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PT2210 Datasheet Preview

PT2210 Datasheet

Monolithic AC-DC PWM Controller

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PT2210
Monolithic AC-DC PWM Controller
GENERAL DESCRIPTION
The PT2210 is a monolithic current mode PWM
controller for AC-DC applications. The device
integrates a power switch and controlling circuits
providing low standby power and cost effective
solution for the AC-DC converter applications.
The PT2210 operates at fixed 65KHz. Under no load or
light load conditions, switching frequency is reduced to
minimize switching loss. Low standby power and high
efficiency is thus achieved. The built in LEB on the
current sense input removes the signal glitches due to
snubber circuit diode reverse recovery and thus reduces
the external component count and thus the system cost
in the design.
A complete set protection is implemented in the
PT2210 including cycle-by-cycle current limiting
(OCP), over load protection (OLP), VDD over voltage
and under voltage lockout (UVLO). The PT2210 also
features latched shut down including programmable
OTP and programmable OVP protection. By limiting
the minimum frequency above 22 kHz, the PT2210
based system eliminates the potential audible noise
when the system works under light or no load
conditions.
Excellent EMI performance is achieved with PowTech
proprietary frequency Jittering technique
The PT2210 is available in a DIP-8 package.
FEATURES
Integrates 2A/600V power switch
Frequency jittering for improved EMI
Green-Mode PWM for improved efficiency and
minimum standby power design
Fixed 65KHz PWM frequency
Built in 4mS soft start
Low start up current 20uA ( Typ. 3uA) and low
operation current (Typ. 1.0mA)
Current mode operation
Leading-edge blanking on current sense input
Constant output power limit for universal AC
input
Built-in power limit control (OLP)
Cycle-by-cycle current limiting (OCP)
Under voltage lockout (UVLO)
Latched programmable OTP
Latched programmable OVP
APPLICATIONS
Offline AC/DC flyback converters for
Power Adapter
Open-frame SMPS
Battery Charger Adapter
ORDERING INFORMATION
PACKAGE
DIP-8, Pb free
Note:
TEMPERATURE
RANGE
-40to 85
ORDERING PART
NUMBER
PT2210EDIH
TRANSPORT
MEDIA
50/Tube
MARKING
PT2210
xxxxxX
xxxxxX
Assembly Factory Code
Lot Number
China Resources Powtech (Shanghai) Limited
PT2210_DS Rev EN_1.0
WWW.CRPOWTECH.COM
Page 1




PowTech

PT2210 Datasheet Preview

PT2210 Datasheet

Monolithic AC-DC PWM Controller

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TYPICAL APPLICATIONS
PT2210
Monolithic AC-DC PWM Controller
AC in
EMI
Filter
BD
C1 D1
R2 C2
R4 C3
D3
C4 C5DC out
R1
D2 T1
C1
R3
U1
SENSE DRAIN
VDD
DRAIN
GND
FB
NC
RT
RNTC
R5
U2
C6
C7 R8
U3
TL431
R6
R7
PIN ASSIGNMENT
SENSE DRAIN
VDD
DRAIN
GND
NC
FB RT
DIP-8
PIN DESCRIPTIONS
NAMES
SENSE
VDD
GND
FB
RT
NC
DRAIN
PIN No.
1
2
3
4
5
6
7,8
DESCRIPTION
Current sense input pin. Connected to MOSFET current sensing resistor node.
DC power supply pin.
Ground
Feedback input pin. PWM duty cycle is determined by voltage level into this
pin and SENSE pin voltage level.
Multi-function pin. Connects a NTC resistor between RT and GND for
ambient temperature OTP or connect a Zener diode to VDD for over voltage
protection.
Not connection
Internal power switch drain
China Resources Powtech (Shanghai) Limited
PT2210_DS Rev EN_1.0
WWW.CRPOWTECH.COM
Page 2


Part Number PT2210
Description Monolithic AC-DC PWM Controller
Maker PowTech
Total Page 2 Pages
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