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advanced power electronics corp. 680k/1.2mhz, high voltage, boost converter features description operating voltage from 2.6v to 5.5v adjustable output voltage range up to 27v up to 3a output switch current 680k/1.2mhz selectable switching frequency programmable soft-start function external compensation network current limit and thermal shutdown protection under voltage lockout < 1a shutdown current available in the pb-free mesop-10, mesop-8, tdfn 3x3-10l and esop-8 packages 1.freq=high (frequency=1.2mhz) (mesop-10 and tdfn 3x3-10l) data and specifications subject to change without notice 201203271 ape1920 typical application 1 the ape1920 is a high performance, high efficiency step up dc-dc converter with integrated 3a. the ape1920 converter input voltage ranging from 2.6 to 5.5v. the output voltage can be set up to 27v. the selectable frequency o f 680 khz and 1.2 mhz allows the use of small external inductors and capacitors and provides fast transient response. current mode control with external compensation network makes it easy to stabilize the system and keep maximum flexibility. programmable soft start function minimizes impact on the input power system. internal powe r mosfet with very low rds (on) provides high efficiency. the ape1920 automatically transits from pwm to pfm during light load condition further increasing efficiency. the converter also provides protection functions such as current limit and thermal shutdown. the ape1920 is available in space-saving mesop-10, mesop-8, tdfn 3x3-10l and esop-8 packages. r8 15k vin=5v c2 2*10uf l1 4.7uh r2 130k vout=12v c7 100pf u1 ape1920 vcc en comp fb ss sgnd pgnd freq lx c3 0.1uf c3 3*10uf r6 100k c6 10nf d1 b340a lx 4.7~100 r3 r4 1m c5 1nf r8 r2 vout = 1.238v x (1 + ------- ) r8 suggest 10k~30k vin < 4.5v, r3=10 vin > 4.5v, r3= 100 c1 220pf
advanced power electronics corp. (2) freq=low (frequency=680khz) (mesop-10 and tdfn 3x3-10l) (3) freq=high (frequency=1.2mhz) (esop-8/mesop-8) 2 ape1920 typical application r8 15k vin=5v c2 2*10uf l1 6.8uh r2 130k vout=12v c7 150pf u1 ape1920 vcc en comp fb ss sgnd pgnd freq lx c3 0.1uf c3 3*10uf r6 56k c6 10nf d1 b340a lx r3 r4 1m c5 1nf r8 r2 vout = 1.238v x (1 + ------- ) r8 suggest 10k~30k r7 10k c1 220pf vin < 4.5v, r3= 10 vin > 4.5v, r3=100 4.7~100 r8 15k vin=5v c2 2*10uf l1 4.7uh r2 130k vout=12v c7 100pf u1 ape1920 vcc en comp fb ss gnd freq lx c4 0.1uf c3 3*10uf r6 100k c6 10nf d1 b340a r3 r4 1m c8 1nf r8 r2 vout = 1.238v x (1 + ------- ) r8 suggest 10k~30k c1 220pf vin < 4.5v, r3=10 vin > 4.5v, r3=100 4.7~100
advanced power electronics corp. (4) freq=low (frequency=680khz) (esop-8/mesop-8) ordering / package information 3 ape1920 typical application r8 15k vin=5v c2 2*10uf l1 6.8uh r2 130k vout=12v c7 100pf u1 ape1920 vcc en comp fb ss gnd freq lx c4 0.1uf c3 3*10uf r6 100k c6 10nf d1 b340a r3 r4 1m c8 1nf r8 r2 vout = 1.238v x (1 + ------- ) r8 suggest 10k~30k r7 10k c1 220pf vin < 4.5v, r3=10 vin > 4.5v, r3= 100 4.7~100 (top view) mesop-10 lx sgnd vcc comp pgnd ss freq en 1 2 3 4 5 6 7 8 9 10 fb lx exposed pad (sgnd) ( top view ) 1 2 3 4 8 7 6 5 en gnd mesop-8 / esop-8 comp fb ss freq lx vcc exposed pad (gnd) tdfn 3x3-10l comp lx 1 pgnd 10 2 3 4 5 6 7 8 9 fb en sgnd lx vcc freq ss exposed pad (sgnd) top view ape1920x package type mm8 : mesop-8 tgn3 : tdfn 3x3-10l mp : esop-8 mm10 : mesop-10
advanced power electronics corp. ape1920 absolute maximum ratings (at t a =25c) v cc pin voltage (v cc ) ------------------------------------ - gnd - 0.3 to gnd + 6v en, freq,comp,fb,ss, pin voltage --------------- - gnd - 0.3 to vcc + 0.3v lx pin voltage(v lx ) --------------------------------------- 30v power dissipation(p d ) ------------------------------------ - ( t j -t a ) / r thja mw storage temperature range(t st ) -------------------- - -65c to 150c operating junction temperature range(t op ) ----- - -40 to +125 o c thermal resistance from junction to case esop-8 15 o c/w mesop-8 30 o c/w mesop-10 30 o c/w tdfn 3x3-10l 20 o c/w thermal resistance from junction to ambient esop-8 40 o c/w mesop-8 80 o c/w mesop-10 80 o c/w tdfn 3x3-10l 55 o c/w note: r thja is measured with the pcb copper area of approximately 1.5 in 2 (multi-layer). that copper area needs connect to exposed pad. electrical specifications (v in =5v, v out =12v, v en =v in , t a =25 o c, unless otherwise noted) parameter sym test condition min typ max units input voltage range v cc 2.6 - 5.5 v under voltage lockout uvlo rising - 2.35 2.6 v uvlo hysteresis - -150 - mv step-up voltage adjust range v out v cc +0.5 -27 v operating quiescent current i ccq i out = 0ma, v fb =1.5v - 150 250 a shutdown current i sd v en =0v - 0.1 1 a feedback voltage v fb 1.219 1.238 1.257 v fb input leakage current i fb-lkg v fb = 1.5v -100 0.01 100 na line regulation v in =2.6 to 5.5v, i out =20ma - 0.2 - % load regulation v in =5v, i out = 1ma to 0.7a - 0.3 - % freq=high 900 1200 1500 freq=low 500 680 850 freq high-level input voltage v fq-ih 2-- freq low-level input voltage v fq-il - - 0.5 freq input leakage current i fq-lkg freq=gnd - - 0.1 ua soft start current i ss 4713 a n-channel mosfet current llimit i lim duty=40% 3 3.8 4.5 a 4 oscillator frequency f osc khz v
advanced power electronics corp. ape1920 electrical specifications(cont.) parameter sym test condition min typ max units mosfet on-resistance v in =3v, i sw =2a - 200 280 (note1) v in =5v, i sw =2a - 160 220 en high-level input voltage v ih 1-- v en low-level input voltage v il - - 0.4 v en hysteresis hys - 200 - mv en input leakage current i en-lkg v en =gnd or v in - 0.01 0.1 a maximum duty cycle duty v fb =0v 85 90 - % lx leakage current i lxl v lx = 25v, v fb =1.5v - - 10 a thermal shutdown t ds - 150 - thermal shutdown hysteresis t sh -35- note guaranteed by design. pin descriptions pin symbol pin description en enable pin comp compensation pin fb feedback pin ss soft start pin. connect a capacitor to gnd lx switch pin. v cc power input pin gnd ground pin sgnd signal ground pgnd power ground frequency select pin. the power switch operates at 680khz if freq is connected to gnd and at 1.2mhz if freq is connected to vcc block diagram freq 5 r ds(on) m o c vcc ss lx sgnd control and driver logic en comp 1.238v reference soft start current sense slope compensation oscillator fb error amplifier summing comparator thermal shutdown 7ua enable/ disable pgnd n-mos freq
advanced power electronics corp. ape1920 compensation table application information setting the output voltage soft start capacitor frequency select pin (freq) 6 frequency(hz) l1 (h) vin (v) vout (v) r6 ( )c7 (f) 2.5~4.4 5 10k 1.2n 2.5~5.5 7 15k 470p 2.5~5.5 9 27k 270p 2.5~5.5 12 56k 150p 2.5~5.5 15 150k 120p 2.5~5.5 18 110k 100p 2.5~5.5 21 150k 82p 2.5~5.5 24 100k 47p 2.5~4.0 5 33k 1n 2.5~5.5 7 39k 390p 2.5~5.5 9 39k 220p 2.5~5.5 12 100k 100p 2.5~5.5 15 130k 68p 2.5~5.5 18 150k 56p 2.5~5.5 21 220k 47p 2.5~5.5 24 390k 39p 6.8u 4.7u 680k(freq=low ) 1.2m(freq=high) application circuit item shows the basic application circuit with ape1920 adjustable output version. the external resistor sets the output voltage according to the following equation: ? ? ? ? ? ? + = 8 1 238 1 r r v v out 2 . for most applications, r8 is a suggested a value by 10~30k . place the resistor-divider as close to the ic as possible to reduce the noise sensitivity. the soft-start function begins from ss pin voltage=0v to vcc with a 7ua (typ.) constant current charging to the soft-start capacitor, so the capacitor should be large enough to let the output voltage reach regulation inside the soft-start cycle. typical value of soft-start capacitor range is from 4.7nf to 100nf. after the cycle finished, the load can start to draw maximum current as required. the frequency select pin freq allows to set the switching frequency of the device to 680 khz (freq = low) or 1.2 mhz (freq = high). higher switching frequency improves load transient response but reduces slightly the efficiency. the other benefits of higher switching frequency are a lower output ripple voltage. usually, it is recommended to use 1.2 mhz switching frequency unless light load efficiency is a major concern.
advanced power electronics corp. ape1920 application information under voltage lockout (uvlo) input capacitor selection output capacitor selection layout guide (1) mesop-10/tdfn 3x3-10l 7 to avoid mis-operation of the device at low input voltages an under voltage lockout is included that disables the device, if the input voltage falls below (2.35v-150mv). for better input bypassing, low-esr ceramic capacitors are recommended for performance. two parallel 10uf (or one 22uf) input capacitor is sufficient for most applications. for a lower output power requirement application, this value can be decreased. for lower output voltage ripple, low-esr output capacitor like ceramic capacitor is recommended. three parallel 10uf ceramic capacitors work for most of the applications. higher capacitor values can be used to improve the load transient response and reduce output ripple. c2 must be placed between vin and pgnd as closer as possible, vin trace should be wide and short. the pgnd trace can not directly connect to sgnd, the trace take a via to ground area of bottom. lx should connected to lnductor by wide and short trace, keep sensitive components away from this trace. r2 and c8 should be connected to fb pin by short trace. ape1920mm10/APE1920TGN3 vin c2 l1 gnd vout lx sgnd vcc pgnd ss freq en 1 2 3 4 5 6 7 8 9 10 lx fb comp expose pad vcc c4 r3 c6 c7 r6 r8 r2 c5 r4 d1 c3 r7 gnd c4 must be placed between vcc pin and sgnd as closer as possible. the sgnd must connect to exposed pad directly. frequency selection, if freq connect to vcc, the frequency is 1.2mhz, else connect r7 to gnd, the frequency is 680khz. c1
advanced power electronics corp. ape1920 layout guide (2) mesop-8/esop-8 8 ape1920mp / ape1920mm8 gnd vcc ss freq en lx fb comp exposed pad c3 must be placed between vout trace and gnd pin as closer as possible. lx should connected to lnductor by wide and short trace, keep sensitive components away from this trace. r2 and c8 should be connected to fb pin by short trace. vin c2 l1 gnd vout c4 r3 c6 c7 r6 r8 r2 c5 r4 d1 c3 r7 gnd c4 must be placed between vcc pin and gnd pin as closer as possible. the gnd must connect to exposed pad directly. frequency selection, if freq connect to vcc, the frequency is 1.2mhz, else connect r7 to gnd, the frequency is 680khz. vcc vcc vout c1
advanced power electronics corp. ape1920 typical performance characteristics 9
advanced power electronics corp. ape1920 typical performance characteristics 10
advanced power electronics corp. ape1920 typical performance characteristics 11
advanced power electronics corp. ape1920 marking information esop-8 mesop-8 mesop-10 tdfn 3x3-10l 12 part number package code 1920mp ywwsss date code (ywwsss) y last digit of the year ww week sss sequence part number package code 1920mm ywwsss date code (ywwsss) y last digit of the year ww week sss sequence part number package code 1920mm ywwsss date code (ywwsss) y last digit of the year ww week sss sequence date code (ywws) y:year ww week s sequence 1920 ywws part number
package outlines mesop-10 b e e1 e 1 5 6 10 "a" e2 15 6 10 d1 thermally enhanced variations only a a2 a1 d c 0.05 h 0.25 l l1 gauge plane seating pl ane detail a dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a - - 1.1 - - 0.043 a1 0 0.08 0.15 0 0.003 0.006 a2 0.75 0.85 0.95 0.03 0.034 0.038 c 0.08 0.15 0.23 0.003 0.006 0.009 d 2.9 3 3.1 0.114 0.118 0.122 d1 0.75 1.63 2.5 0.03 0.064 0.098 e 4.8 4.9 5 0.189 0.193 0.197 e1 2.9 3 3.1 0.114 0.118 0.122 e2 0.75 1.63 2.5 0.03 0.064 0.098 l 0.4 0.6 0.8 0.016 0.024 0.031 b 0.22 0.3 0.38 0.009 0.012 0.015 e 0.50 bsc 0.020 bsc y - - 0.1 - - 0.004 0 o - 8 o 0 o - 8 o jedec outline: mo-187 ba-t advanced power electronics corp. ape1920
mesop-8 detail a l e e1 a a2 a1 e d 7 (4x) b y c detail a e2 d1 expose pad 1 4 5 8 3 3 dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a - - 1.1 - - 0.043 a1 0 0.08 0.15 0 0.003 0.006 a2 0.75 0.85 0.95 0.03 0.034 0.038 c 0.08 0.15 0.23 0.003 0.006 0.009 d 2.9 3 3.1 0.114 0.118 0.122 d1 0.75 1.63 2.5 0.03 0.064 0.098 e 4.8 4.9 5 0.189 0.193 0.197 e1 2.9 3 3.1 0.114 0.118 0.122 e2 0.75 1.63 2.5 0.03 0.064 0.098 l 0.4 0.6 0.8 0.016 0.024 0.031 b 0.22 0.3 0.38 0.009 0.012 0.015 e 0.65 bsc 0.026 bsc y - - 0.1 - - 0.004 0 o - 8 o 0 o - 8 o jedec outline: mo-187 aa-t 3 333 advanced power electronics corp. ape1920
esop-8 detail a l h e a a2 a1 e d 7 (4x) b y c detail a y x expose pad a - - 1.75 - - 0.069 a1 0 - 0.15 0 - 0.06 a2 1.25 - - 0.049 - - c 0.1 0.2 0.25 0.0075 0.008 0.01 d 4.7 4.9 5.1 0.185 0.193 0.2 e 3.7 3.9 4.1 0.146 0.154 0.161 h 5.8 6 6.2 0.228 0.236 0.244 l 0.4 - 1.27 0.015 - 0.05 b 0.31 0.41 0.51 0.012 0.016 0.02 e 1.27 bsc 0.050 bsc y - - 0.1 - - 0.004 x - 2.34 - - 0.092 - y - 2.34 - - 0.092 - 0 o - 8 o 0 o - 8 o mold flash shall not exceed 0.25mm per side 333 jedec outline: ms-012 ba 3333 advanced power electronics corp. ape1920
tdfn 3x3-10l e d a a1 a3 d2 e e2 l (top view) (bottom view) b pin1 seating plane (side view) dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 0.70 0.75 0.80 0.028 0.030 0.031 a1 0.00 0.02 0.05 0.000 0.001 0.002 a3 0.20 ref. 0.008 ref. b 0.18 0.25 0.30 0.007 0.010 0.012 d 2.90 3.00 3.10 0.114 0.118 0.122 d2 2.20 2.40 2.50 0.087 0.094 0.098 e 2.90 3.00 3.10 0.114 0.118 0.122 e2 1.50 1.60 1.70 0.059 0.063 0.070 e 0.50 bsc. 0.020 bsc. l 0.30 0.40 0.50 0.012 0.016 0.020 advanced power electronics corp. ape1920

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