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C2161PX2 PDF даташит

Спецификация C2161PX2 изготовлена ​​​​«Cambridge Semiconductor» и имеет функцию, называемую «Primary Sensing SMPS Controller».

Детали детали

Номер произв C2161PX2
Описание Primary Sensing SMPS Controller
Производители Cambridge Semiconductor
логотип Cambridge Semiconductor логотип 

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C2161PX2 Даташит, Описание, Даташиты
C2161PX2 and C2162PX2 Datasheet
Primary Sensing SMPS Controller For Offline Applications
ADVANTAGES
Low cost bipolar primary switch
Tight tolerance CV/CC operation
Low component count
High efficiency (Energy Star 2.0 compliance with margin)
< 30 mW no-load power consumption (Five star rating)
Programmable maximum switching frequency
Programmable output cable compensation up to 10%
C2161PX2
C2162PX2
SOT23-6
FEATURES
Advanced primary sensing controller achieves true CV/CC output characteristic without opto-coupler
Full featured protection for over-temperature, input over-voltage, input under-voltage, output short-circuit
Advanced PFM/PWM control and quasi-resonant switching for increased efficiency
Switching timing jitter spreads RF spectral emissions, eases EMC compliance
SOT23-6 package
APPLICATIONS
Universal input mobile phone and USB chargers.
Universal standby and auxiliary power supplies up to 8 W using C2162PX2 (up to 4 W using C2161PX2).
Figure 1: Typical Application Circuit
Preliminary
© Cambridge Semiconductor Ltd 2009
Page 1
DS-2918-0906
12-Jun-2009









No Preview Available !

C2161PX2 Даташит, Описание, Даташиты
C2161PX2 and C2162PX2 Datasheet
Primary Sensing SMPS Controller For Offline Applications
BLOCK DIAGRAM
VDD
Startup
Comparator
Voltage
Sensing
Voltage
Regulator
Digital &
Analogue
Control
Oscillator
Current
Sensing
FB
Emitter
Driver
ED
GND
RC
CS
Figure 2: C2161PX2 and C2162PX2 Block Diagram
PIN DEFINITIONS
SOT23-6
CS 1
GND 2
ED 3
6 FB
5 VDD
4 RC
Figure 3: C2161PX2 and C2162PX2 Pin Assignment
VDD Pin
The VDD pin supplies power to the chip and dictates the operating mode (Run or Sleep).
FB Pin
The FB pin is used to sense the transformer winding voltage waveform, scaled and AC-coupled by an
external RC network (Rfb1, Rfb2 and Cfb in Figure 4).
CS Pin
The CS pin senses the primary switch current via the current sensing resistor (Rcs in Figure 4).
RC Pin
The RC timing network connected to the RC pin (shown as Rosc, Cosc in Figure 4) defines both the required
maximum switching frequency FMAX and the cable compensation.
ED Pin
The ED pin is connected to the emitter of the external bipolar junction transistor (Q1 in Figure 4).
GND Pin
The GND pin provides the ground reference.
Preliminary
© Cambridge Semiconductor Ltd 2009
Page 2
DS-2918-0906
12-Jun-2009









No Preview Available !

C2161PX2 Даташит, Описание, Даташиты
C2161PX2 and C2162PX2 Datasheet
Primary Sensing SMPS Controller For Offline Applications
TYPICAL APPLICATION
The C2161PX2 and C2162PX2 controllers are intended primarily for 5 V cellular telephone chargers meeting
the 5-star energy saving requirements, but are equally applicable to other off-line applications up to 8 W
requiring low standby power and high efficiency. A high degree of configurability allows a wide range of
applications to be met at minimum cost. A typical application circuit is shown in Figure 4.
Figure 4: Universal Input 4 W Charger
Typical 4 W Charger Performance
Input
Output
Cable compensation
Average Typical Efficiency (including cable)
No-load input power consumption
Over-temperature protection (OTP)
Start-up time
Short-circuit input power
VIN
VOUTNOM
IOUTNOM
GCAB
KEFF
PINSTBY
TSH
tSTART
PINSC
85 - 265 V ac
5 V dc (± 5%)
800mA dc (-0/+10%)
8%
> 70%
< 30 mW
115 ºC
<1s
<1W
Preliminary
© Cambridge Semiconductor Ltd 2009
Page 3
DS-2918-0906
12-Jun-2009










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Номер в каталогеОписаниеПроизводители
C2161PX2Primary Sensing SMPS ControllerCambridge Semiconductor
Cambridge Semiconductor

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