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THX203H の電気的特性と機能

THX203HのメーカーはETCです、この部品の機能は「Switching Power Controller IC」です。


製品の詳細 ( Datasheet PDF )

部品番号 THX203H
部品説明 Switching Power Controller IC
メーカ ETC
ロゴ ETC ロゴ 




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THX203H Datasheet, THX203H PDF,ピン配置, 機能
THX203H
Switching Power Controller IC
Contents
Introduction, characteristics and application field ···································································· 3
Reference frame of interior circuit···························································································· 4
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Description of pinsfunction ···································································································· 4
Ultimate parameters ················································································································· 5
Recommended working condition ···························································································· 5
Electric parameters ··················································································································· 5
Principal Discription················································································································· 7
Definition of Electric Parameters ····························································································· 8
Application information ··········································································································· 9
Typical application circuit ······································································································ 11
Components Listing ··············································································································· 12
Making coils for transformer ································································································ 13
Test data ································································································································· 14
Wave-form of main experimental units ·················································································· 15
Parameters of thermal resistance and junction temperature ···················································· 19
Dimensional chart of encapsulation························································································ 20

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THX203H pdf, ピン配列
THX203H
PWM Controller of High-performance Current Mode
Characteristics
z Set-in high-voltage power switch tube of 700V and few peripheral components
z With the modulation of lock pulse width, the testing is according to the pulse limit
current.
z With the function of output frequency reduction, the non-output power consumption can
be less than 0.3W.
z Inner-built ramp and anti-feedback compensation function
z The independent upper-limit current testing controller deals with over-current and
over-load of the controller real-timely.
www.DataSheet4U.czom The period emission pole is turned off and it outputs by deflected voltage, and the
pressure resistance of the power tube is improved.
z Set-in current limit resistance with temperature compensation, which makes the current
limit precise
z Set-in heat protection circuit
z Startup is accomplished with the magnification function of the switch power tube, and
the power consumption of startup resistance is reduced more than10 times.
z Few peripheral components
z Low startup and operating current
z VCC over-voltage automatic limit
z Continuous wide-voltage output power reaches 12W, and the output power of peak value
arrives at 18W.
Applied Field
z Adaptor (for example, travel charger, out power station)
z Open Frame (for example, DVD, DVB)
Reference Frame of Interior Circuit
Figure 1. Frame of Interior Current
-3-


3Pages


THX203H 電子部品, 半導体
THX203H
PWM Controller of High-performance Current Mode
Current sampling
Item Testing condition
Current sampling
limit
upper limit currentRS=1O
prevention
Power
supply
rejection ratio
transmission delay
Modulation of pulse width
www.DataSheet4UI.tceomm
Testing condition
Maximum duty cycle
Minimum duty cycle
Power current
Item Testing condition
Startup acceptance
current
Startup static current
Static current
Vcc=8V
Startup voltage
Close voltage of
oscillator
Restart voltage
Over-voltage limit
margin
Minimum Typical Maximum Unit
0.54 0.58 0.62 V
0.54 0.27 0.62 A
-
60 70
dB
-
150 250
ns
Minimum Typical Maximum Unit
53 57 61 %
-
- 3.5
%
Minimum Typical Maximum Unit
1.6 2.0 2.4 mA
-
55 80
μA
- 2.8 -
mA
8.6 8.8 9.0 V
4.0 4.3 4.5 V
- 3.7 -
V
9.2
9.6 10.0
V
Description of the Principle
z During start-up phase, VR is closed when electrified; FB pull-up power source is closed,
the start-up current is input from power tube to VCC through OE; OB controls the base
current of power tube and limits the current of power tube collector (namely, THX203H
starts the acceptance current), accordingly, the security of the power tube is ensured;
when VCC voltage goes up to 8.8V, the start-up phase is ended, and it comes into the
normal phase.
z During normal phase, VCC voltage shall keep at 4.8~9.0V, VR outputs 2.5V benchmark;
FB pull-up current source starts up; the oscillator output OSC1 decides the maximum
duty cycle, output OSC2 tries to touch off the power supply to enter open cycle to enter
the open cycle, and shield flashing peak current of the power tube ; if FB is less than
1.8V (about between 1.2-1.8V), the cycle of the oscillator will increase with it, the less
FB is, the wider the cycle of the oscillator is, until the oscillation stops (This
characteristic reduces the standby power consumption of the switching power.) ; if the
peripheral feedback tries to make VCC more than 9.6V, the in-circuit is fed back to FB
and makes VCC stabilize the voltage at 9.6V (According to this characteristic, we can
may not adopt peripheral feedback circuit, and stabilize the output voltage by in-circuit,
but the precision of stabilizing voltage is low); During the open cycle, OB supplies base
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6 Page



ページ 合計 : 21 ページ
 
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共有リンク

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部品番号部品説明メーカ
THX203

High Performance Current Mode PWM Switching Power Supply

AMS
AMS
THX203H

Switching power supply controller IC

TongHuaXin
TongHuaXin
THX203H

Switching Power Controller IC

ETC
ETC
THX203H

High Performance Current Mode PWM Switching Power Supply Controller

JINRUI TECHNOLOGIES
JINRUI TECHNOLOGIES


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