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PDF MIC9130 Fiche technique - Micrel Semiconductor

Numéro de référence MIC9130
Description High-Speed Telecom DC-to-DC Controller
Fabricant Micrel Semiconductor 
Logo Micrel Semiconductor Logo 

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MIC9130 Datasheet, Description
MIC9130
MIC9130
Micrel, Inc.
High-Voltage, High-Speed Telecom DC-to-DC Controller
General Description
The MIC9130 is a current-mode PWM controller that efciently
converts –48V telecom voltages to logic levels. The MIC9130
features a high voltage start-up circuit that allows the device to
be connected to input voltages as high as 180V. The high input
voltage capability protects the MIC9130 from line transients
that are common in telecom systems. The start-up circuitry
also saves valuable board space and simplies designs by
integrating several external components.
The MIC9130 is capable of high speed operation. Typically
the MIC9130 can control a sub-25ns pulse width on the gate
out pin. Its internal oscillator can operate over 2.5MHz, with
even higher frequencies available through synchronisation.
The high speed operation of the MIC9130 is made safe by
the very fast, 34ns response from current sense to output,
minimizing power dissipation in a fault condition.
The MIC9130 allows for the designs of high efciency power
supplies. It can achieve efciencies over 90% at high output
currents. Its low 1.3mAquiescent current allows high efciency
even at light loads.
The MIC9130 has a maximum duty cycle of 50%. For de-
signs requiring a high duty cycle, refer to the MIC9131. The
MIC9130 is available in a 16-pin SOP and 16-pin QSOP
package options. The rated junction temperature range is
from –40°C to +125°C.
Features
• Input voltages up to 180V
• Internal oscillator capable of >2.5MHz operation
• Synchronisation capability to 4MHz
• Current sense delay of 34ns
• Minimum pulse width <25ns
• 90% efciency
• 1.3mA quiescent current
• 1μA shutdown current
• Soft-start
• Resistor programmable current sense threshold
• Selectable soft-start retry
• 4Ω sink, 12Ω source output driver
• Programmable under-voltage lockout
• Constant-frequency PWM current-mode control
• 16-pin SOIC and 16-pin QSOP
Applications
• Telecom power supplies
• Line cards
• ISDN network terminators
• Micro- and pico-cell base stations
• Low power (< 30W) dc-dc converters
Typical Application
VIN
36V to 72V
MBR0540
12V
40V/0.5A
20Ω
N=5
1μF
16V
T1
1M 0.1μF
38.3k
13 1 2 10
N = 20
N=4
Si4800DY
Si4884DY
B330
2.5μH
330μF (x2)
6.3V
20k 7 FB
6 COMP
1.21k 5 SYNC
332k
0.1μF
8 CPWR
3 RBIAS
12 SS
9 VBIAS
OSC
4
MIC9130
OUT 16
FQD10N20
0.2Ω
200V
ComSpleonpseation
ISNS 14
AGND PGND
11 15
332k
0.2Ω
1W
10nF
4.75k
47pF
OPTO
FEEDBACK
1.5MHz DSL Power Supply
VOUT
3.3V @ 4A
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
November 2008
1
M9999-111108
MIC9130 Fiche technique
MIC9130
Micrel, Inc.
Absolute Maximum Ratings (Note 1)
Line Input Voltage (VLINE).......................................... +190V
VCC Input Voltage (VCC) .............................................. +19V
Current Sense Input Voltage (VISNS).............. –0.3 to +5.3V
Enable Voltage (VEN)............................. –0.3 to VCC + 0.3V
Feedback Input Voltage (VFB) ........................ –0.3 to +5.3V
Sync Input Voltage (VSYNC)............................ –0.3 to +5.3V
Soft-Start Voltage (VSS).................................. –0.3 to +5.3V
UVLO Voltage (VUVLO) ................................... –0.3 to +5.3V
Storage Temperature (TS) ........................ –65°C to +150°C
Power Dissipation (PD)
16-pin SOP ...................................400mW @ TA = +85°C
16-pin QSOP ................................245mW @ TA = +85°C
ESD Rating, Note 3
Operating Ratings (Note 2)
Line Input Voltage (VLINE)..................VCC to +180V, Note 4
VCC Input Voltage (VCC) .................................. +9V to +18V
Junction Temperature Range (TJ) ............ –40°C to +125°C
Package Thermal Resistance
16-pin SOP JA) .............................................. 100°C/W
16-pin QSOP JA) ............................................ 163°C/W
Electrical Characteristics
TA = 25°C, VLINE = 48V, VCC = 10V, Rt = 9.47KΩ, Ct = 470pF, RBIAS = 562kΩ, VEN = 10V, VISNS = 0V, VUVLO = 2V, VSYNC = 0V, unless
otherwise noted. Bold values indicate –40 °C TJ +125°C.
Parameter
Condition
Min Typ Max Units
Bias Regulator
Output Voltage
Line Regulation
Load Regulation
Oscillator Section
Initial Accuracy (fOSC)
Oscillator Output Frequency
Maximum Duty Cycle
Voltage Stability (Δf/f)
Temperature Stability
ppm/°C
Maximum Sync Frequency
Sync Threshold Level
Sync Hysteresis
Sync Minimum Pulse Width
IVBIAS = 0mA; VOSC = 0V (Oscillator OFF)
9V VCC 18V, IVBIAS = 0mA; VOSC = 0V
0mA IVBIAS 5mA; VOSC = 0V
Rt = 9.47KΩ, Ct = 470pF
9V VCC 18V
–40°C TJ 125°C
Note 5
4.7 4.85 5.0
4.6 5.1
24 40
5 30
V
V
mV
mV
180 200 220
fOSC/2
50
2.5
100
4
2.5
0.7
50
kHz
kHz
%
%
MHz
V
V
ns
Error Amp Section
FB Voltage
Open Loop Voltage Gain, AVOL
Unity Gain Bandwidth
PSRR
COMP Sink Current
COMP Source Current
VCOMP Low
VCOMP High
Input Bias Current (IFB)
Slew Rate
VCOMP = VFB
9V VCC 18V
VFB = 2.7V; VCOMP = 5V
VFB = 2.3V; VCOMP = 0V
VFB = 2.7V; ICOMP = –50μA
VFB = 2.3V; ICOMP = +500μA
VFB = VCOMP
SINK
SOURCE
2.475 2.5 2.525
2.45 2.55
V
90 dB
4 MHz
60 dB
80 100
μA
1 2.5
mA
115 300 mV
3.5 4
V
160 nA
1.5 V/μs
1.5 V/μs
November 2008
3
M9999-111108

3 Page

MIC9130 pdf
MIC9130
5.010
VBIAS vs. VCC
5.008 RB IAS= 560K
5.006
5.004
5.002
5.000
4.998
4.996
4.994
4.992
4.990 8 9 10 11 12 13 14 15 16 17 18
VCC (V)
VCC Turn On/Off Thresholds
vs. Temperature
7.8
7.6
VC C=10V
RB IAS=560K
Vcc G LO On
7.4
7.2
7
6.8 Vcc G LO Off
6.6
6.-440 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
2
1.95
1.9
1.85
1.8
1.75
1.7
1.65
1.6
1.55
1.58
Enable Threshold
vs. VCC
9 10 11 12 13 14 15 16 17 18
VCC (V)
Peak Short Circuit Depletion
80 FET Current vs. VLINE
75 VC C = 0V
70
65
60 –40°C
55 25°C
50
45 125°C
400 40 80 120 160 200
VLINE (V)
M9999-111108
5V VBIAS Voltage
vs. Temperature
5.06
5.04
5.02
5
4.98
VC C = 10V
RB IAS= 560K
4.96
Rt = 9.47K
4.94
Ct = 470pF
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
ISNS Current Limit Threshold
822.0
821.5
vs. VCC Voltage
RB IAS=560K
821.0
820.5
820.0
819.5
819.0
818.5
818.08 9 10 11 12 13 14 15 16 17 18
VCC (V)
Gate Drive Current
2.5 vs. VCC
2.3
2.1 S I NK
1.9
1.7
1.5
1.3
1.1
0.9 S OURC E
0.7
0.58 9 10 11 12 13 14 15 16 17 18
VCC (V)
Depletion FET Current
12 vs. VLINE
25°C
–40°C
10
8
VC C=7.5V
6
125°C
4
2
00 40 80 120 160
VLINE (V)
6
Micrel, Inc.
5
4.99
4.98
4.97
4.96
4.95
4.94
0
Bias Voltage Load
Regulation
VC C = 10V
1234
IBIAS (mA)
5
ISNS Current Limit Threshold
vs. Temperature
840
VC C= 10V
835 RB IAS= 560K
830
825
820
81-540
0 40 80 120 160
TEMPERATURE (°C)
Peak Short Circuit Depletion
FET Current vs. Temperature
80
75 180V Line
VC C = 0V
70
65
60
55 48V Line
50
45
4-040 0
40 80 120 160
TEMPERATURE (°C)
Depletion FET Current
vs. Low VLINE Voltage
10
9 –40°C
8 25°C
7 125°C
6
5
4
3
2
1
07 7.5 8 8.5 9 9.5 10
VLINE (V)
November 2008

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