1 gm 7130 hv 3a step down v oltage s witching regula to rs gm 7130 hv v 2.0 5 ww w . g am ma mi c r o . c o m.tw application pre - regulator f o r linear regulators high - efficien c y step - d o w n bu c k r egu l ator on - card/b o ard s w it c h i n g re g u l a tors positive to n eg a tive con v erter (buck - b o ost) description gm 7130hv series is designed to provi d e all the active function for a step - d o w n (b u ck) s w itc h ing r egu l ator, and drives a maximum load current as high as 3 a line a nd l o ad r egu l ati o n s . gm 7130hv is ava il a b le in f i xed out p u t volta g es of 3. 3 v, 5v, 12v and a versat i le adjust a b le o u tput versi o n. t hese reg u lat o rs are sim p le t o u s e and r eq u ire m ini mu m num b e r of ex t e rnal co m p on ents. the f eatures inclu d e inte rn al frequ e n c y c o m pen s ation a nd a fix e d - fre q ue nc y osc i llator. t he gm 7130hv is high - efficie nc y rep l acem e n ts for popul a r three - termi n a l lin e a r re g u la t o rs, and is r eq u iri n g a sm a l l e r heat s i nk or ev e n no n e ed h ea t sink. gm 7130hv perf o rms w e l l w i t h standa r d in d u c tors from most of manufactu re rs, and simp l i f y ing the des i gn of s w it c h - mode p o w e r s u p p li e s. exter n al shut d o w n is incl u d e d w ith 80 a ( t y p i c al) stan db y current. t h e output s w it c h has c y c l e - b y - c y c le curr e nt limiti n g as w e ll as thermal shu t d o w n for full protecti o n un d er fault con d ition s . gm 7130hv o p er a tes at a s w it c h i ng fre q u e n c y o f 52 khz w h i c h all o w i ng smaller size filter compo n ents than w h at w o u l d be ne e ded w i th lo w e r freq u en c y s w it c h i n g r e gu l ators. gm 7130hv series are available in a standard 5 - lead to - 220, to220b and to263 package s. features ? 3.3v, 5 v, 12v a n d ad j u stable output ve r sions ? adjust a b le ve r sion o u tput vol t age r a nge 1.2 3 v to 57 v ? v out accuracy is up to 2 % under specified input voltage the output load conditions ? input volta g e ran g e up to 60 v ? req u ires o n l y 4 ex t e rn a l co m po n ents with high effic i en c y ? t t l shutd o w n cap a bili t y, l o w p o w e r st a nd b y mode ? built - in t h ermal shutd o w n , cu r rent limit prot e ction ? uses stan d ard induc t o rs ? 52 khz fixed f r eq u en c y inte rn al osci l lator t ypical application circuits 7v C 6 0v unregulated dc input c in 100f v in gm 7130 hv - 5.0 f eedback output l1 100 h 5 v regulated outpu t, c out 680 f d1 1n5822 gnd 1 4 2 3 5 on/off
2 gm 7130 hv v 2.0 5 gm 7130 hv 3a step down voltage s witching regula to rs marking information and pin configurations (top view) to - 220 - 5 to - 220 b - 5 to - 263 - 5 g: green product vv: voltage suffix (1 5 = 1. 5 v, 50 = 5.0v a = adj ) a: assembly / test site code y: year ww: week gm 7130 hvg vvayww gm 7130 hvg vvayww gm 7130 hvg vvayww 1. v in 2 . output 3 . gnd 4 . feedback 5 . on/off 1. v in 2 . output 3 . gnd 4 . feedback 5 . on/off 1. v in 2 . output 3 . gnd 4 . feedback 5 . on/off
3 gm 7130 hv 3a step down v oltage s witching regula to rs gm 7130 hv v 2.0 5 ordering information ordering n u mber output voltage packa g e sh ipping gm 7130hv - ata5t g adj to - 263 - 5 50 units / tube gm 7130hv - ata5 r g to - 263 - 5 800 units / reel gm 7130hv - at b 5t g to - 220 - 5 50 units / tube gm 7130hv - at b5bt g to - 220 - 5b 50 units / tube gm 7130hv - 3.3 ta5t g 3.3 to - 263 - 5 50 units / tube gm 7130hv - 3.3 ta 5 r g to - 263 - 5 800 units / reel gm 7130hv - 3.3 t b 5t g to - 220 - 5 50 units / tube gm 7130hv - 3.3 t b5bt g to - 220 - 5b 50 units / tube gm 7130hv - 5.0 ta5t g 5.0 to - 263 - 5 50 units / tube gm 7130hv - 5.0 t a5 r g to - 263 - 5 800 units / reel gm 7130hv - 5.0 t b 5t g to - 220 - 5 50 units / tube g m 7130hv - 5.0t b5bt g to - 220 - 5b 50 units / tube gm 7130hv - 12 ta5t g 12 to - 263 - 5 50 units / tube gm 7130hv - 12 t a5 r g to - 263 - 5 800 units / reel gm 7130hv - 12 t b 5t g to - 220 - 5 50 units / tube gm 7130hv - 12 t b5bt g to - 220 - 5b 50 units / tube
4 gm 7130 hv v 2.0 5 gm 7130 hv 3a step down voltage s witching regula to rs absolute maximum ratings (note 1) rating value unit maximum supply voltage 63 v pin input voltage - 0.3 + v in + 0.3 v feedback pin voltage - 0.3 + v in + 0.3 v output voltage to ground (steady state) - 1.0 v power dissipation internally limited - storage temperature range - 65 to 150 c maximum junction temperature + 150 c operating temperature range - 40 to 125 minimum eds rating (note 2) 2 kv lead temperature (soldering, 10 sec) + 260 c block diagram v in 1 2 4 3 5 v out regulator with enable comparator 52khz oscillator driver thermal shutdown & current limit reset 1.23v reference r1 1.0k r2* error amplifier fb gnd v out = 3.3v, r2 = 1.7 k v out = 5.0 v, r2 = 3.1 k v out = 12 v, r2 = 8.84 k v out = adj , r 1 = open , r2 = 0 ? on/off on/off
5 gm 7130 hv 3a step down v oltage s witching regula to rs gm 7130 hv v 2.0 5 electrical cha racteristics: gm 7130hv - adj (specifications with standard type face are for t j = 25 , and those with bold face type apply over full operating temperature rage ) parameter condition (note 3) symbol m in t yp m ax u nit feedback voltage v in = 12v, i load = 0.5a , v out = 5v , circuit of fig 2. v out 1.217 1.230 1.243 v 8.0 v ? v in ? 6 0v, 0. 5 a ? i load ? 3a , v out = 5v , circuit of fig 2. 1.193 1.267 1.180 1.280 efficiency v in =12v, i l o ad =3.0a, v out = 5 v 77 % electrical characteristics: gm 7130hv - 3.3 (s pecifications with standard type face are for t = 25 , and those with bold face type apply over full operating temperature rage) parameter condition (note 3) symbol m in t yp m ax u nit output voltage v in = 12v, i load = 0.5a , circuit of fig 2. v out 3.234 3 .300 3.366 v 6 v ? v in ? 6 0v, 0. 5 a ? i load ? 3a , circuit of fig 2 3.16 8 3. 432 3. 135 3.4 65 efficiency v in =12v, i l o ad =3.0a 7 5 % electrical characteristics: gm 7130hv - 5.0 (specifications with standard type face are for t = 25 , and those wi th bold face type apply over full operating temperature rage) parameter condition (note 3) symbol m in t yp m ax u nit output voltage v in = 12v, i load = 0.5a , circuit of fig 2. v out 4.900 5.000 5.100 v 8 v ? v in ? 6 0v, 0. 5 a ? i load ? 3a , circuit of fig 2. 4.800 5.200 4.750 5.250 efficiency v in =12v, i l o ad =3.0a 77 % el ectrical characteristics: gm 7130hv - 12 (specifications with standard type face are for t = 25 , and those with bold face type apply over full operating temperature rage) parameter condition (note 3) symbol m in t yp m ax u nit output voltage v in = 25v, i load = 0.5a , circuit of fig 2. v out 11.76 12.00 12.24 v 15 v ? v in ? 6 0v, 0. 5 a ? i load ? 3a , circuit of fig 2. 11.52 12.48 11.40 12.60 efficiency v in =1 5 v, i l o ad =3.0a 88 %
6 gm 7130 hv v 2.0 5 gm 7130 hv 3a step down voltage s witching regula to rs electrical characteristics: all output voltage version s (specifications with standard type face are for t j = 25 c , and those with bold face type apply over full operating temperature rage . unless otherwise specified, v in = 12v for 3.3v, 5.0v and adj version, v in = 25v for 12v version, i load = 500ma ) paramete r condition symbol m in t yp m ax u nit feedback bias current v out =5v (adjustable version only) i b - 50 100 na 500 oscillator frequency (note 8 ) f o 47 52 58 khz 42 63 saturation voltage l out = 3a (notes 4 ) v sat - 1.4 1.8 v 2.0 max du ty cycle (on) (note 5 ) dc 93 98 - % current limit peak current (notes 4, 8 ) l cl 4.2 5.8 6.9 a 3.5 7.5 output leakage current output = 0v (notes 6, 7 ) l l 7.5 2 ma output = - 1v (notes 6, 7 ) - 30 quiescent current (note 6 ) l q - 5 10 ma standby quiescent current = 5v (off) l stby - 50 200 a low (on ) v ih - 1.2 1.0 v 0.8 high (off ) v il 2.2 1.4 - 2.4 v loglc = 2.5v (off) i h 12 30 a v loglc = 0.5v (on) i l 0 10 note 1: absolute maximum ratings indicate limits beyond which damage to the device may occur. operating ratings indicate conditions for which the devi ce is intended to be functional but do not guarantee specific performance limits. for guaranteed specifications and test conditions, see the electrical characteristics. note 2: all limits guaranteed at room te mperature (standard type face) and at temperature extremes (bold type face). note 3: external components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. when the gm7130 hv is used as shown in the figure 2 test circuit, system performance will be as shown in system parameters section of electrical c haracteristics. note 4: output pin sourcing current. no diode, inductor or capacitor connected to output. note 5: feedback pin removed from output a nd connected to 0v. note 6: feedback pin removed from output and connected to +12v for the adjustable, 3.3v, and 5v, versions, and +25v for the 12v and 15v versions, to force the output transistor off. note 7: vin =40v (60v for high voltage version). note 8: the oscillator frequency reduces to approximately 11 khz in the event of an output short or an overload which causes the regulated output voltage to drop approximately 40% from the nominal output voltage. this self protections feature lowers the average power dissipation of the ic by lowering the minimum duty cycle from 5% down to approximately on/off on/off pin logic lnput level on/off pin input current
7 gm 7130 hv 3a step down v oltage s witching regula to rs gm 7130 hv v 2.0 5 test circuit and layout guidelines care ful layout is important with any switching regulators. rapidly switching currents associated with wiring inductance gen erate voltage transients which can cause problems. to minimize inductance and ground loops, the lengths of the leads indicated by heavy lines in figure 1& 2 below should be kept as short as possible. single point grounding (as indicated ) or ground plane co nstruction should be used for best results. when using the adjustable version, place the programming resistors as close as possible to gm 7130hv , to keep the sensitive feedback wiring short. figure 1 fixed ouput votl age version s c in = 100f out = 100 0 f figure 2 adjustable ouput votlage version s c in = 100f ou t = 1000 f out = v ref (1 + r2/r1) where v ref = 1.23v and r1 is between 1k to 5k v in unregulatedd dc input c in 100f c out 100 0f l1 10 0 h d1 v out l o a d 4 f eedback 2 output 3 gnd 1 v in gm 7130 hv - x.x v in unregulatedd dc input c in 100f c out 1000 f l1 10 0 h d1 mbr360 v out 5.0v l o a d 4 fb 2 v out 3 gnd 1 v in gm7130 hv - a dj r2 r1 5 on/off 5 on/off d1 mbr360
8 gm 7130 hv v 2.0 5 gm 7130 hv 3a step down voltage s witching regula to rs application hints input capacitors (c in ) the regulator input pin must be by - passed with at least a 100 f electrolyti c capacitor to maintain stability. the capacitor s leads must be kep t short, and located near gm1730hv. if the operating temperature range includes temperature below - 25 c, the input capacitor value may need to be larger. with most electrolytic capacitors, the capacitance value decreases and the esr increase with lower temperature and age. it is suggested to parallel a ceramic or solid tantalum capacitor to increase the stability at cold temperature. it is n should be used for best results. when using the adjustable version, place the programming resistors as close as possible to gm7130hv, to keep the sensitive feedback wiring short. i nductor selection all switching regulators have two basic modes of operation: continuous and discontinuous. the difference between the two types relates to the inductor current, whether it is flowing continuously, or if it drops to zero for a period of time in the normal switching cycle. each mode has distinctively different operating characteristics, which can affect the reg ulator performance and requirements. the gm7130hv can be used for both continuous and discontinuous modes of operation. inductors are available in different styles such as pot core, toriod, e - frame, bobbin core, etc., as well as different core materials, s uch as ferrites and powdered iron. the least expensive, the bobbin core type, consists of wire wrapped on a ferrite rod core. this type of construction makes for an inexpensive inductor, but since the magnetic flux is not completely contained within the co re, it generates more electromagnetic interference (emi). this emi can cause problems in sensitive circuits, or can give incorrect scope readings because of induced voltages in the scope probe. an inductor should not be operated beyond its maximum rated cu rrent because it may saturate. when an inductor begins to saturate, the inductance decreases rapidly and the inductor begins to look mainly a resist or (the dc resistance of the winding). this will cause the switch current to rise very rapidly. different in ductor types have different saturation characteristics, and this should be kept in mind when selecting an inductor. the inductor manufacturers data sheets include current and energy limits to avoid inductor saturation.
9 gm 7130 hv 3a step down v oltage s witching regula to rs gm 7130 hv v 2.0 5 package outline dimensions C to - 263 - 5 package outline dimensions C to - 220 - 5 0.400 + 0.015 0.400 C 0.005 (0.38+ 0.18) (0.38 + - 0.03) 0.015 + 0.007 0.015 C 0.001 (0.38+ 0.18) (0.38 + - 0.03) 0. 10 5 + 0.0 10 0. 105 C 0. 010 (2.67 + 0.25 ) (2.67 + - 0.38 ) 0.525 C 0.555 (13.34 C 14.10) 0.175 C .185 (4.45 C 4.75) 0.048 C 0.052 (1.22 C 1.32) 0.057 C 0.077 (1.45 C 1.96) 0.030 C 0.040 (0.76 C 1.02) 0.100 C 0.120 (2.54 C 3.05) 0.149 C 0.153 (3.78 C 3.89) 0.149 C 0.153 (3.78 C 3.89) 0.330 C 0.350 (8.38 C 8.89) 0.176 C 0.184 (4.47 C 4.67) 0.046 C 0.054 (1.17 C 1.37) 0.061 C 0.069 (1.56 C 1.76) 0.012 C 0.021 (0.31 C 0.53) 0.092 C 0.108 (2.34 C 2.74) 3 0 - 8 7 0.389 C 0.408 (9.88 C 10.18) 0.596 C 0.612 (15.14 C 15.54) 0.224 C 0.272 (5.70 C 6.90) 0.028 C 0.036 (0.71 C 0. 91) 0.067 (1.70) t yp. 0.322 C 0.339 (8.20 C 8.60) 0.200 C 0.216 (5.08 C 5.48) 0.425 (10.8) 0.410 (10.41) 0.575 (14.61) 0.085 (2.16) 0.067 (1.70) 0.042 (1.07)
10 gm 7130 hv v 2.0 5 gm 7130 hv 3a step down voltage s witching regula to rs o rdering number g m 7130hv a ta5 r g apm gamma micro circuit type output voltage a: adj 3.3 = 3.3v 5.0 = 5.0v 12 = 12.0v package type ta5: to263 - 5 tb5: to - 220 - 5 tb5b: to - 220b - 5 shipping type r:taping & reel t: tube blank: pb - free g: green note: pb - free products : ? rohs compliant and compatible with the current require - ments of ipc/jedec j - std - 020. ? suitable f or use in pb - free soldering processes with 100% matte tin (sn) plating. green products : ? l ead - free (rohs compliant) ? h alogen free(br or cl does not exceed 900ppm by weight in homogeneous material and total of br and cl does not exceed 1500ppm by weight)
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