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原边控制系列产品
原边控制芯片 | |||||||||||
Product Number | CV | CC | Drive Device | Max Oper. Frequency | Standby Power | Max Vdd | Freq. Shuffling | Inductance Compensation | Cable Compen-sation | Package | |
OB2520 | 5% | 6% | BJT | 100kHz | <30mW | 28V | Y | Y | Y | SOT23-6 | |
OB2520D | 5% | 6% | BJT | 100kHz | <150mW | 28V | Y | Y | Y | SOT23-6 | |
OB2520M | 5% | 6% | MOSFET | 100kHz | <200mW | 28V | Y | Y | Y | SOT23-6 | |
OB2532 | 5% | 5% | MOSFET | 55kHz | <200mW | 28V | Y | Y | Y | SOT23-6 | |
OB2531 | 5% | 5% | MOSFET | 90kHz | <200mW | 28V | Y | Y | Y | SOT23-6 | |
原边控制功率开关 | |||||||||||
Product Number | CV | CC | RDS(on) | Max Oper. Frequency | Standby Power | Max Vdd | Freq. Shuffling | Inductance Compensation | Cable Compen-sation | OLP/ SCP | Package |
OB2535/E | 5% | 10% | 12Ω | 55kHz | <200mW | 28V | Y | Y | A | Y | SOP8 |
OB2536/E | 5% | 10% | 12Ω | 55kHz | <200mW | 28V | Y | Y | A | Y | DIP8 |
OB2538/E | 5% | 10% | 5Ω | 55kHz | <200mW | 28V | Y | Y | A | Y | DIP8 |
OB2539 | 5% | 10% | 5Ω | 90kHz | <200mW | 28V | Y | Y | A | Y | DIP8 |
OB2211 | 20% | 25% | 12Ω | 50kHz | <300mW | 30V | Y | -- | A | -- | SOP8 |
OB2211H | 20% | 20% | 12Ω | 50kHz | <300mW | 30V | Y | -- | A | -- | SOP8 |
OB2212 | 20% | 20% | 12Ω | 50kHz | <300mW | 30V | Y | -- | A | -- | DIP8 |
OB2216 | 20% | 20% | 5Ω | 50kHz | <300mW | 30V | Y | -- | A | -- | DIP8 |
L:Latch; A:Auto-recovery
OB2520 Series
High Precision CC/CV Primary-side PWM Controller
OB2520 is a high performance offline PSR controller for low power AC/DC charger and adapter
applications. It operates in primary-side sensing and regulation. Consequently, opto-coupler and
TL431 could be eliminated.
Features:
◆ Ultra Low Standby Power
◆ ±5% Constant Voltage Regulation at Universal AC input
◆ High precision Constant Current Regulation at Universal AC input
◆ Primary-side Sensing and Regulation Without TL431 and Opto-coupler
◆ Programmable CV and CC Regulation
◆ Built-in Primary winding inductance compensation
◆ Programmable Cable Drop Compensation
◆ Driver BJT Switch
◆ Ultra Low Start-up Current (Typ. 1uA)
◆ VDD Over Voltage Protection
◆ Built-in Feedback Loop Open Protection
◆ Built-in Short Circuit Protection
◆ Built-in Leading Edge Blanking (LEB)
◆ Cycle-by-Cycle Current Limiting
◆ VDD Under Voltage Lockout with Hysteresis (UVLO)
◆ Available in SOT23-6 package, RoHS compliant
Applications:
◆ Cell Phone Charger
◆ PMP Adapter/Charger
◆ Small Power Adapter
◆ Auxiliary Power for PC, TV etc.
◆ Linear Regulator/RCC Replacement
Device | Driver Switch | Max Pout(W) |
(85~264V) | ||
OB2520 | BJT | 5 |
OB2520D | BJT | 5 |
OB2520M | MOSFET | 8 |
Typical Application:
OB253X Series
High Precision CC/CV PSR PWM Controller/Power Switch
OB2535 is a high performance offline PWM Power switch for low power AC/DC charger and
adapter applications. It can achieve ±5% precision constant voltage (CV) and high precision
constant current (CC). It operates in primary-side sensing and regulation. Consequently, opto-coupler and TL431 could be eliminated.
Features:
◆ ±5% constant voltage regulation at universal AC input
◆ Primary-side sensing and regulation without TL431 and opto-coupler
◆ Programmable CV and CC regulation
◆ Adjustable constant current and output power setting
◆ Built-in primary winding inductance compensation
◆ Programmable cable drop compensation
◆ Power on soft-start
◆ Built-in leading edge blanking (LEB)
◆ Cycle-by-Cycle current limiting
◆ VDD under voltage lockout with hysteresis (UVLO)
◆ VDD OVP
◆ VDD clamp
◆ Available in SOP8 packages, RoHS compliant
Applications:
◆ CC/CV Battery Charger
◇ Cell/Cordless Phone Charger
◇ Digital Camera Charger
◇ PDA Charger
◆ Small Power Adapter
◆ Auxiliary Power for PC, TV etc.
◆ Linear Regulator/RCC Replacement
Device | MOSFET Rdson(ohm) | Package | Max Pout(W)note | Max Pout(W)(85~264V) | Frequency |
OB2531 | External | SOT23-6 | -- | -- | 95kHz |
OB2532 | External | SOT23-6 | -- | -- | 60kHz |
OB2535/E | 12 | SOP8 | 10 | 5 | 60kHz |
OB2536/E | 12 | DIP8 | 16 | 9 | 60kHz |
OB2538/E | 5 | DIP8 | 20 | 15 | 60kHz |
OB2539 | 5 | DIP8 | 18 | 13 | 95kHz |
Note: Maximum practical continuous power in an open frame design with sufficient drain
pattern as a heat sink, at 50°C ambient, 230Vac input.
Typical Application:
OB221X Series
Primary Side Regulation PWM Power Switch
OB221X series are offline PWM power switch ICs. They are designed for primary side regulation
with minimum overall system cost by removing X/Y caps, Photo-coupler and TL431. They include an internal error amplifier to delivery high performance CC/CV
control. OB2211/OB2212 is highly recommended for cost effective compact designs in low power
adapter and battery charger applications.
Features:
◆ Primary side sensing and regulation eliminates TL431 and photo-coupler
◆ External adjustable gate drive capability
◆ Enable no-X and no-Y system design
◆ Low system cost
◆ Built-in error amplifier for CV/CC operation
◆ External adjustable CC operation
◆ Low standby power
◆ Frequency shuffling reduces EMI
◆ Available in DIP8 and SOP8 packages, RoHS compliant
Applications:
◆ CC/CV Battery Charger
◇ Cell/Cordless Phone Charger
◇ Digital Camera Charger
◇ PDA Charger
◆ Small Power Adapter
◆ Auxiliary Power for PC, TV etc.
◆ Linear Regulator/RCC Replacement
Device | MOSFET Rdson(ohm) | Package | Max Pout(W)note | Max Pout(W)(85~264V) |
OB2211 | 12 | SOP8 | 7 | 4.5 |
OB2211H | 12 | SOP8 | 10 | 5 |
OB2212 | 12 | DIP8 | 16 | 9 |
OB2211 | 5 | DIP8 | 20 | 12 |
Note: Maximum practical continuous power in an open frame design with sufficient drain
pattern as a heat sink, at 50°C ambient, 230Vac input.
Typical Application:
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