Motorola MC34065P-L, MC34065DW-H, MC34065DW-L, MC33065P-L, MC33065DW-H Datasheet
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Order this document by MC34065–H/D
The MC34065–H,L series are high performance, fixed frequency, dual
current mode controllers. They are specifically designed for off–line and
dc–to–dc converter applications offering the designer a cost effective
solution with minimal external components. These integrated circuits feature
a unique oscillator for precise duty cycle limit and frequency control, a
temperature compensated reference, two high gain error amplifiers, two
current sensing comparators, Drive Output 2 Enable pin, and two high
current totem pole outputs ideally suited for driving power MOSFETs.
Also included are protective features consisting of input and reference
undervoltage lockouts each with hysteresis, cycle–by–cycle current limiting,
and a latch for single pulse metering of each output. These devices are
available in dual–in–line and surface mount packages.
The MC34065–H has UVLO thresholds of 14 V (on) and 10 V (off), ideally
suited for off–line converters. The MC34065–L is tailored for lower voltage
applications having UVLO thresholds of 8.4 V (on) and 7.8 V (off).
• Unique Oscillator for Precise Duty Cycle Limit and Frequency Control
• Current Mode Operation to 500 kHz
• Automatic Feed Forward Compensation
• Separate Latching PWMs for Cycle–By–Cycle Current Limiting
• Internally Trimmed Reference with Undervoltage Lockout
• Drive Output 2 Enable Pin
• Two High Current Totem Pole Outputs
• Input Undervoltage Lockout with Hysteresis
• Low Startup and Operating Current
Representative Block Diagram
V
CC 16
V
V
ref
Sync Input
R
T
C
T
Voltage
Feedback 1
Compensation 1
Drive Output
2
Enable
Voltage
Feedback 2
Compensation 2
5.0V
15
1
3
2
4
5
14
13
12
R
R
+
–
Error
Amp 1
+
–
Error
Amp 2
Oscillator
Reference
V
ref
Undervoltage
Lockout
Gnd 8 Drive Gnd 9
CC
Undervoltage
Lockout
Latching
PWM 1
Latching
PWM 2
Drive Output 1
7
Current Sense 1
6
Drive Output 2
10
Current Sense 2
11
HIGH PERFORMANCE
DUAL CHANNEL CURRENT
MODE CONTROLLERS
SEMICONDUCTOR
TECHNICAL DATA
P SUFFIX
PLASTIC PACKAGE
CASE 648
DW SUFFIX
PLASTIC PACKAGE
CASE 751G
(SO–16L)
PIN CONNECTIONS
Sync Input
C
R
Voltage Feedback 1
Compensation 1
Current Sense 1
Drive Output 1
Gnd
ORDERING INFORMATION
Device
MC34065DW–H
MC34065DW–L
MC34065P–H
MC34065P–L
MC33065DW–H
MC33065DW–L
MC33065P–H
MC33065P–L
1
2
T
3
T
4
5
6
7
89
Temperature Range
TA = 0° to +70°C
TA = –40° to +85°C
16
15
14
13
12
11
10
(T op V iew)
Operating
V
CC
V
ref
Drive Output 2 Enable
Voltage Feedback 2
Compensation 2
Current Sense 2
Drive Output 2
Drive Gnd
Package
SO–16L
Plastic DIP
SO–16L
Plastic DIP
MOTOROLA ANALOG IC DEVICE DATA
Motorola, Inc. 1996 Rev 0
1
MC34065–H, L MC33065–H, L
MAXIMUM RATINGS
Rating Symbol Value Unit
Power Supply Voltage V
Output Current, Source or Sink (Note 1) I
Output Energy (Capacitive Load per Cycle) W 5.0 µJ
Current Sense, Enable, and Voltage Feedback Inputs V
Sync Input
High State (Voltage)
Low State (Reverse Current)
Error Amp Output Sink Current I
Power Dissipation and Thermal Characteristics
DW Suffix, Plastic Package Case 751G
Maximum Power Dissipation @ TA = 25°C
Thermal Resistance, Junction–to–Air
P Suffix, Plastic Package Case 648
Maximum Power Dissipation @ TA = 25°C
Thermal Resistance, Junction–to–Air
Operating Junction Temperature T
Operating Ambient Temperature (Note 3)
MC34065
MC33065
Storage Temperature Range T
CC
O
in
V
IH
I
IL
O
P
D
RθJA
P
D
RθJA
J
T
A
stg
20 V
400 mA
– 0.3 to +5.5 V
+5.5
– 5.0
10 mA
862
145
1.25
100
+150 °C
0 to +70
– 40 to +85
– 65 to +150 °C
V
mA
mW
°C/W
mW
°C/W
°C
ELECTRICAL CHARACTERISTICS (V
TA is the operating ambient temperature range that applies to [Note 3].)
Characteristics Symbol Min Typ Max Unit
REFERENCE SECTION
Reference Output Voltage (IO = 1.0 mA, TJ = 25°C) V
Line Regulation (VCC = 11 V to 20 V) Reg
Load Regulation (IO = 1.0 mA to 10 mA, VCC = 20 V) Reg
Total Output Variation over Line, Load, and Temperature V
Output Short Circuit Current I
OSCILLATOR AND PWM SECTIONS
Total Frequency Variation over Line and Temperature
VCC = 11 V to 20 V, TA = T
MC34065
MC33065
Frequency Change with Voltage (VCC = 11 V to 20 V) ∆f
Duty Cycle at each Output
Maximum
Minimum
Sync Input Current
High State (Vin = 2.4 V)
Low State (Vin = 0.8 V)
ERROR AMPLIFIERS
Voltage Feedback Input (VO = 2.5 V) V
Input Bias Current (VFB = 5.0 V) I
Open Loop Voltage Gain (VO = 2.0 V to 4.0 V) A
Unity Gain Bandwidth (TJ = 25°C) BW 0.7 1.0 – MHz
Power Supply Rejection Ratio (VCC = 11 V to 20 V) PSRR 60 90 – dB
Output Current
Source (VO = 3.0 V, VFB = 2.3 V)
Sink (VO = 1.2 V, VFB = 2.7 V)
Output Voltage Swing
High State (RL = 15 k to ground, VFB = 2.3 V)
Low State (RL = 15 k to V
to T
low
, VFB = 2.7 V)
ref
high
= 15 V [Note 2], RT = 8.2 kΩ, CT = 3.3 nF, for typical values TA = 25°C, for min/max values
CC
ref
line
load
ref
SC
f
osc
/∆V – 0.2 1.0 %
osc
DC
max
DC
min
I
IH
I
IL
FB
IB
VOL
I
source
I
sink
V
OH
V
OL
4.85 5.0 5.13 V
– 2.0 20 mV
– 3.0 25 mV
4.8 – 5.15 V
30 100 – mA
46.5
45
46
–
–
–
2.45 2.5 2.55 V
– –0.1 – 1.0 µA
65 100 – dB
0.45
2.0
5.0
–
49
49
49.5
–
170
80
1.0
12
6.2
0.8
51.5
53
52
0
250
160
–
–
–
1.1
kHz
%
µA
mA
V
2
MOTOROLA ANALOG IC DEVICE DATA
MC34065–H, L MC33065–H, L
ELECTRICAL CHARACTERISTICS (V
TA is the operating ambient temperature range that applies to [Note 3].)
Characteristics
CURRENT SENSE SECTION
Current Sense Input Voltage Gain (Notes 4 and 5) A
Maximum Current Sense Input Threshold (Note 4) V
Input Bias Current I
Propagation Delay (Current Sense Input to Output) t
DRIVE OUTPUT 2 ENABLE PIN
Enable Pin Voltage – High State (Output 2 Enabled)
Enable Pin Voltage – Low State (Output 2 Disabled)
Low State Input Current (VIL = 0 V) I
DRIVE OUTPUTS
Output Voltage – Low State (I
Output Voltage – Low State (I
Output Voltage – High State (I
Output Voltage – High State (I
Output Voltage with UVLO Activated (VCC = 6.0 V, I
Output Voltage Rise T ime (CL = 1.0 nF) t
Output Voltage Fall T ime (CL = 1.0 nF) t
UNDERVOLTAGE LOCKOUT SECTION
Startup Threshold (VCC Increasing)
–L Suffix
–H Suffix
Minimum Operating Voltage After Turn–On (VCC Decreasing)
–L Suffix
–H Suffix
TOTAL DEVICE
Power Supply Current
Startup
–L Suffix (VCC = 6.0 V)
–H Suffix (VCC = 12 V)
Operating (Note 2)
NOTES: 1. Maximum package power dissipation limits must be observed.
NOTES: 2. Adjust VCC above the startup threshold before setting to 15 V.
NOTES: 3. Low duty cycle pulse techniques are used during test to maintain junction
NOTES: 3. temperature as close to ambient as possible:
T
= 0°C for the MC34065 T
low
T
= –40°C for the MC33065 T
low
= 20 mA)
sink
= 200 mA)
sink
source
source
= 20 mA)
= 200 mA)
= 15 V [Note 2], RT = 8.2 kΩ, CT = 3.3 nF, for typical values TA = 25°C, for min/max values
CC
PLN(In/Out)
= 1.0 mA) V
Sink
OL(UVLO)
V
4. This parameter is measured at the latch trip point with VFB = 0 V
5. Comparator gain is defined as AV =
= +70°C for MC34065
high
= +85°C for MC33065
high
Symbol Min Typ Max Unit
V
th
IB
2.75 3.0 3.25 V/V
0.9 1.0 1.1 V
– – 2.0 –10 µA
– 150 300 ns
V
IH
V
IL
IB
V
OL
V
OH
3.5
0
–
–
V
1.5
ref
100 250 400 µA
–
1.6
12.8
10
0.3
2.4
13.3
11.2
0.5
3.0
–
12.3
V
V
– 0.1 1.1 V
r
f
V
th
CC(min)
I
CC
– 50 150 ns
– 50 150 ns
7.8
13
7.2
9.0
–
–
–
8.4
14
7.8
10
0.4
0.6
20
∆V Compensation
∆V Current Sense
9.0
15
8.4
11
0.8
1.0
25
V
V
mA
Figure 1. Timing Resistor versus
Oscillator Frequency
16
)
Ω
, TIMING RESISTOR (k
T
R
14
12
10
8.0
6.0
4.0
3.3 nF
5.0 nF
CT=
10 nF
VCC=15V
°
C
TA=25
500 pF
1.0 nF
2.2 nF
100 pF
220 pF
10 k 30 k 50 k 300 k 500 k100 k 1.0 M
f
OSC, OSCILLATOR FREQUENCY (Hz)
MOTOROLA ANALOG IC DEVICE DATA
330 pF
Figure 2. Maximum Output Duty Cycle
versus Oscillator Frequency
50
48
46
44
VCC=15V
42
RT= 4.0 k to 16 k
, DUTY CYCLE MAXIMUM (%)
max
40
DC
38
10 k 30 k 50 k 300 k 500 k100 k 1.0 M
°
TA = 25
CL=15pF
f
OSC, OSCILLATOR FREQUENCY (Hz)
Output 1
Output 2
3
MC34065–H, L MC33065–H, L
Figure 3. Error Amp Small–Signal
Transient Response
2.55 V
2.50 V
2.45 V
1.0 µs/DIV
Figure 5. Error Amp Open Loop Gain and
Phase versus Frequency
100
80
60
Gain
VCC=15V
AV= –1.0
TA=25
VCC=15V
VO= 1.5 V to 2.5 V
RL= 100 k
°
C
TA=25
Figure 4. Error Amp Large–Signal
Transient Response
3.0 V
°
C
2.50 V
20 mV/DIV
2.0 V
1.0 µs/DIV
VCC=15V
AV= –1.0
°
C
TA=25
200 mV/DIV
Figure 6. Current Sense Input Threshold
versus Error Amp Output Voltage
0
30
60
1.2
1.0
0.8
VCC = 15 V
TA = 125°C
40
20
, OPEN LOOP VOL TAGE GAIN (dB)
0
VOL
A
–20
10 100 1.0 k 10 k 100 k 1.0 M 10 M
f, FREQUENCY (Hz)
Phase
Figure 7. Reference V oltage Change
versus Source Current
0
–4.0
–8.0
–12
–16
, REFERENCE VOLTAGE CHANGE (mV)
–20
ref
V
∆
–24
0 20 40 60 80 100 120
I
, REFERENCE SOURCE CURRENT (mA)
ref
TA = 125°C
TA = 25°C
VCC = 15 V
TA = –55°C
90
120
, EXCESS PHASE (DEGREES)
φ
150
180
0.6
0.4
0.2
, CURRENT SENSE INPUT THRESHOLD (V)
th
0
V
0 1.0 2.0 3.0 4.0 7.05.0 6.0
Figure 8. Reference Short Circuit Current
120
100
80
, REFERENCE SHORT CIRCUIT CURRENT (mA)
60
SC
I
–55 –25 0 25 50 75 100 125
TA = 25°C
TA = –55°C
VO, ERROR AMP OUTPUT VOLTAGE (V)
versus T emperature
TA, AMBIENT TEMPERATURE (°C)
VCC=15V
≤
0.1
Ω
R
L
4
MOTOROLA ANALOG IC DEVICE DATA
MC34065–H, L MC33065–H, L
Figure 9. Reference Load Regulation Figure 10. Reference Line Regulation
, OUTPUT VOLTAGE CHANGE (2.0 mV/DIV)
O
V
∆
Figure 11. Output Saturation Voltage
versus Load Current
0
V
–2.0
–4.0
CC
TA= –55°C
VCC=15V
IO= 1.0 mA to 10 mA
°
C
TA=25
, OUTPUT VOLTAGE CHANGE (2.0 mV/DIV)
O
V
1.0 ms/DIV 1.0 ms/DIV
∆
Figure 12. Output Waveform
Source Saturation
(Load to Ground)
TA=25°C
VCC=15V
µ
s Pulsed Load
80
120 Hz Rate
90% –
VCC= 11 V to 15 V
°
C
TA=25
VCC=15V
CL= 1.0 nF
TA=25
°
C
–6.0
4.0
2.0
, OUTPUT SA TURATION VOLTAGE (V)
sat
V
0
0 100 200 300 400
TA= –55°C
TA=25°C
IO, OUTPUT LOAD CURRENT (mA)
Gnd
Sink Saturation
(Load to VCC)
10% –
100 ns/DIV
Figure 13. Output Cross Conduction Current Figure 14. Supply Current versus Supply Voltage
, OUTPUT VOL TAGE 1
O1
, SUPPLY CURRENT
CC
I
VCC=15V
CL=15pF
°
C
TA=25
10 V/DIV
50 mA/DIV
10 V/DIV
32
24
16
, SUPPLY CURRENT (mA)
8.0
CC
I
–L Suffix
RT=10k
CT= 3.3 nF
VFB=0V
Current Sense = 0 V
TA=25
–H Suffix
°
C
, OUTPUT VOL TAGE 2; V
O2
V
100 ns/DIV
MOTOROLA ANALOG IC DEVICE DATA
0
0 4.0 8.0 12 16 20
VCC, SUPPLY VOLTAGE (V)
5
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