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Champion
Champion Microelectronic
Description : NO BLEED RESISTOR GREEN MODE PFC/PWM controlLER COMBO

GENERAL DESCRIPTION
The CM6802 is a green PFC/PWM. It is the new generation of ML4802, ML4841, ML4801 and ML4824-2. Its system clock frequency is generated by the external RT and CT, and then its PWM frequency is 50% of the clock and its PFC frequency is 25% of the clock. CM6802 is designed to
be pin-pin compatible with CM6800 family, ML4800 family and ML4824 family. Its PWM (DC to DC section) can be easily configured to voltage Mode or Current Mode.   The green mode function can easily be designed so during the no load condition, its input power can be less than 0.75Watt
without shutting off PFC. Its PFC green mode threshold and the PWM green mode threshold can separately set by selecting the proper the RC filter at ISENSE pin (pin3) and CT on RAMP 1 pin (pin 7). power Factor Correction (PFC) allows the use of smaller, lower cost bulk capacitors,
reduces power line loading and stress on the switching FETs, and results in a power supply that fully compiles with IEC-1000-3-2 specifications. Intended as a BiCMOS version of the industry-standard CM6800, CM6802 includes circuits for the implementation of leading edge, average
current, “boost” type power factor correction and a trailing edge, pulse width modulator (PWM). Both PFC and PWM Gate-driver with 0.5A capabilities minimizes the need for external driver circuits. Low power requirements improve efficiency and reduce component costs.

FEATURES
Patent Number #5,565,761, #5,747,977, #5,742,151, #5,804,950, #5,798,635
fosc=2 x fPWM =4 x fpfc
No bleed resistor required
Before the chip wakes up, IAC can start up VCC
Pin to pin Compatible with CM6800, ML4824 and ML4800 (It needs to modify the values of the external component to work properly).
User Program PFC automatic green mode threshold(patented)
User Program PWM automatic green mode threshold(patented)
Input power less than 0.75Watt without shutting off PFC at no load condition.
Additional folded-back current limit for PWM section.
23V Bi-CMOS process
PWM pulse keeping for the green mode
VIN OK guaranteed turn on PWM at 2.5V instead of 1.5V 
Internally synchronized leading edge PFC and trailing edge PWM in one IC
Slew rate enhanced transconductance error amplifier for ultra-fast PFC response
Low start-up current (30µA typ.)
Low operating current (3.0mA type.)
Low total harmonic distortion, High PF
Reduces ripple current in the storage capacitor between the PFC and PWM sections
Average current, continuous or discontinuous boost leading edge PFC
VCC OVP Comparator will turn off both PFC and PWM
Low power Detect Comparator
Tri-Fault detect to meet UL1950
PWM configurable for current mode or voltage mode operation
Current fed gain modulator for improved noise immunity
Brown-out control, over-voltage protection, UVLO, and soft start, and Reference OK

APPLICATIONS
Desktop PC power supply
Internet Server power supply
IPC power supply
UPS
Battery Charger
DC Motor power supply
Monitor power supply
Telecom System power supply
Distributed power

Fairchild
Fairchild Semiconductor
Description : Highly Integrated, Dual-PWM Combination controller

Description
The Highly integrated FAN6791/3 dual PWM combination controller provides several features to enhance the performance of converters.

Features
High-voltage Startup
Low Operating Current
Interleaved Stand-by PWM / Forward PWM switching
Green Mode Stand-by PWM / Forward PWM
Linearly Decreasing Stand-by PWM Frequency to 20kHz
Remote On / Off
AC Brownout Protection
Forward PWM with Soft-Start
Frequency Hopping to Reduce EMI Emissions
Cycle-by-Cycle Current Limiting for Stand-by PWM / Forward PWM
Leading-Edge Blanking for Stand-by PWM / Forward PWM
Synchronized Slope Compensation for Stand-by PWM / Forward PWM
GATE Output Maximum voltage Clamp
VDDOver-voltage Protection (OVP)
VDDUnder-voltage Lockout (UVLO)
Internal Open-Loop Protection for Stand-by PWM / Forward PWM
Constant power Limit for Stand-by PWM / Forward PWM

Applications
General-purpose switch-mode power supplies and flyback power converters, including:
PC-ATX power Supplies

Description : Half bridge control IC for CCFL backlighting

General description
The UBA2071 and UBA2071A are High voltage ICs intended to drive Cold Cathode Fluorescent Lamps (CCFLs) or External Electrode Fluorescent Lamps (EEFLs) for backlighting applications. They can drive a half bridge circuit made up of two NMOSFETs with a supply voltage of up to 550 V, so the inverter can be supplied directly from a 400 V PFC bus.
The UBA2071 and UBA2071A contain a controller, a level shifter, a bootstrap diode and drivers for the external half bridge power switches. It also contains a low frequency PWM generator, which can be used to control the brightness level of the lamps, using an analog brightness/dimming control voltage. PWM dimming can also be realized, using a digital PWM input signal. PWM dimming can be synchronized with other ICs. The lamp current is controlled by means of a true zero voltage switching resonant control principle, ensuring lowest possible switch losses in the half bridge power structure.
The UBA2071 is designed to be supplied by a ∆V/∆t supply from the half bridge circuit that it drives. The IC itself needs little current and if the IC is off, a clamp protects the supply voltage from getting too High.
The UBA2071A is designed to be supplied by a fixed 12 V supply. It has a lower supply start voltage and no supply clamp.

Features
■ Suitable for operating in a very wide inverter supply voltage range (up to 550 V DC).
■ Integrated level shifter.
■ Integrated bootstrap diode.
■ Lamp current control by means of a true zero voltage switching resonant control
   principle.
■ Sample & Hold circuit, maintaining current control value during PWM lamp-off
   situation.
■ Separately definable time constants for current control loop and PWM dimming
   attack/decay setting.
■ Overvoltage control.
■ Overcurrent protection.
■ Ignition failure detection.
■ Hard switching control.
■ Arcing detection.
■ Open/short pin protections on feedback pins.
■ Integrated, programmable fault timer.
■ Bidirectional pin acting both as fault signaling output and input, allowing external fault
   interfacing to operate via the integrated fault timer.
■ Brightness level adjustment through PWM dimming.
■ Integrated PWM generator.
power-down mode.
■ Communication pin for master / slave operation.
■ DC blocking capacitor pre-charging sequence.
supply clamp (UBA2071 only).

Applications
■ LCD-backlighting, including LCD-TV and LCD-monitor applications. The IC is intended
   to drive and control a half bridge inverter with resonant load circuit for CCFLs, but can
   also drive an array of External Electrode Fluorescent Lamps (EEFLs).

Description : 10-PIN Green-Mode PFC/PWM Combo controlLER for High Density AC Adapter

GENERAL DESCRIPTION
The CM6805A and CM6806A are the Green-Mode PFC/PWM Combo controller for High Density AC Adapter. For the power supply, its input current shaping PFC performance could be very close to the performance of the CM6800 or ML4800 leading edge modulation average current topology.
CM6805A/CM6806A offers the use of smaller, lower cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply fully compliant to IEC1000-3-2 specifications. The CM6805A / CM6806A includes circuits for the implementation of a leading edge, input current shaping technique “boost” type PFC and a trailing edge, PWM.
The CM6805A’s PFC and PWM operate at the same frequency, 67.5kHz. A PFC OVP comparator shuts down the PFC section in the event of a sudden decrease in load. The PFC section also includes peak current limiting for enhanced system reliability.

FEATURES
♦ Both PFC and PWM have the Green Mode to meet blue angel and energy star spec.
♦ 10-Pin SOIC package
PWM pulse skipping for the green mode
♦ Use RAC as the Startup resistor around 5 Mega Ohm at IAC pin
♦ It can use the HV bipolar to start up the chip and it helps green mode.
♦ Easy to configure into Boost Follower
♦ Enable lowest BOM for power supply with PFC
♦ Internally synchronized PFC and PWM in one IC
♦ Patented slew rate enhanced voltage error amplifier with advanced input current shaping technique
♦ Universal Line Input voltage
♦ CCM boost or DCM boost with leading edge modulation PFC using Input Current Shaping Technique
♦ Feedforward IAC pin to do the automatic slope compensation
♦ PFCOVP, VCCOVP, Precision -1V PFC ILIMIT, PFC Tri-Fault Detect comparator to meet UL1950
♦ Low supply currents; start-up: 100uA typical, operating current: 2mA typical.
♦ Synchronized leading PFC and trailing edge modulation PWM to reduce ripple current in the storage capacitor between the PFC and PWM sections and to reduce switching noise in the system
♦ VINOK Comparator to guarantee to enable PWM when PFC reach steady state
High efficiency trailing-edge current mode PWM
♦ Exact 50% PWM maximum duty cycle
♦ UVLO, REFOK, and brownout protection
♦ Digital PFC and PWM soft start, ~10mS
♦ Precision PWM 1.5V current limit for current mode operation
PWMtrifault to sense DC to DC short and Turn off PFC at GMth
PWMtrifault also can be programmed to do the Thermal Protection

APPLICATIONS
♦ AC Adaptor
♦ Open Frame

 

Champion
Champion Microelectronic
Description : 10-PIN Green-Mode PFC/PWM Combo controlLER

GENERAL DESCRIPTION
The CM6805BO is the Green-Mode PFC/PWM Combo controller for Desktop PC and High Density AC Adapter. For the power supply, it’s input current shaping PFC performance could be very close to the performance of the CM6800 or ML4800 leading edge modulation average current topology.
CM6805BO offers the use of smaller, lower cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply fully compliant to IEC1000-3-2 specifications. The CM6805BO includes circuits for the implementation of a leading edge modulation, input current shaping technique “boost” type PFC and a trailing edge modulation current, PWM.
The CM6805BO’s PFC and PWM operate at the same frequency, 100kHz. A PFC OVP comparator shuts down the PFC section in the event of a sudden decrease in load. The PFC section also includes peak current limiting for enhanced system reliability.
PFC has a PFCOFFB pin which can use for AC brown out application and determine the GMth to turn off PFC.

FEATURES
♦ 10-Pin SOIC package.
♦ Use RAC around 4~8 Mega Ohm at IAC pin.
♦ Easy to configure into Boost Follower.
♦ Enable lowest BOM for power supply with PFC.
♦ Internally synchronized PFC and PWM in one IC.
♦ Patented slew rate enhanced voltage error amplifier with advanced input current shaping technique.
♦ Universal Line Input voltage
♦ CCM boost or DCM boost with leading edge modulation PFC using Input Current Shaping Technique.
♦ Feed forward IAC pin to do the automatic slope compensation.
♦ PFCOVP, Precision -1V PFC ILIMIT, PFC Tri-Fault Detect comparator to meet UL1950
♦ Low supply currents; start-up: 100uA typical, operating current: 2mA typical.
♦ Synchronized leading PFC and trailing edge modulation PWM to reduce ripple current in the storage capacitor between the PFC and PWM sections and to reduce switching noise in the system
♦ VIN-OK Comparator to guarantee to enable PWM when PFC reach steady state
High efficiency trailing-edge current mode PWM
♦ Exact 50% PWM maximum duty cycle
♦ UVLO, REFOK, and brownout protection
♦ Digital PFC and PWM soft start, ~10mS
♦ Precision PWM 1.5V current limit for current mode operation
♦ PFCOFFB pin to sense light load to turn off PFC or PFCOFFB pin to sense Input voltage as AC Brown Out

 

Champion
Champion Microelectronic
Description : 10-PIN Green-Mode PFC/PWM Combo controlLER for High Density AC Adapter

GENERAL DESCRIPTION
The CM6807 is the Green-Mode PFC/PWM Combo controller for High Density AC Adapter. For the power supply less than 200Watt, it’sinput current shaping PFC performance could be very close to the performance of the CM6800 or ML4800 leading edge modulation average current topology.

FEATURES
Patent Filed #5,565,761,#5,747,977, #5,742,151, #5,804,950, #5,798,635
Both PFC and PWM have the Green Mode to meet blue angel and energy star spec.
10-Pin SOIC package
PWM pulse skipping for the green mode
Use RAC as the Startup resistor which can be > 2000K or Higher at IAC pin
It can use the HV bipolar to start up the chip and it helps green mode.
Easy to configure into Boost Follower
Enable lowest BOM for power supply with PFC
Internally synchronized PFC and PWM in one IC
Patented slew rate enhanced voltage error amplifier with advanced input current shaping technique
Universal Line Input voltage
CCM boost or DCM boost with leading edge modulation PFC using Input Current Shaping Technique
Feedforward IAC pin to do the automatic slope compensation
PFCOVP, VCCOVP, Precision -1V PFC ILIMIT, PFC Tri-Fault Detect comparator to meet UL1950
Low supply currents; start-up: 100uA typical, operating current: 2mA typical.
Synchronized leading PFC and trailing edge modulation PWM to reduce ripple current in the storage capacitor
between the PFC and PWM sections and to reduce switching noise in the system
VINOK Comparator to guarantee to enable PWM when PFC reach steady state 
High efficiency trailing-edge current mode PWM
Exact 50% PWM maximum duty cycle
UVLO, REFOK, and brownout protection
Digital PFC and PWM soft start, ~10mS
Precision PWM 1.5V current limit for current mode operation
PWMtrifault to sense DC to DC short and Turn off PFC at GMth
PWMtrifault also can be programmed to do the Thermal Protection

APPLICATIONS
‹AC Adaptor
‹Open Frame

Description : 10-PIN Green-Mode PFC/PWM Combo controlLER for High Density AC Adapter

GENERAL DESCRIPTION
The CM6807A is the Green-Mode PFC/PWM Combo controller for High Density AC Adapter. For the power supply less than 200Watt, it’sinput current shaping PFC performance could be very close to the performance of the CM6800 or ML4800 leading edge modulation average current topology.

FEATURES
Patent Filed #5,565,761,#5,747,977, #5,742,151, #5,804,950, #5,798,635
Both PFC and PWM have the Green Mode to meet blue angel and energy star spec.
10-Pin SOIC package
PWM pulse skipping for the green mode
Use RAC as the Startup resistor which can be > 2000K or Higher at IAC pin
It can use the HV bipolar to start up the chip and it helps green mode.
Easy to configure into Boost Follower
Enable lowest BOM for power supply with PFC
Internally synchronized PFC and PWM in one IC
Patented slew rate enhanced voltage error amplifier with advanced input current shaping technique
Universal Line Input voltage
CCM boost or DCM boost with leading edge modulation PFC using Input Current Shaping Technique
Feedforward IAC pin to do the automatic slope compensation
PFCOVP, VCCOVP, Precision -1V PFC ILIMIT, PFC Tri-Fault Detect comparator to meet UL1950
Low supply currents; start-up: 100uA typical, operating current: 2mA typical.
Synchronized leading PFC and trailing edge modulation PWM to reduce ripple current in the storage capacitor
between the PFC and PWM sections and to reduce switching noise in the system
VINOK Comparator to guarantee to enable PWM when PFC reach steady state 
High efficiency trailing-edge current mode PWM
Exact 50% PWM maximum duty cycle
UVLO, REFOK, and brownout protection
Digital PFC and PWM soft start, ~10mS
Precision PWM 1.5V current limit for current mode operation
PWMtrifault to sense DC to DC short and Turn off PFC at GMth
PWMtrifault also can be programmed to do the Thermal Protection

APPLICATIONS
‹AC Adaptor
‹Open Frame

Description : Bipolar IC For switching power supply control

■ Description
The FA7610CP(N), 7612CP(N) and 7617CP(N) are bipolar ICs containing basic circuits necessary for PWM-type switching power supply control.
To minimize the number of external discrete components, the FA7610CP(N) is provided for a flyback or step-up power supply circuit, the FA7612CP(N) for a step-down power-supply circuit and FA7617CP(N) for a flyback power supply circuit.

■ Features
FA7610CP(N)
• For flyback transformer-type or step-up power-supply circuit (maximum output duty = 64% typical)
• Totem-pole predriver
PWM-type switching power supply control
• Low-voltage operation (VCC = 3.6 to 22V)
• Latch-mode short-circuit protection function (no malfunction by noise)
• Soft-start function
• Undervoltage lockout function
• One capacitor shared for short circuit protection and for soft start to minimize the number of external discrete components

FA7612CP(N)
• For step-down power-supply circuit (maximum output duty = up to 100%)
• Open collector output
PWM-type switching power supply control
• Low-voltage operation (VCC = 3.6 to 22V)
• Latch-mode short-circuit protection function (no malfunction by noise)
• Soft-start function
• Undervoltage lockout function
• One capacitor shared for short circuit protection and for soft start to minimize the number of external discrete components

FA7617CP(N)
• For flyback transformer-type power-supply circuit (maximum output duty = 67% typical)
• Open collector output
PWM-type switching power supply control
• Low-voltage operation (VCC = 3.6 to 22V)
• Latch-mode short-circuit protection function (no malfunction by noise)
• Soft-start function
• Undervoltage lockout function
• One capacitor shared for short circuit protection and for soft start to minimize the number of external discrete components

■ Applications
• Battery power supply for portable equipment

 

Description : Bipolar IC For switching power supply control

■ Description
The FA7610CP(N), 7612CP(N) and 7617CP(N) are bipolar ICs containing basic circuits necessary for PWM-type switching power supply control.
To minimize the number of external discrete components, the FA7610CP(N) is provided for a flyback or step-up power supply circuit, the FA7612CP(N) for a step-down power-supply circuit and FA7617CP(N) for a flyback power supply circuit.

■ Features
FA7610CP(N)
• For flyback transformer-type or step-up power-supply circuit (maximum output duty = 64% typical)
• Totem-pole predriver
PWM-type switching power supply control
• Low-voltage operation (VCC = 3.6 to 22V)
• Latch-mode short-circuit protection function (no malfunction by noise)
• Soft-start function
• Undervoltage lockout function
• One capacitor shared for short circuit protection and for soft start to minimize the number of external discrete components

FA7612CP(N)
• For step-down power-supply circuit (maximum output duty = up to 100%)
• Open collector output
PWM-type switching power supply control
• Low-voltage operation (VCC = 3.6 to 22V)
• Latch-mode short-circuit protection function (no malfunction by noise)
• Soft-start function
• Undervoltage lockout function
• One capacitor shared for short circuit protection and for soft start to minimize the number of external discrete components

FA7617CP(N)
• For flyback transformer-type power-supply circuit (maximum output duty = 67% typical)
• Open collector output
PWM-type switching power supply control
• Low-voltage operation (VCC = 3.6 to 22V)
• Latch-mode short-circuit protection function (no malfunction by noise)
• Soft-start function
• Undervoltage lockout function
• One capacitor shared for short circuit protection and for soft start to minimize the number of external discrete components

■ Applications
• Battery power supply for portable equipment

 

Intersil
Intersil
Description : Advanced Dual PWM and Dual Linear power control

Advanced Dual PWM and Dual Linear power control

The HIP6019 provides the power control and protection for four output voltages in High-performance microprocessor and computer applications. The IC integrates two PWM controllers, a linear regulator and a linear controller as well as the monitoring and protection functions into a single 28 lead SOIC package. One PWM controller regulates the microprocessor core voltage with a synchronous-rectified buck converter, while the second PWM controller supplies the computer’s 3.3V power with a standard buck converter. The linear controller regulates power for the GTL bus and the linear regulator provides power for the clock driver circuits.

Features
• Provides 4 Regulated voltages
    - Microprocessor Core, I/O, Clock Chip and GTL Bus
• Drives N-Channel MOSFETs
• Operates from +5V and +12V Inputs
• Simple Single-Loop control Designs
    - voltage-Mode PWM control
• Fast Transient Response
    - High-Bandwidth Error Amplifiers
    - Full 0% to 100% Duty Ratios
• Excellent Output voltage Regulation
    - Core PWM Output: ±1% Over Temperature
    - I/O PWM Output: ±2% Over Temperature
    - Other Outputs: ±2.5% Over Temperature
• TTL-Compatible 5-Bit Digital-to-Analog Core Output voltage Selection
    - Wide Range . . . . . . . . . . . . . . . . . . . 1.8VDC to 3.5VDC
    - 0.1V Steps . . . . . . . . . . . . . . . . . . . . 2.1VDC to 3.5VDC
    - 0.05V Steps . . . . . . . . . . . . . . . . . . 1.8VDC to 2.05VDC
power-Good Output voltage Monitor
• Microprocessor Core voltage Protection Against Shorted MOSFET
• Over-voltage and Over-Current Fault Monitors
    - Does Not Require Extra Current Sensing Element, Uses MOSFET’s rDS(ON)
• Small Converter Size
    - Constant Frequency Operation
    - 200kHz Free-Running Oscillator; Programmable from 50kHz to 1MHz

Applications
• Full Motherboard power Regulation for Computers
• Low-voltage Distributed power Supplies

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