gate driver w i th vreg and charge pump regulator ixys cop y right ? ix ys corp ora t ion 2005 1 4/29/05 IXI858 / ixi859 features: ? logic level gate drive compatible ? 60ma source / 120ma sink minimum gate drive ? 5.0v or 3.3v voltage regulator ? charge pump regulator stabilizes v cc power supply at 13v ? uvlo protection applications: ? controller based off-line applications ? power supply and power management ? lighting control general description the IXI858 and ixi859 combine a power mosfet driver, linear voltage regulator, and charge pump regulator for power supply generation in a single soic-8 package. the IXI858 features a 5.0v linear voltage regulator, and the ixi859 a 3.3v linear voltage regulator. these three power functions combined on the IXI858/859 target micro-controller based off-line applications. the IXI858 and ixi859 are designed to operate over a temperature range of -25c to +125c, and are available in an 8 lead soic package. o r d e r i n g i n f o r m a t i o n part no. description pack quantity i x i 8 5 8 s 1 1 0 0 ( t u b e ) IXI858s1t/r 5.0v version 2500 (tape & reel) i x i 8 5 9 s 1 1 0 0 ( t u b e ) ixi859s1t/r 3.3v version 2500 (tape & reel) functional block diagram soic-8 lead configuration + - 5 6 7 8 1 2 4 vcc vo ut in ga te gn d vsup vcap 75k 13v vc l a m p ch r g p r e g vre g u v l o 8 - lead so ic 1 2 3 4 8 7 6 5 n/ c vout vc a p vcc in g a t e gnd vs u p
ixys www.ixys.com 2 4/29/05 IXI858 / ixi859 soic-8 pin description pin no. pin sy mbol i/o description 1 v c c supply power input connects to a rectified high voltage source through a current limiting series resistor and filter capacitor to ground. regulated 13 volt output when the charge pump is active. 2 v o u t output linear regulator output (IXI858 = 5.0v, ixi859 = 3.3v) 3 n / c no c o n n e c t 4 in input gate driver input 5 gate output gate driver outpu t. drives external power mosfet. 6 g n d g r o u n d ground r e t u r n 7 v s u p i/o charge pump switch input. enabl es / disables the charge pump output. requires a low esr capacitor. 8 v c a p i/o charge pump switch output. rectified charge pump output. requires a low esr capacitor. absolute maximum ratings sy mbol parameter min max units v cc dc supply voltage -0.4 +20.0 v v out logic system supply voltage -0.4 +6.0 v v in gate input voltage -0.4 +6.0 v i sup continuous current into v sup p i n - 2 0 0 + 2 0 0 m a i peak peak current into v sup - 1 + 1 a p d power dissipation 500 mw t j maximum junction temperature +150 o c t st g storage temperature -65 +150 o c a bsolute maximum ratings are stress ra tings. stresses in excess of these ratings can cause permanent damage to t he device. f unctional operation of the device at these or any ot her conditions beyond those i ndicated in the operationa l sections of this data sheet is not implied. exposure of the device to the absolute maximum ratings for an extended peri od may degrade the device and affect it s reliabilit y . esd warning esd (electrostatic discharge) sensit ive device. although the IXI858 / ixi859 feature proprietary esd protection circuitry , permanent damage may be sustained if subjected to hi gh energy electrostatic discharges. proper esd precautions are recommended to avoid performance degradation or loss of functionality .
ixys www.ixys.com 3 4/29/05 IXI858 / ixi859 operating range symbol parameter min max units v cc supply voltage uvlo +17 v i sup continuous current in v sup pin 0 150 ma i peak peak current in v sup pin (t p < 1s, f < 150khz) -750 +750 ma electrical characteristics t a =25c, v cc =13v unless otherwise specified symbol parameter condition min typ max units supply (vcc) i cc supply current v in <1v, no load any pin 0.7 1.0 ma i cc2 supply current 1nf gate load, 300khz in signal 5 ma i stby standby current undervoltage detected 160 a v clamp clamp voltage i cc <5ma 17 v input (in) v ton turn-on threshold voltage 1.95 v v toff turn-off threshold voltage 1.15 v v h hysteresis 0.5 v i inl input current low 20 a i inh input current high 100 a voltage regulator (vout) ixi859 i out = 10ma 3.20 3.30 3.40 v v out voltage reference IXI858 i out = 10ma 4.85 5 5.15 v reg load load regulation i out change from 10ma to 25ma 50 mv v out = 1v, ixi859 75 i peak peak output current v out = 1v, IXI858 100 ma dv out temp coefficient i out = 10ma 250 ppm/c c out allowed capacitive load i out = 10ma 0.2 2.2 f i leak leakage current in uvlo state v out = 1v 10 a t startup startup time (v out > 3.1v) c out = 1uf 0.1 ms t settle settling time c out = 1 uf 2 ms charge pump regulator vcpr on turn-on level measured at vcc 13.15 v vcpr off turn-off level measured at vcc 12.85 v vcpr hys hysteresis 0.30 v vcpr fwd forward voltage i fwd = 150ma (vsup to vcap) 1.5 v
ixys www.ixys.com 4 4/29/05 IXI858 / ixi859 electrical characteristics t a =25c, v cc =13v unless otherwise specified sy mbol parameter condition min ty p max units gate output (gate) v ol output low voltage i gat e = 10ma 0.5 v v oh output high voltage i gat e = -10ma 11 v i sink output sink current v gat e = 6v 120 ma i src output source current v gat e = 3v 60 ma v ol2 output low voltage in uvlo state v cc = 6v, i gat e = 1ma 0.8 v t mi n p w minimum output pulse width c gat e = 10pf 80 ns t pd in to gate propagation delay c gat e = 10pf 200 ns under voltage lockout (vcc) uvlo h uvlo top threshold voltage vcc rising 14.1 v uvlo l uvlo bottom threshold voltage vcc falling 8.2 v v hy s uvlo hysteresis 5.9 v ty pical application circuit + - 5 6 7 8 1 2 4 vcc vo ut in ga te gn d vsup vcap 75k 13 v vc l a m p ch rg pre g vre g uvl o c 1uf 22 0n f 10u f hv dc in h v dc o u t dc supp l y ix i8 58 / ix i8 59 r1 l1 r2 c1 c2
ixys www.ixys.com 5 4/29/05 IXI858 / ixi859 package mechanical data 8-lead soic ixy s corporation makes no representations or w a rranties w i th res pect to the accuracy or completeness of the contents of this publication and reserves the right to make changes to specifications and product descriptions at any time w i thout notice. neith er circuit patent licenses nor indemni ty are expressed or implied. except as set forth in ixy s ? standard terms and conditions of s ale, ixy s corporation assumes no liability w hatsoever, and disclaims any ex pressed or implied w a rranty , relating to its products including, but not limited to, the implied w a rranty of merchantab ility , fitness for a particular purpose, or infringement of an y intellectual property right .
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