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MCZ5203SE 데이터시트 PDF




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부품번호 MCZ5203SE 기능
기능 LLC Current Resonant Mode Controller
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MCZ5203SE 데이터시트, 핀배열, 회로
MCZ5203SE APPLICATION NOTE
Confidential
MAR, 2012 Ver1.0
SHINDENGEN
ELECTRIC MFG.CO.,LTD
-1-
Free Datasheet http://www.datasheet4u.com/




MCZ5203SE pdf, 반도체, 판매, 대치품
Confidential
1 General description
MCZ5203 is an advanced symmetric LLC current resonant mode controller for bridge converter.
Bulit-in high voltage direct gate drivers, control circuit and optimized protections allow
simplified and space/cost-saving design of power supplies for :
Large screen flat panel TVs (PDP / LCD ) PSU
Laser printer PSU
High power adapters
1.1 Features
1. Robust 600V gate driver directly drives high side Switch.
2. Optimized gate drive capability minimizes the number of components for gate drive circuit.
3. Optimized protective functions (OCP/burst/Timer delayed latch/Thermal) for LLC converter
4. Advanced ZVS boundary chaser (capacitive mode protection) eliminates below resonant
(capacitive di/dt) operation.
5. OCP operates by detecting peak primary current with 0.345V / threshold.
6. Vcc supplies up to 35V with 13.5V/8.4V UVLO
7. Built-in voltage regulator of 10V for gate driver
8. Independent high side / low side Gate driver UVLO with hysterisis
9. Adjustable soft starting function
10. Anti-di/dt startup function eliminates improper startup of Non ZVS operation
11. Optimized brown out protection
1.2 Block diagram SOP22
SHINDENGEN
ELECTRIC MFG.CO.,LTD
-4-
Free Datasheet http://www.datasheet4u.com/

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MCZ5203SE 전자부품, 판매, 대치품
2 Symmetric LLC converter Operating Description
Confidential
2.1 Features
Symmetric LLC resonant converter application is expanding widely due to its extremely high power
conversion efficiency and low noise characteristics. It’s resonant tank consists of L/L/C connected
in series. ZVS/ZCS operation minimizes switching loss and voltage spike.
a) The voltage applied to main switch is clamped to input voltage (Vbulk), consequently no
spike voltage is generated.
b) Main switch turn-off current can be kept to constant and low level independent of load
condition.
c) Transformer is excited symmetrically, thus magnetics size can be minimized.
d) Sinusoidal resonant current waveform results in extremely low EMI characteristics.
e) Output rectified current is also partially sinusoidal, and Trr loss and switching noise can be
minimized.
f) The voltage applied to output diode is clamped to the output voltage (or x2) independent of
load condition or input voltage.
g) Excellent cross regulation characteristics for multiple output converters due to symmetric
bridge operation.
h) No requirement of auxiliary 3rd winding helps to optimize resonant condition and transformer
design
2.2 Fundamental circuitrySEPP
Q1
Vbulk
Q2
D1
Cp1
Lr
D2
Cp2 Lm
RL
Cr
Lr :1st resonant inductance
Lm :2nd resonant inductance
(magnetizing inductance)
Cr :resonant capacitance
Cp1/2 :ZVS resonant capacitance
Q1/Q2 :Main switch
D1/D2 :Commutating diode
RL :Equivalent Load resistance
Fig.1 LLC configuration
Fig.2 simplified dc/dc converter
2.3 Operating waveform example
Output ripple voltage(Vo)
Q2 Idrain
(Id(2)
Q2 Vds
(Vds2)
Fig.3 Vds / Idrain / Vo ripple
Fig.4 Zoom of turn off period
SHINDENGEN
ELECTRIC MFG.CO.,LTD
-7-
Free Datasheet http://www.datasheet4u.com/

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관련 데이터시트

부품번호상세설명 및 기능제조사
MCZ5203SE

LLC Current Resonant Mode Controller

Shindengen
Shindengen

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