G1135P.pdf 데이터시트 (총 10 페이지) - 파일 다운로드 G1135P 데이타시트 다운로드

No Preview Available !

G1135P
High Precision CC/CV Primary-Side PWM Power Switch
1. General Description
G1135P is a high performance offline PWM
Power switch for low power AC/DC charger and
adaptor applications up to 12W.It operates in
primary-side regulation. Consequently,
opto-coupler and TL431 could be eliminated.
Proprietary Constant Voltage (CV) and Constant
Current (CC) control is integrated as shown In
the Fig.1. In CC control,the current and output
power setting can be adjusted externally by the
mseunltsi-emroedsiestoopr eRraS taiotnCsSarpeinu. tIinlizCedV
control,
to achieve
high performance and high efficiency.
In addition, good load regulation is achieved by
the built-in cable drop compensation. Device
operates in PFM in CC mode as well at large load
condition and it operates in PWM with frequency
reduction at light/medium load.
G1135P offers power on soft start control and
protection coverage with auto-recovery features
including Cycle-by-Cycle current limiting, VDD
OVP, VDD clamp and UVLO. Excellent EMI
performance is achieved with frequency jitter
technique.
Fig.1. Typical CC/CV Curve
ANALOG PWM IC
Features
5% CV and CC Regulation at Universal
AC input
Primary-side Regulation Without TL431
and Opto-coupler
Built-in High-Voltage Power MOS
Programmable CV and CC Regulation
Adjustable Constant Current and Output
Power Setting
Built-in Secondary Constant Current
Control with Primary Side Feedback
Built-in Primary winding inductance
compensation
Programmable cable drop compensation
Built-in Leading Edge Blanking (LEB)
Power on Soft-start
Built-in adaptive current peak regulation
Cycle-by-Cycle Current Limiting
VDD Under Voltage Lockout with
Hysteresis (UVLO)
VDD OVP and VDD Clamp
Pb-free DIP-7
Applications
Cell Phone Charger
Digital Cameras Charger
LED Driver
Small Power Adaptor
Auxiliary Power for PC, TV etc.
Linear Regulator/RCC Replacement
G1135P is offered in DIP-7 package.
Global Semiconductor Co., LTD.
1 of 10

No Preview Available !

G1135P
High Precision CC/CV Primary-Side PWM Power Switch
2. Products Information
2.1 Pin configuration
G1135P
Fig.2. G1135P Pin Configuration
Pin Name
VDD
COMP
INV
CS
DRAIN
GND
I/O
P Power Supply
Description
I Loop Compensation for CV Stability
The Voltage feedback from auxiliary winding. Connected to
I
resistor divider from auxiliary winding reflecting output
voltage. PWM duty cycle is determined by EA output and
current sense signal at pin 4.
I
Current sense input. Connected to primary current sensing
resistor.
O
HV MOSFET Drain Pin. The Drain pin is connected to the
primary lead of the transformer
P Ground
2.2 Output Power Table
Product
85~264VAC
Adapter1
Notes:
G1135P
12W
1. Maximum practical continuous power in an Adapter design with sufficient drain pattern as a heat sink, at
50ambient. Higher output power is possible with extra added heat sink or air circulation to reduce
thermal resistance.
Rev. 1.0
2 of 10

No Preview Available !

G1135P
High Precision CC/CV Primary-Side PWM Power Switch
2.3 Block diagram
Fig.3. G1135P Block Diagram
3. Absolute Maximum Ratings
Description
VDD Voltage
HV MOSFET Drain Voltage
VDD Zener Clamp Continuous Current
COMP Voltage
CS Input Voltage
INV Input Voltage
Max Operating Junction Temperature TJ
Min/Max Storage Temperature Tstg
Lead Temperature (Soldering, 10secs)
Package Dissipation Rating RθJA 2
Absolute Maximum Ratings
-0.3 to VDD_clamp
-0.3 to BVdss
10 mA
-0.3 to 7V
-0.3 to 7V
-0.3 to 7V
150
-55 to 150
260
75/W
Notes:
1. Stress beyond those listed under “absolute maximum ratings” may cause permanent damage to the device.
Exposure to absolute maximum-rated conditions for extended periods may affect device reliability
2. Drain Pin Connected to 100mm2 PCB copper clad.
www.globalsemi-group.com
3 of 10

No Preview Available !

G1135P
High Precision CC/CV Primary-Side PWM Power Switch
4. Electrical Characteristics
(TA = 25, VDD=16V, unless otherwise noted)
Symbol
Parameter
Test Conditions
Min Typ Max Unit
Supply Voltage
IVDD_ST
Standby current
IVDD_OP
UVLO_ON
UVLO_OFF
OVP
VDD_Clamp
Operation Current
VDD Under Voltage
Lockout Enter
VDD Under Voltage
Lockout Exit
Over voltage protection
voltage
Maximum VDD
operation voltage
Current Sense
TLEB
VTH_OC
ZSENSE_IN
T_SS
LEB time
Over current threshold
Input Impedance
Soft start time
VDD=13V
INV=2V,CS=0V,
VDD =20V
VDD falling
VDD rising
Ramp up VDD until
gate clock is off
IDD=10mA
--
--
--
--
-- 3.5 20.0
-- 0.9 1.5
8.0 9.0 10.0
13.5 14.5 16.0
27.0 28.0 29.0
32.0 33.5 35.0
μA
mA
V
V
V
V
-- 500 --
980 1000 1020
100 --
--
-- 10 --
ns
mV
K
mS
Frequency Section
Freq_Max1
System Nominal switch
frequency
Freq_startup
--
f/Freq
Frequency jitter range
--
INV=0V,Comp=5V
--
55 60 65 KHz
-- 22 -- KHz
-- +/-5 --
%
Error Amplifier Section
Vref_EA
Reference voltage for
EA
Gain
DC gain of the EA
ICOMP_Max
Max. Cable
compensation current
Power MOS Section
BVdss
MOSFET Drain-Source
Breakdown Voltage
Rdson
On Resistance
--
--
INV=2V,COMP=0V
--
--
1.98 2.00 2.02
-- 60 --
-- 42 --
V
dB
μA
650 --
-- 4.4
--
--
V
Notes:
1. Freq_Max indicates IC internal maximum clock frequency. In system application, the maximum operation
frequency of 60KHz nominal occurs at maximum output power or the transition point from CV to CC.
Rev. 1.0
4 of 10

No Preview Available !

G1135P
High Precision CC/CV Primary-Side PWM Power Switch
5. CHARACTERIZATION
www.globalsemi-group.com
5 of 10