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100-220vac input/5vdc (500ma) output isolated ac/dc converter bp5720-5 data sheet external component specifications c1: output smoothing capacitor 0.1 f/275vac safety regulation c2: noise reduction capacitor 0.1 f/275vac safety regulation c3: output smoothing capacitor 22 f/450v limits ripple current 100marms or higher c4: input smoothing capacitor 2200pf/400v or higher c5: noise reduction capacitor 2200pf safety regulation c6: output smoothing capacitor 470 f/10v low impedance part c7: noise reduction capacitor 630v or higher 0.1 to 0.22f use if necessary d1: noise reduction diode 800v/0.5a d2: diode bridge 800v/1a d3: rectifier diode 60v/2a r1: resistor 100k ?5% 2w 300v or higher r2: noise reduction resistor 1w or higher 10 to 22 ? use if necessary r3,4: output voltage adjustment resistor by changing r3, r4, it is possible to adjust output voltage. refer to the output voltage adjustment notes at right l31: line filter 10mh 0.2arms or higher safety regulation t1: switching transformer ensure that it complies with safety regulations f1: fuse be sure to use this for safety. f2: fuse be sure to use this for safety. znr31 : varistor a varistor is required to protect against lightning surges and static electricity. 390v safety regulation np- nc nc nd+ vi(-) gnd1 gnd2 vadj vo pin no. name 1 function connect the negative side of the primary coil of the external transformer. 7 8 9 10 11 12 skip skip end of secondary output smoothing capacitor terminal. secondary 5v output gnd terminal. secondary output voltage fine-tunning terminal. resistor has to be inserted between gnd2 or vo terminals. this is the secondary side 5v output voltage control terminal. insert the output smoothing capacitor 470 f between gnd. 5 nc pin 2 nc pin 3 skip 4 this is connected to the plus side of the base coil wire of the external transformer. 6 this is the primary side input minus terminal. parameter symbol limits unit conditions 1-pin input voltage v d parameter symbol output voltage min. ty p. max. unit conditions vo 4.75 5.0 5.25 v input voltage external component layout please verify operation and characteristics in the customer's circuit before actual usage. ensure that the load current does not exceed the maximum rating. vi 113 141 374 v ? 1 line regulation ?vr ? 10 100 mv power conversion efficiency 70 78 ? % 500 v 4-pin input voltage vnd vi +30 / ?5 v 1-pin input current i d 250 ma maximum power withstanding voltage po 2.5 w refer to the derating curve kvrms ambient temperature + the module self-heating tcmax 1 sec (primary - secondary : 1 - 6pin, 9 - 12pin short) allowable maximum surface temperature tcmax 105 2.5 c operating temperature range topr ?25 to +80 c storage temperature range tstg ?25 to +105 c output current io 0 ? 500 ma vi=141v load regulation ?vi ? 15 100 mv io=0ma to 500ma vi=113v to 374v io=500ma output ripple voltage ? ? 100 250 mvp-p ?1: measured peak-to-peak, ripple current bandwidth (spike noise not included). <> adjust the output voltage by varying r3 and r4. derating curve (unless otherwise noted, vi=141v, io=500ma,ta=25 c) (vo=5v, r3/r4=open) dimensions (unit : mm) conversion efficiency output current io(ma) conversion efficiency (%) 0 0 20 40 60 80 100 250 300 350 400 450 50 100 150 100 500 (vi=311v, ta=25 c) load regulation output current io(ma) output voltage vo(v) 0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 300 400 500 100 200 600 700 800 (vi=311v, ta=25 c) maximum io=500ma (1)output voltage range: 4.0 to 6.0v (2)output voltage equations vo<5v, r3=(30.33vo ?37.2) / (5? vo)k? r4=open vo=5v, r3, r4=open vo>5v, r3=open r4=37.6092/ (vo-5)k ? example) in case of vo=5.3v vo>5v , r4=37.6092 / (5.3-5 )k ? =125.364k ? thus, r3=open r4=120k ? (vo=5.313v) an excessively large capacitance at c4 may cause the output to become inactive. therefore, a capacitance between 470 f to 2200 f is recommended, with a risetime of 10ms or less. dc coltage after sousing overcurrent (reset type) protection circuit is built in, preventing damage from occurring due to unexpected conditions 35.5max. 10.0max. 20.5max. marking side 4.01.0 p=2.540.2 0.50.1 1.30.2 1 3.3max. 2 4 5 6 10 11 12 9 0.250.05 4.4max. 5.6max. 2.54x11=27.94 typ. marking side ambient temperature ta( c ) output current (ma) operation range operation range 600 500 400 300 200 100 0 -30-20-10 0 10 20 30 40 50 60 70 80 90 d3 znr31 use a fuse for safety l31 c1 c5 c4 c7 d1 + c3 f2 + c6 f1 c2 d2 r4 r3 r1 r2 1 4 6 10 9 12 1 1 vo gnd2 gnd1 50hz/60hz ac100v to 200v bp5720 -5 absolute maximum ratings electrical characteristics application circuit operation notes 100-220vac input/3.3vdc (3a) output isolated ac/dc converter bp5723-33 data sheet operation notes an excessively large capacitance at c2 may cause the output to become inactive. therefore, a capacitance between 500 to 2200 f is recommended, with a rise time of 10us or less. the capacitance of c3 should be 10 f, since an excessively small value will result in malfunction. the activation time is defined as : t(s)=r2*c3 ln[1-17/(vi-30 a*r2)], where vi is the dc voltage after smoothing. the resistance of r2 should be 1.5m ? , since an excessively small value will result in malfunction. overcurrent (reset type) and overvoltage (latch type) protection circuits are built in, preventing damage from occurring due to unexpected conditions. the overvoltage protection circuit shuts down operation once v dd exceeds 20v. in order to reset the input capacitor c4 must be discharged and the power turned back on. maximum io=1000ma absolute maximum ratings electrical characteristics sample application circuit parameter symbol limits unit conditions 11 pin input voltage v d parameter symbol pin 11 input voltage v d min. ? typ. ? max. 650 unit v conditions vi=141v io=3a vi=141v, io=3a vi=141v, io=2a operating power voltage(pin 7) v dd 8.5 14 20 v vi=141v io=1a *1 vi=141v, io=2a *2 line regulation ?vr ? 10 200 mv vi=113 to 374v dc io=2a power conversion efficiency 70 79 ? % 700 v 7 pin input voltage v dd 25 v 11 pin input currents i d 500 ma 8 pin input currents i dd 10 ma maximum output power po 10 w withstand voltage vi 3 kw 1 sec (primary - secondary) peak contain a self-fever permission temperature tcmax 105 c operating temperature range topr ?25 to +80 c storage temperature range tstg ?30 to +105 c rated output voltage vo 3.13 3.3 3.47 v rated output current io 0 ? 3.0 a refer to derating curve load regulation ?vi ? 10 200 mv vi=141v, io=0 to 2a output ripple voltage ? ? 100 500 mvpp *1: operation start voltage becomes 16 to 18 v. *2: pulse noise does not include it. pin no. name 1 vo terminal function secondary output voltage control terminals. 11 v d it is the drain terminal of inclusion fet. 8 vs triggering terminal. 2 gnd gnd terminals for the secondary side output. 6 vi( ?) the primary side input minus terminal. 7 v dd the power supply terminal of an inside circuit. 9 nc nc pin. external component specifications c1: input capacitor c2a: output capacitor c2b: output capacitor c3: output capacitor c4: noise removal capacitor c5: noise removal capacitor c6: noise removal capacitor 33f / 450v 560f / 10v high polymer aluminum solid capacitor 560f / 10v high polymer aluminum solid capacitor 10 f / 50v low impedance type 4700pf / 1kv use if necessary use if necessary ? 30v / 15a 1kv / 1a 80v / 0.13a 47k? 5% 3w dc300v or greater 1.5m? 5% 0.25w 750v or greater custom be sure to use a fuse for the safety. a varistor is required to protect against lightning surges and static electricity. d1: diode bridge d2: shottkey diode d3: rectification diode d4: rectification diode r1: resistance r2: resistance t1: switching transformer f1: fuse znr: varistor dimensions (unit : mm ) derating curve switching frequency operation range ambient temperature ta( c ) output power (w) 6 4 2 0 12 10 8 -30-20-10 0 10 20 30 40 50 60 70 80 90 output current io (ma) switching frequency fsw (khz) 70 60 50 40 30 20 10 0 0 500 1000 1500 2000 2500 3000 conversion efficiency output current io (ma) conversion efficiency (%) 0 0 10 20 30 40 50 60 70 80 90 500 1000 1500 2000 2500 3000 load regulation output current io (ma) output voltage vo (v) 0 0 0.5 1 1.5 2 2.5 3 3.5 4 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 vi=141v vi=311v vi=141v vi=311v vi=141v vi=311v 6 9 8 11 7 2 1 c2a c6 t1 d2 f1 d1 c1 c5znr vi r2 c4 d3 r1 d4 c3 c2b io=3.0a vo=3.3v + + ? + ? + ? ? bp5723-33 10.9max. marking side 3.7max. 0.250.05 7.2max. 119876 2 p=2.540.2 2.54?10=25.4(typ) 38.5max 3.3max. 0.50.1 0.41.0 21.5max. 1.30.2 1 be sure to use fuse for safety. 1/1 2010.01 - rev.a www.rohm.com ?2010 rohm co., ltd. all rights reserved.

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