HV301/HV311
Functional Block Diagram
UV
VIN
C
Regulator & POR
Vbg
UVLO
PWRGD = HV301
PWRGD = HV311
Logic
C
OV
P
U
L
~9.8V
C
L
D
I
H
I
Latch High
Sleep
S
A
B
L
E
G
H
V
DD
2V
bg
10A
1
: 2
mirror
GATE
buffer
RAMP
Transconductor
SENSE
Transconductor
5k
gm
5k
V
EE
Clamp Mechanism
ꢁicOV hOVai OpielVuidOpVvtl egOVltckVtu V(UꢀLꢁ)VhesVbOOi
se asfaOd,V hOVcapcua VchOcksV hOVaiꢂu VsuꢂꢂlyVuidOpVvtl egOV(Uꢀ)
eidVtvOpVvtl egOV(ꢁꢀ)VsOisOVcapcua sV tVOisupOV he V hOVaiꢂu
vtl egOVasVwa haiVꢂptgpemmOdVlama s.VVThOsOVlama sVepOVdO OpmaiOd
byV hOVsOlOc OdVveluOsVtfVpOsas tpsVR1,VR2VeidVR3,VwhachVftpmVe
vtl egOVdavadOp.
Functional Description
Insertion into Hot Backplanes
TOlOctm,Vde eViO wtpksVeidVstmOVctmꢂu OpVeꢂꢂlace atisVpO-
quapOV hOVebala yV tVaisOp VeidVpOmtvOVcapcua VcepdsVfptmVsys Oms
wa htu VꢂtwOpaigVdtwiV hOVOi apOVsys Om.VVAllVcapcua VcepdsVhevO
stmOVfal OpVceꢂeca eicOVtiV hOVꢂtwOpVpeals,VwhachVasVOsꢂOcaelly
puOVaiVcapcua VcepdsVtpViO wtpkV OpmaielVOquaꢂmOi Vu alazaig
das pabu OdVꢂtwOpVsys Oms.VVThOVaisOp atiVceiVpOsul VaiVhagh
aipushVcuppOi sV he VceiVceusOVdemegOV tVctiiOc tpVeidVcapcua
cepdsVeidVmeyVpOsul VaiVuieccOꢂ eblOVdas upbeicOsVtiV hO
sys OmVbeckꢂleiOVꢂtwOpVpeals.
AssumaigV hOVebtvOVctida atisVepOVse asfaOdVeidVwhalOVcti aiu-
aigV tVhtldV hOVPWRGDVtu ꢂu Vaiec avOVeidV hOVOx OpielVMꢁSFET
GATEVvtl egOVltw,V hOVcuppOi VstupcOVfOOdaigV hOVRAMPVꢂaiVas
upiOdVti.VThOVOx OpielVceꢂeca tpVctiiOc OdV tVa VbOgaisV t
chepgO,V husVs ep aigVeiVaia aelV amOVdOleyVdO OpmaiOdVbyV hOVveluO
tfV hOVceꢂeca tp.VDupaigV hasV amOVafV hOVꢁꢀVtpVUꢀVlama sVepO
OxcOOdOd,VeiVammOdae OVpOsO VtccupsVeidV hOVceꢂeca tpVcti-
iOc OdV tV hOVRAMPVꢂaiVasVdaschepgOd.
ThOVHꢀ301VeidVHꢀ311VepOVdOsagiOdV tVfecala e OV hOVaisOp atiVtf
hOsOVcapcua VcepdsVtpVctiiOc atiVtfV OpmaielVOquaꢂmOi Vby
Olamaie aigV hOsOVaipushVcuppOi sVeidVꢂtwOpaigVuꢂV hOsOVcapcua s
aiVeVcti ptllOdVmeiiOpVef OpVfullVctiiOc tpVaisOp atiVhesVbOOi
echaOvOd.VVThOVHꢀ301VtpVHꢀ311VasVai OidOdV tVꢂptvadOV has
fuic atiVtiVsuꢂꢂlyVpealsVaiV hOVpeigOVtfV 10V tV 90Vꢀtl s.
WhOiV hOVvtl egOVtiV hOVRAMPVꢂaiVpOechOsVeiVai OpiellyVsO
hpOshtldVvtl egO,V hOVge OVdpavOVcapcua VbOgaisV tV upiVtiV hO
Ox OpielVMꢁSFET.VIiVsOpvtVmtdO,VticOV hOVge OV hpOshtldVas
pOechOd,V hOVpOsul aigVtu ꢂu VcuppOi VgOiOpe OsVeVvtl egOVdptꢂ
tiV hOVsOisOVpOsas tpVctiiOc OdVbO wOOiV hOVSENSEVeidVꢀ EE
ꢂais,VceusaigVeVdOcpOesOVaiV hOVevealeblOVcuppOi VchepgaigV hO
ceꢂeca tpVtiV hOVRAMPVꢂai.VVThasVcti aiutusVfOOdbeckVmOche-
iasmVelltwsV hOVtu ꢂu VcuppOi V tVpasOVaivOpsOVOxꢂtiOi aellyVtvOp
eVꢂOpatdVtfVeVfOwVhuidpOdVmacptsOctidsV tV hOVsOisOVpOsas tp
ꢂptgpemmOdVcuppOi Vlama VsO Vꢂtai .
Description of Operation
DupaigVaia aelVꢂtwOpVeꢂꢂlace ati,VeVuiaquOVꢂptꢂpaO epyVcapcua Vhtlds
tffV hOVOx OpielVMꢁSFET,VꢂpOvOi aigVeiVaiꢂu Vgla chVwhalOVei
ai OpielVpOgule tpVOs eblashOsVeiVai OpielVtꢂOpe aigVvtl egOVtf
eꢂꢂptxame OlyV10ꢀ.VVUi alV hOVꢂptꢂOpVai OpielVvtl egOVasVechaOvOd
ellVcapcua sVepOVhOldVpOsO ,V hOVPWRGDVtu ꢂu VasVaiec avOVeidV hO
ge OV tVstupcOVvtl egOVtfV hOVOx OpielVMꢁSFETVasVclemꢂOdVltw.
WhOiV hOVvtl egOVdptꢂVtiV hOVsOisOVpOsas tpVpOechOsV50mꢀV hO
A092605
4
SUPERTEX [ Supertex, Inc ]
