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MC33067
User Manual
16 pgs702.12 Kb0

ON Semiconductor MC33067, MC34067 User Manual

© Semiconductor Components Industries, LLC, 2009
December, 2009 − Rev. 13
1 Publication Order Number:
MC34067/D
MC34067, MC33067
High Performance Resonant Mode Controllers
Also included are protective features consisting of a high speed fault comparator and latch, programmable soft−start circuitry, input undervoltage lockout with selectable thresholds, and reference undervoltage lockout. These devices are available in dual−in−line and surface mount packages.
Features
• Zero Voltage Switch Resonant Mode Operation
• Variable Frequency Oscillator with a Control Range
Exceeding 1000:1
• Precision One−Shot Timer for Controlled Off−Time
• Internally Trimmed Bandgap Reference
• 4.0 MHz Error Amplifier
• Dual High Current Totem Pole Outputs
• Selectable Undervoltage Lockout Thresholds with Hysteresis
• Enable Input
• Programmable Soft−Start Circuitry
• Low Startup Current for Off−Line Operation
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Figure 1. Simplified Block Diagram
Noninverting
Input
11
8
6
16
3
2
1
OSC Charge
Enable /
UVLO Adjust
V
CC
15
5
14
12
13
V
ref
UVLO
Error Amp
V
CC
UVLO /
Enable
Fault Detector/
Latch
2.5 V
Clamp
Soft-Start
One-Shot
Output B
Inverting Input
Soft-Start
7
Error Amp
Output
One-Shot
Oscillator
Control Current
OSC RC
9
Ground4
Fault Input
10
Pwr GND
Output A
V
ref
Variable
Frequency
Oscillator
Steering
Flip-Flop
5.0 V
Reference
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
MARKING
DIAGRAMS
x = 3 or 4 A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week G = Pb−Free Package
PDIP−16
P SUFFIX
CASE 648
1
16
SOIC−16W DW SUFFIX CASE 751G
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
PIN CONNECTIONS
(Top View)
V
ref
OSC Charge
OSC RC
OSC Control Current
GND
Error Amp Out
Inverting Input
Noninverting Input
One-Shot RC
V
CC
Drive Output B
C
Soft-Start
Enable/UVLO Adjust
Drive Output A
Power GND
Fault Input
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16
1
MC3x067DW
AWLYYWWG
See detailed ordering and shipping information in the package dimensions section on page 2 of this data sheet.
ORDERING INFORMATION
16
1
MC3x067P
AWLYYWWG
16
1
MC34067, MC33067
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2
MAXIMUM RATINGS
Rating Symbol Value Unit
Power Supply Voltage V
CC
20 V
Drive Output Current, Source or Sink (Note 1)
− Continuous
− Pulsed (0.5 ms), 25% Duty Cycle
I
O
0.3
1.5
A
Error Amplifier, Fault, One−Shot, Oscillator and Soft−Start Inputs V
in
− 1.0 to + 6.0 V
UVLO Adjust Input V
in(UVLO)
− 1.0 to V
CC
V
Power Dissipation and Thermal Characteristics
DW Suffix, Plastic Package, Case 751G
T
A
= 25°C
Thermal Resistance, Junction−to−Air
P Suffix, Plastic Package, Case 648
T
A
= 25°C
Thermal Resistance, Junction−to−Air
P
D
R
q
JA
P
D
R
q
JA
862 145
1.25 100
mW
°C/W
W
°C/W
Operating Junction Temperature T
J
+ 150 °C
Operating Ambient Temperature
MC34067 MC33067
T
A
0 to + 70
− 40 to + 85
°C
Storage Temperature T
stg
− 55 to + 150 °C
ESD Capability, HBM Model − 2.0 kV
ESD Capability, MM Model − 200 V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
ORDERING INFORMATION
Device Package Shipping
†
MC33067DWG SOIC−16W
(Pb−Free)
47 Units / Rail
MC33067DWR2G SOIC−16W
(Pb−Free)
1000 / Tape & Reel
MC33067PG PDIP−16
(Pb−Free)
25 Units / Rail
MC34067DWG SOIC−16W
(Pb−Free)
47 Units / Rail
MC34067DWR2G SOIC−16W
(Pb−Free)
1000 / Tape & Reel
MC34067PG PDIP−16
(Pb−Free)
25 Units / Rail
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
MC34067, MC33067
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3
ELECTRICAL CHARACTERISTICS
(VCC = 12 V [Note 2], R
OSC
= 18.2 k, R
VFO
= 2940 W, C
OSC
= 300 pF, R
T
= 2370 W, CT = 300 pF, CL = 1.0 nF. For typical values
T
A
= 25°C, for min/max values TA is the operating ambient temperature range that applies (Note 3), unless otherwise noted.)
Characteristic
Symbol Min Typ Max Unit
REFERENCE SECTION
Reference Output Voltage (I
O
= 0 mA, TJ = 25°C) V
ref
5.0 5.1 5.2 V
Line Regulation (VCC = 10 V to 18 V) Reg
line
− 1.0 20 mV
Load Regulation (IO = 0 mA to 10 mA) Reg
load
− 1.0 20 mV
Total Output Variation Over Line, Load, and Temperature V
ref
4.9 − 5.3 V
Output Short Circuit Current
(0°C to 70°C) (−40°C to 85°C)
I
O
30 25
100 100
190 225
mA
Reference Undervoltage Lockout Threshold V
th
3.8 4.3 4.8 V
ERROR AMPLIFIER
Input Offset Voltage (V
CM
= 1.5 V) V
IO
− 1.0 10 mV
Input Bias Current (VCM = 1.5 V) I
IB
− 0.2 1.0
mA
Input Offset Current (VCM = 1.5 V) I
IO
− 0 0.5
mA
Open Loop Voltage Gain (VCM = 1.5 V, VO = 2.0 V) A
VOL
70 100 − dB
Gain Bandwidth Product (f = 100 kHz)
T
A
= 25°C
T
A
= T
low
to T
high
GBW
3.0
2.7
5.0
−
−
−
MHz
Input Common Mode Rejection Ratio (VCM = 1.5 V to 5.0 V) CMR 70 95 − dB
Power Supply Rejection Ratio (VCC = 10 V to 18 V, f = 120 Hz) PSR 80 100 − dB
Output Voltage Swing
High State (I
source
= 2.0 mA)
Low State (I
sink
= 4.0 mA)
V
OH
V
OL
2.8
−
3.2
0.6
−
0.8
V
1. Maximum package power dissipation limits must be observed.
2. Adjust V
CC
above the Startup Threshold voltage before setting to 12 V.
3. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
4. T
low
=0°C for MC34067 = − 40°C for MC33067
T
high
=+70°C for MC34067 =+85°C for MC33067
MC34067, MC33067
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4
ELECTRICAL CHARACTERISTICS (continued) (V
CC
= 12 V [Note 6], R
OSC
= 18.2 k, R
VFO
= 2940 W, C
OSC
= 300 pF,
R
T
= 2370 W, CT = 300 pF, CL = 1.0 nF. For typical values TA = 25°C, for min/max values TA is the operating ambient temperature range
that applies (Note 7), unless otherwise noted.)
Characteristic
Symbol Min Typ Max Unit
OSCILLATOR
Frequency (Error Amp Output Low)
Total Variation (V
CC
= 10 V to 18 V, TA = T
Low
to T
High
) f
OSC(low)
490 525 550
kHz
Frequency (Error Amp Output High)
Total Variation (V
CC
= 10 V to 18 V, TA = T
Low
to T
High
) f
OSC(high)
1850 2050 2200
kHz
Oscillator Control Input Voltage, Pin 3 V
in
− 2.5 − V
ONE−SHOT
Drive Output Off−Time
T
A
= 25°C
Total Variation (V
CC
= 10 V to 18 V, TA = T
Low
to T
High
)
t
Blank
235 225
250
−
270 280
ns
DRIVE OUTPUTS
Output Voltage
Low State (I
Sink
= 20 mA)
Low State (I
Sink
= 200 mA)
High State (I
Source
= 20 mA)
High State (I
Source
= 200 mA)
V
OL
V
OH
−
−
9.5
9.0
0.8
1.5
10.3
9.7
1.2
2.0
−
−
V
Output Voltage with UVLO Activated (VCC = 6.0 V, I
Sink
= 1.0 mA) V
OL(UVLO)
− 0.8 1.2 V
Output Voltage Rise Time (CL = 1.0 nF) t
r
− 20 50 ns
Output Voltage Fall Time (CL = 1.0 nF) t
f
− 15 50 ns
FAULT COMPARATOR
Input Threshold V
th
0.93 1.0 1.07 V
Input Bias Current (V
Pin 10
= 0 V) I
IB
− − 2.0 − 10
mA
Propagation Delay to Drive Outputs (100 mV Overdrive) t
PLH(In/Out)
− 60 100 ns
SOFT−START
Capacitor Charge Current (V
Pin 11
= 2.5 V) I
chg
4.5 9.0 14
mA
Capacitor Discharge Current (V
Pin 11
= 2.5 V) I
dischg
3.0 8.0 − mA
UNDERVOLTAGE LOCKOUT
Startup Threshold, V
CC
Increasing Enable/UVLO Adjust Pin Open Enable/UVLO Adjust Pin Connected to V
CC
V
th(UVLO)
14.8
8.0
16
9.0
17.2 10
V
Minimum Operating Voltage After Turn−On, VCC Decreasing
Enable/UVLO Adjust Pin Open Enable/UVLO Adjust Pin Connected to V
CC
V
CC(min)
8.0
7.6
9.0
8.6
10
9.6
V
Enable/UVLO Adjust Shutdown Threshold Voltage V
th(Enable)
6.0 7.0 − V
Enable/UVLO Adjust Input Current (Pin 9 = 0 V) I
in(Enable)
− − 0.2 − 1.0 mA
TOTAL DEVICE
Power Supply Current (Enable/UVLO Adjust Pin Open)
Startup (V
CC
= 13.5 V)
Operating (f
OSC
= 500 kHz) (Note 6)
I
CC
−
−
0.5 27
0.8 35
mA
5. Maximum package power dissipation limits must be observed.
6. Adjust V
CC
above the Startup Threshold voltage before setting to 12 V.
7. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
8. T
low
=0°C for MC34067 = − 40°C for MC33067
T
high
=+70°C for MC34067 =+85°C for MC33067
MC34067, MC33067
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5
A
VOL
, OPEN LOOP VOLTAGE GAIN (dB)
R
T
Ω, TIMING RESISTOR (k )
R
OSC
Ω, OSCILLATOR TIMING RESISTOR (k )
One-Shot Period is Measured at the Drive Outputs.
Oscillator Discharge Time is Measured at the Drive Outputs.
f
OSC
C
OSC
= 200 pF
60
30
20
10
6.0
3.0
500
0
, OSCILLATOR FREQUENCY (kHz)
t
dischg
, OSCILLATOR DISCHARGE TIME (ms)
3500
3000
2500
2000
1500
1000
I
OSC
, OSCILLATOR CONTROL CURRENT (mA)
0.35
0.30
0.25
0.20
0.15
0.10
I
OSC
, OSCILLATOR CONTROL CURRENT (mA)
t
OS
, ONE-SHOT PERIOD (ms)
0
0.05
200
VCC = 12 V T
A
= 25°C
R
OSC
= 18.2 k
400
300
100
500
C
OSC
= 300 pF
0
-10
-20
-30
-40
-50
50
40
30
20
10
0
f, FREQUENCY (Hz)
, REFERENCE OUTPUT VOLTAGE CHANGE (mV)
TA, AMBIENT TEMPERATURE (°C)
-20
∇
-10
Gain
V
ref
50
60
70
80
90
100
120
110
0, EXCESS PHASE (DEGREES)
C
OSC
= 500 pF
C
OSC
= 300 pF
VCC = 12 V R
VFO
= ∞
R
T
= ∞ CT = 500 pF T
A
= 25°C
Figure 2. Oscillator Timing Resistor
versus Discharge Time
Figure 3. Oscillator Frequency versus
Oscillator Control Current
Figure 4. Error Amp Output Low State Voltage
versus Oscillator Control Current
Figure 5. One−Shot Timing Resistor
versus Period
Figure 6. Open Loop Voltage Gain and Phase
versus Frequency
Figure 7. Reference Output Voltage Change
versus Temperature
0 400 800 1200 1600 200
0
0 20406080100
0 0.5 1.0 1.5 2.0 2.5 3.0 0.1 0.3 0.6 1.0 3.0 6.0 10
10 k 100 k 1.0M 10M
-55 -25 0 25 50 75 125100
VCC = 12 V V
O
= 2.0 V
R
L
= 100 k
T
A
= 25°C
VCC = 12 V R
L
= ∞
*V
ref at
TA = 25°C
VCC = 12 V C
OSC
= 500 pF
R
OSC
= 100 k
T
A
= 25°C
Phase Margin
= 64°
*V
ref
= 5.1 V
CT = 200 pF
CT = 300 pF CT = 500 pF
Phase
*V
ref
= 5.2 V
*V
ref
= 5.0 V
V
OL
, OUTPUT LOW STATE VOLTAGE (V)
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