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NCP81246MNTXG

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P28
NCP81246
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10
Table 5. ELECTRICAL CHARACTERISTICS − 2-PHASE RAIL SPECIFIC
(Unless otherwise stated: −40°C<T
A
< 100°C; 4.75 V < VCC < 5.25 V; C
VCC
= 0.1 mF)
Parameter
Test Conditions Min Typ Max Unit
DIFFERENTIAL SUMMING AMP
Input Bias Current
VSP = VSN = 1.3 V −25 − 25 nA
VSP Input Voltage Range −0.3 − 3 V
VSN Input Voltage Range −0.3 − 0.3 V
−3dB Bandwidth
C
L
= 20 pF, R
L
= 10 kW
− 22.5 − MHz
Closed Loop DC Gain VSP − VSN = 0.5 V to 1.3 V − 1 − V/V
ERROR AMPLIFIER
Input Bias Current
@1.3 V −400 − 400 nA
Open Loop DC Gain
C
L
= 20 pF, R
L
= 10 kW
− 80 − dB
Open Loop Unity Gain Bandwidth
C
L
= 20 pF, R
L
= 10 kW
− 20 − MHz
Slew Rate
DV
IN
= 100 mV, G = −10 V/V
DV
OUT
= 1.5 V to 2.5 V, C
L
= 20 pF,
R
L
= 10 kW
− 5 −
V/ms
Maximum Output Voltage I
SOURCE
= 2.0 mA 4 − − V
Minimum Output Voltage I
SINK
= 2.0 mA − − 0.9 V
CURRENT SUMMING AMPLIFIER
Input Bias Current CSSUM = CSREF = 1.0 V −8 − 8
mA
Offset Voltage (Vos) (Note 4) −2.5 − 2.5 mV
Open Loop Gain − 80 − dB
Open Loop Unity Gain Bandwidth
C
L
= 20 pF, R
L
= 10 kW
− 10 − MHz
Maximum Output Voltage I
SOURCE
= 2.0 mA 3.5 − − V
Minimum Output Voltage I
SINK
= 0.5 mA − − 0.1 V
CURRENT BALANCE AMPLIFIERS
Input Bias Current CSP1/2 = CSREF = 1.2 V −50 − 50 nA
Common Mode Input Voltage Range CSP1/2 = CSREF 0 − 2.3 V
Differential Mode Input Voltage
Range
CSREF = 1.2 V −100 − 100 mV
Input Offset Voltage Matching CSP1/2 = CSREF = 1.2 V
Measured from Average.
−1.6 − 1.6 mV
Current Sense Amplifier Gain 0 V < CSP1/2 − CSREF < 0.1 V 5.7 6 6.3 V/V
Multiphase Current Sense Gain
Matching
CSP1/2 = CSREF = 10 mV to 30 mV −3.5 − 3.5 %
−3dB Bandwidth − 6 − MHz
OVER−CURRENT PROTECTION
I
LIM
Threshold Current
(Delayed OCP Shutdown)
PS0 8.5 10 11.5
mA
PS1, PS2, PS3 − 6.67 −
mA
I
LIM
Threshold Current
(Immediate OCP Shutdown)
PS0 13 15 17
mA
PS1, PS2, PS3 − 10 −
mA
Shutdown Delay Immediate − 300 − ns
Shutdown Delay Delayed − 50 −
ms
I
LIM
Output Voltage Offset
I
LIM
sourcing 15 mA
Measured relative to CSREF
−1.5 − 1.5 mV
NCP81246
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Table 5. ELECTRICAL CHARACTERISTICS − 2-PHASE RAIL SPECIFIC (continued)
(Unless otherwise stated: −40°C<T
A
< 100°C; 4.75 V < VCC < 5.25 V; C
VCC
= 0.1 mF)
Parameter UnitMaxTypMinTest Conditions
Iout OUTPUT
Output Offset Current
V
ILIM
= 5 V − − 0.25
mA
Output Source Current
I
LIM
Source Current = 20 mA
− 200 −
mA
Current Gain
I
IOUT
/ I
ILIM
, R
ILIM
= 20 kW R
IOUT
= 5 kW
DAC = 0.8 V, 1.25 V, 1.52 V
9.5 10 10.5 A/A
MODULATORS
0% Duty Cycle Comp Voltage for PWM Held Low − 1.3 − V
100% Duty Cycle
Comp Voltage for PWM Held High
VRAMP = 12 V
− 2.6 − V
PWM Ramp Duty Cycle Matching Comp = 2 V, PWM T
ON
Matching − ±3 − %
PWM Phase Angle Error − ±15 − °
Ramp Feed Forward Voltage Range 5 − 20 V
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
4. Based on design or characterisation data, not in production test.
Table 6. ELECTRICAL CHARACTERISTICS − SINGLE PHASE RAIL SPECIFIC
(Unless otherwise stated: −40°C<T
A
< 100°C; 4.75 V < VCC < 5.25 V; C
VCC
= 0.1 mF)
Parameter Test Conditions Min Typ Max Unit
ERROR AMPLIFIER
Input Bias Current −25 − 25 nA
VSP Input Voltage Range −0.3 − 3 V
VSN Input Voltage Range −0.3 − 0.3 V
gm 1.3 1.6 2.0 mS
Output Offset −15 − 15
mA
Open Loop Gain
ZL = (1 nF +1 kW) || 10 pF
− 73 − dB
Source Current
DV
IN
= −200 mV
− 200 −
mA
Sink Current
DV
IN
= 200 mV
− 200 −
mA
−3dB Bandwidth
ZL = (1 nF +1 kW) || 10 pF
− 20 − MHz
CURRENT SENSE AMPLIFIER
Input Bias Current CSP = CSN = 1.2 V −50 − 50 nA
Common Mode Input Voltage Range CSP = CSN 0 − 2.3 V
Common Mode Rejection CSP = CSN = 0.5 V to 1.2 V 60 80 − dB
Differential Mode Input Voltage
Range
CSN = 1.2 V −100 − 100 mV
Gain I
OUT
Output 0V ≤ CSP−CSN ≤ 0.1 V 0.96 1 1.04 mS
Gain VSP and I
LIM
Outputs 0V ≤ CSP−CSN ≤ 0.1 V 0.96 1 1.04 mS
−3dB Bandwidth − 6 − MHz
OVER-CURRENT PROTECTION
Output Offset Current V
ILIM
= 1.3 V −1.5 − 1.5
mA
Maximum Output Current 0V ≤ V
ILIM
≤ 1.3 V 130 − −
mA
Maximum Output Voltage
I
ILIM
= 100 mA
1.4 − − V
Activation Threshold Voltage 1.28 1.3 1.32 V
Activation Delay − 250 − ns
I
OUT
Output Offset Current 0V ≤ V
IOUT
≤ 2.0 V −250 − 250 nA
NCP81246
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12
Table 6. ELECTRICAL CHARACTERISTICS − SINGLE PHASE RAIL SPECIFIC (continued)
(Unless otherwise stated: −40°C<T
A
< 100°C; 4.75 V < VCC < 5.25 V; C
VCC
= 0.1 mF)
Parameter UnitMaxTypMinTest Conditions
I
OUT
Maximum Output Current 0V ≤ V
IOUT
≤ 2.0 V 130 − −
mA
Maximum Output Voltage
I
IOUT
= 100 mA
2.1 − − V
DROOP
Output Offset Current 1A
0V ≤ V
DROOP
≤ 1.8 V −1800 − 1800 nA
Output Offset Current 1B 0V ≤ V
DROOP
≤ 1.8 V −900 − 900 nA
Maximum Output Current 0V ≤ V
DROOP
≤ 1.8 V 130 − −
mA
Maximum Output Voltage
I
DROOP
= 100 mA
1.8 − − V
ZCD COMPARATOR
Offset Accuracy
Referred to CSP − CSN − ±1.5 − mV
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
Figure 5. Driver Timing Diagram
NOTE: Timing is referenced to the 10% and the 90% points, unless otherwise stated.
t
fDRVL
t
rDRVL
t
rDRVH
t
fDRVH
t
pdhDRVH
t
pdhDRVL
V
TH
V
TH
1 V
SW
DRVH−SW
DRVL
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NCP81246MNTXG

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Manufacturer:
ON Semiconductor
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Switching Controllers INDUSTRIAL TEMPERATURE
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