SE100B qc2.0 interface module features ? fully supports quick charge 2.0 specification ? class a: 5 v, 9 v, and 12 v output voltage ? apple dcp support ? samsung dcp support ? bc1.2 dcp support ? usb battery charging sp ecification revision 1.2 compatible ? automatic usb dcp shorting d+ to d- line ? default 5 v mode operation ? very low power consumption ? less than 1 mw at 5 v output ? supports chinese communications industry standard yd/t 1591-2009 SE100B a utomatically detects whether a connected powered device (pd) is qc2.0 capable before enabling output voltage adjustment. if a pd that is not compliant to qc2.0 is detected the SE100B disables output voltage adjustment to ensu re safe operation with legacy 5 v only usb pds. general description SE100B is designed to support quickcharge qc 2.0 (qc2.0) specifications. at the same time, it also supports apple, samsung and bc1.2 dcp (dedicated charging port) compliant devices. it is a low-cost so lution to support qc2.0 functions, and various other dcp interfaces devices. SE100B incorporates all necessary functions to add qc2.0 capability to standard adaptor designs, portable battery designs, and car-charger designs. SE100B supports the full output voltage range of either class a or class b. optionally class b can be inhibited for protecting the battery charger from accidental damage. pin configuration applications ? adaptors for smart phones, tablets, netbooks, digital cameras, and bluetooth accessories ? portable battery packs supporting qc2.0 functions ? car cargers supporting qc2.0 functions ? other usb power output ports supporting qc2.0 functions rev1.0 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., ? www.seawardinc.com ? page 1 9/4/2012
SE100B qc2.0 interface module typical application pin description no. pin name pin function description 1 gnd ground 2 v1 open drain input of output voltage adjustment switch. active for 9 v, 12 v, and 20 v output setting. 3 v2 open drain input of output voltage adjustment switch. active for 12 v, and 20 v output setting. 4 v3 open drain input of output voltage adjustment switch. active for 20 v output setting. 5 d- usb d- data line input. 6 d+ usb d+ data line input. 7 r connected to internal band-gap reference. provides reference current through connected resistor. 8 bp connection point for an external bypass capacitor for the internally generated supply voltage. rev1.0 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., ? www.seawardinc.com ? page 2 9/4/2012
SE100B qc2.0 interface module functional block diagram absolute maximum ratings symbol parameter maximum units v bp bypass pin voltage 5.6 v v r reference pin voltage 5 v v v1/v2/v3 v1/v2/v3 pin voltage v bp +0.7v v v d+/d- d+/d- pin voltage 5 v i bp bypass pin current 15 ma i v1/v2/v3 v1/v2/v3 pin current 0.5 ma i d+/d - d+/d- pin current 1 ma rev1.0 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., ? www.seawardinc.com ? page 3 9/4/2012
rev1.0 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., ? www.seawardinc.com ? page 4 9/4/2012 SE100B qc2.0 interface module recommended operating conditions symbol parameter maximum units t j operating junction temperature -20 to 125 t a operating ambient temperature -20 to 85 t s storage temperature -65 to150 lead temperature (less than 15 seconds) 260 electrical characteristics vcc=5v tj=25 unless otherwise specified symbol parameter test conditions min typ max unit v bp bypass pin voltage 4 5 v v bp reset power-up reset threshold voltage 3.8 v i bpsc bypass pin source current v bp = 4.3 v, t j = 25 cn1 = n2 = n3 = off 140 a i bp(shunt) bypass pin shunt voltage i bp =3ma 5.0 5.3 5.6 v v r reference pin voltage 1.22 1.27 1.32 v v dat(ref) data detect voltage 0.325 v v sel(ref) output voltage selection reference 2 v v inh 12 v / 20 v output inhibit threshold v bp -0.8 v i dat(short) data lines short-circuit delay vout 0.8 v 18 s t glitch d+ high glitch filter time 1250 ms t glitch(v) change output voltage glitch filter time 32 ms r dm(dwn) d- pull-down resistance 19.53 k r ds(on)n1 switch n1 on-resistance i n1 =200 a 300 r ds(on)n2 switch n2 on-resistance i n2 =200 a 300 r ds(on)n3 switch n3 on-resistance i n3 =200 a 300 r ds(on)n4 switch n4 on-resistance i n4 =200 a 300 r dsn5 switch n5 on-resistance i n1 =200 a v d+ 3.6v 60
SE100B qc2.0 interface module typical performance characteristics ?d+,d- 0.6vd+ 0.6v 3.3vv1 ? d- 0.6v v1/v2 ?d+d- 0.6v;d+ 0.6 3.3vv1 ??d- 0.6 3.3v v1/v2/v3 rev1.0 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., ? www.seawardinc.com ? page 5 9/4/2012
SE100B qc2.0 interface module applications information SE100B is a low-cost usb high-voltage dedicated charging port interface ic for the quick charge 2.0 specification. it incorporates all necessary functions to add quick charge 2.0 capability to standard adaptors, car-chargers, and portable battery packs. SE100B also supports other solutions with traditional feedback schemes like opto-coupler and secondary reference regulator se431 as depicted in figure 1. figure 1. SE100B with traditional output regulation (cv only). SE100B supports the full output voltage range of quick charge 2.0 class a (5 v, 9 v, or 12 v) or class b (5 v, 9 v, 12 v, or 20 v). it automatically detects either quick charge 2.0 capable powered devices (pd) or legacy pds compliant with the usb battery charging specification revision 1.2 and only enables output voltage adjustment accordingly. shunt regulator the internal shunt regulator clamps the bypass pin at 6 v when current is provided through an external resistor (r bp in figure 1). this facilitates powering of SE100B externally over the wide power supply out put voltage range of 5 v to 20 v. recommended values are r bp = 4.7 k? and c bp = 220 nf. bypass pin undervoltage the bypass pin undervoltage circuitry resets the SE100B when the bypass pin voltage drops below 3.9 v. once the bypass pin voltage drops below 3.9 v it must rise back to 4 v to enable correct operation. reference input resister rref at the reference pin is connected to an internal band gap reference and provides an accurate reference current for internal timing circuits. the recommended value is rref = 127 k? . quick charge 2.0 interface at power-up SE100B turns on switch n5 (see figure 3) in 20 ms or le ss after the bypass pin voltage has reached 4 v. switch n4 and output switches n1 to n3 remain off. this sets the default 5 v output voltage level. with d+ and d- short-circuited the normal handshake between the ac-dc adapter (dcp) and powered devices (pd) as described in the usb battery charging specification 1.2 can co mmence. after switch n5 has been turned on SE100B starts monitoring the voltage level at d+. if it continuously stays rev1.0 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., ? www.seawardinc.com ? page 6 9/4/2012
SE100B qc2.0 interface module above v dat(ref) (typ. 0.325 v) and below v sel(ref) (typ. 2 v) for at least 1.25 seconds SE100B will enter quick charge 2.0 operation mode. if the voltage at d+ drops any time below 0.325 v SE100B resets the 1.25 seconds timer and stays in usb battery charging specification 1.2 compatibility mode with a default output voltage of 5 v. once SE100B has entered quick charge 2.0 operation mode switch n5 will be turned off. additionally switch n4 is turned on connecting a 19.53 k? pull-down resistor to d-. as soon as the voltage at d- has dropped low (<0.325 v) for at least 1 ms SE100B st arts accepting requests for different ac-dc adapter output voltages by means of applied voltage levels at data lines d+ and d- through the powered device. table 1 summarizes the output voltage lookup table, corresponding ac-dc adap ter output voltages and status of switches n1 to n3. for quick charge 2.0 class a support only, the v3 pin has to be connec ted to the bypass pin (directly or through a resistor up to 100 k ? ). this will inhibit any requests for setting a 20 v output. rdat(lkg) selection when usb cable is disconnected, the voltage level at d+ is pulled down by resistor r dat(lkg) (see figure 1). once it drops below 0.325 v SE100B will turn on switch n5 (thereby short-circuiting d+ and d-) and turns off switches n1 to n4. this sets the default output voltage of 5 v. the recommended value for rdat(lkg) = 3m ? . v o1 (5v)=v fb *((r 1 /r 2 )+1); v o2 (9v)= v fb *((r 1 / r x1 )+1), r x1 =r 2 //r 3 ; v o3 (12v)= v fb *((r 1 / r x2 )+1), r x2 =r x1 //r 4 ; v o4 (20v)= v fb *((r 1 / r x3 )+1), r x3 =r x2 //r 5 ; rev1.0 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., ? www.seawardinc.com ? page 7 9/4/2012
SE100B qc2.0 interface module outline drawing sop-8 1 2 3 4 5 6 7 8 h e d a1 a b b1 c min max min max a 0.0532 0.0688 1.35 1.75 a1 0.0040 0.0098 0.10 0.25 b 0.0130 0.0200 0.33 0.51 b1 c 0.0075 0.0098 0.19 0.25 d 0.1890 0.1968 4.80 5.00 h 0.2284 0.2440 5.80 6.20 e 0.1497 0.1574 3.80 4.00 dimensions 0.050 bsc 1.27 bsc dim n inches mm ?? ???? ? ? ??? 22 ???? b ?? 100085 :010-82895700/1/5 :010-82895706 seaward electronics corporation ? ? 2f, #181, sec. 3, minquan east rd, ta i p e i , ta i w a n r . o . c : 886-2-2712-0307 : 886-2-2712-0191 seaward electronics incorporated ? 1512 centre pointe dr. milpitas, ca95035, usa : 1-408-821-6600 rev1.0 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., ? www.seawardinc.com ? page 8 9/4/2012
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