[introduction] REASUNOS(luck dark semiconductor) throw research and development through lasting, promote LLC application the technology, compositive control chip and power are changed, roll out RSC6218A WSOP-16 of new generation product successfully, continue develop of lucky dark LLC attacks plan, opportunity trend caters to policy of our country double carbon completely, electric character agrees with double code of EU2019/2020 of attestation of ERP of new edition of GB/T 17625.1-2022 of new edition GB and European Union, the product of the small-power in be only offers excellent program; The applied material that can distribute a canto to introduce new plan product continuously next and design example are shared.

One, RSC6218A of LED drive module

REASUNOS(luck dark semiconductor) throw research and development through lasting, promote LLC application the technology, compositive control chip and power are changed, roll out RSC6218A WSOP-16 of new generation product successfully, continue develop of lucky dark LLC attacks plan, opportunity trend caters to policy of our country double carbon completely, electric character agrees with double code of EU2019/2020 of attestation of ERP of new edition of GB/T 17625.1-2022 of new edition GB and European Union, the product of the small-power in be only offers excellent program; The applied material that can distribute a canto to introduce new plan product continuously next and design example share:

 

Interior of RSC6218A power module is compositive half bridge module and power change CS-CP-LLC power source module, continue tall PF of implementation of only course of direction of design of lucky dark theme shows plan of technology of soft switch of technology and LLC resonance without frequency: This model applies to 5-18W power paragraph; Have tall changeover efficiency (90%+) , tall PF(>0.96) , low THD(<10%) , miniaturization (10-25%) of contractible PCB area, the open that through optimizing product interior the design promotes product interior power parts of an apparatus and close performance, avoid interference happening, top job frequency amounts to 200KHZ, implementation WSOP-16 encloses give attention to two or morethings to come loose heat and miniaturization; And interior can set dead band time automatically, make plan reliable easy design.

The product can apply extensively at:

1. protects eye series lamps and lanterns: Wait like the classroom lamp, office lamp, desk lamp that shield an eye, wall lamp, reading room lamp;

2. lives in kind of lamps and lanterns: Wait like sitting room lamp, bedroom lamp, children room lamp, kitchen lamp, corridor lamp;

3. orbit kind lamps and lanterns: Subway illume, tall iron illume, tunnel lighting, station illume;

4. business illuminates kind of lamps and lanterns: Canister lamp, shoot the lamp, projectile lamp, bright change the lamp, explosion proof lamp to wait;

Plan rises to offer efficient, stable, grow the action of life.

2, product function frame

 

3, function of foot of IC each PIN explains

 

Ground of PIN1 PGND power, the S that interior is MOS of join low margin carries ground wire;

PIN2 NC

PIN3 Half bridge of HS MOS low margin leaks extremely PIN;

PIN4 Half bridge of HS MOS low margin leaks extremely PIN;

PIN5 Half bridge of HS MOS is tall PIN of Bian Yuan pole;

PIN6 Half bridge of HS MOS is tall PIN of Bian Yuan pole;

PIN7 NC

PIN8 Half bridge of HO MO Gao Bian leaks extremely;

PIN9 Half bridge of HO MOS Gao Bian leaks extremely;

Half bridge of PIN10 HB power source of drive high margin, a diode of the buy outside passing and capacitance composition cite return oneself, the open that is Gao Bian MOS offers n;

The input foot that PIN11 VIN high pressure starts, highest compression can amount to DC600V, the electric current that start is in 1.7mA, general application is electroanalysis from high pressure place string receive resistor of a 1206100K to bring PIN1, when whole annulus road has not been built, it is to rely on this power supply that makes a base to pass in-house join to PIN6VCC, after the starting voltage that charges VCC capacitance to chip slowly next, chip begins the work. After whole annulus road is built, VIN foot interior closes, VCC assists winding power supply to keep regular job through exterior transformer;

PIN12 VCC signal power source cites a base, 8-20V of working voltage limits, working electric current is in 0.8mA, static job electric current is 720uA;

PIN13 NC DT impending foot;

Feedback of PIN14 FB voltage is inputted, VFB center value is 1.2V, this function that cites a base basically is demarcate sky carry voltage most substantially, this chip sky carries protection to belong to belch mode, can reduce effectively record loss for nothing, can effect requirement accords with the requirement that is less than 0.5W easily;

PIN15 Signal of wave of sine of sampling of CS electric current inputs this PIN foot is the sine wave signal that the sampling of mutual inductance inductance in passing line gets Quan Bo, after through resistor changeover is voltage signal, input CS PIN foot, in-house join arrives pressure accuse an oscillator, the basis inputs incoming voltage amplitude size, and the frequency of sine wave, the MOS switch frequency that presses the square wave that accuses an oscillator to output correspondence to dominate LG and HG end, realize control of constant current adjustment;

PIN16 N of reference of AGND signal ground, main join VCC, the component ground wire of foot of FB corresponding PIN.

4, limits of set of parameter of crucial PIN foot

 

5, graph of representative application principle

Pay close attention to date of public of lucky dark semiconductor, share the design reference documentation of particular case continuously next, hand in hand each are companionate people those who realize GB/T17625.1-2022 of new edition GB is successful amount to mark, shorten for the engineer development cycle, let a factory carry the product that gets satisfaction, give a client a satisfactory exam paper, get the profit space of need.

 

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