using the external capacitor and resistor respectively.
It is suitable for the Power Supply of AV equipment.

■ Features
• Operating Supply voltage range:
    Stop voltage (8.6 V typical) to 34 V
• Output block employs the totem pole system.
Power MOSFET can be directly driven. (output peak current: ±1 A maximum)
• Small pre-start operating current (95 µA typical) allows using a small size start resistor.
• Built-in pulse-by-pulse overcurrent protection function
• Incorporating the protection circuit against malfunction at low voltage (start/stop: 14.9 V/8.6 V)
• Built-in overvoltage protection function (externally resettable)
• Built-in timer latch function
• Equipped with frequency (VF) control function.
• 9-pin single inline package expands the freedom of board design

■ Applications
• Televisions, facsimiles, printers, scanners, video equipment

SANKEN
Sanken Electric co.,ltd.
Description : Controller IC for Current Resonant Type Switching Power Supply with Half-Bridge Resonance, High Efficiency and Low Noise

■ General Descriptions
The SSC9510 series products are controller ICs, incorporating a floating drive circuit for half-bridge type Resonance. The product achieves high efficiency and low noise Power Supply systems by the ZVS and ZCS. The product is recommended for high-efficiency small and standardized Power supplies because of easy circuit designs with few external components.

■ Features
● Soft-Switched Multi-Resonant Zero Current Switch (SMZ)
   The zero-current switching (ZSC) and zero-voltage switching (ZVS) of half-bridge type
   Resonance achieve the high efficiency and low noise systems.
● Automatic Dead Time Adjustment Function for Wide Resonant Conditions
● Burst-Oscillation Function
   The function enables the stable output control at no load to light load conditions
   and improves the efficiency.
● Soft-Start Function
● Brown-In / Brown-Out Function
   The function enables the oscillation start /stop by externally rated input voltage and
   makes protections at low input voltage.
● External Latch Protection (ELP)
   The function enables the latch shutdown by external signal.
● Various Protections
   Overcurrent Protection (OCP)---------------------------------- Auto-Restart
   Three-step protections depending on overcurrent status
   Overload Protection (OLP) ------------------------------------- Latch Shutdown
   Overvoltage Protection (OVP) --------------------------------- Latch Shutdown
   External Latch Protection (ELP) ------------------------------- Latch Shutdown
   Thermal Shutdown Protection (TSD) ------------------------- Latch Shutdown

■ Applications
Switching Power Supplies for
   Digital Consumer Equipment; LCD-TVs, PDP-TVs, etc.,
   OA Equipment; Severs, Multi-Function Printers, etc.,
   Industry Machines, Communication Devices, Others

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