nx2142 Microsemi Corporation, nx2142 Datasheet - Page 3

• Manufacturer Part Number: nx2142
• Description: Single Channel Pwm Controller With Feedforward And 5v Bias Regulator
• Manufacturer: Microsemi Corporation

Rev. 1.1
10/28/07
V
Oscillator (Rt)
Frequency
Frequency Over Vin
Ramp Peak to Peak Voltage
Ramp Valley Voltage
Ramp Peak to Peak/Vin Gain
Max Duty Cycle
Min Duty Cycle
Min Controllable on time
Error Amplifiers
Transconductance
Input Bias Current
Comp SD threshold
Soft Start
Soft Start time
High Side Driver
(CL=3300pF)
Output Impedance , Sourcing
Current
Output Impedance , Sinking
Current
Rise Time
Fall Time
Deadband Time
Low Side Driver
(CL=3300pF)
Output Impedance, Sourcing
Current
Output Impedance, Sinking
Current
Rise Time
Fall Time
Deadband Time
Fixed OCP
OCP voltage threshold
FBUVLO
Feedback UVLO threshold
Over temperature
Threshold
Hysteresis
in
-Hysteresis
N
PARAMETER
R
THdrv(Rise)
R
TLdrv(Rise)
THdrv(Fall)
Tdead(H to
Tdead(L to
TLdrv(Fall)
R
R
source
source
V
sink
sink
V
in
SYM
Tss
_Hyst
RAMP
F
H)
Ib
(Hdrv)
L)
(Ldrv)
(Hdrv)
(Ldrv)
S
V
NX2142
NX2142A
Vin=20V
F
NX2142
NX2142A
percent of nominal
Ldrv going Low to Hdrv going
SW going Low to Ldrv going
in
S
=600kHz
Falling
High, 10% to 10%
High, 10% to 10%
Test Condition
10% to 90%
90% to 10%
10% to 90%
90% to 10%
I=200mA
I=200mA
I=200mA
I=200mA
Min
NX2142/2142A
1000
2500
TYP
600
320
150
0.5
0.8
0.1
0.3
3.4
0.8
0.5
77
50
50
30
50
50
30
70
20
1
2
0
2
1
1
MAX
150
100
Units
umho
ohm
ohm
ohm
ohm
KHz
KHz
V/V
mS
mS
mV
nS
nA
ns
ns
ns
ns
ns
ns
°C
°C
%
%
%
%
V
V
V
V
3