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MC33065 Datasheet

High Performance Dual Channel Current Mode Controllers

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High Performance
Dual Channel Current
Mode Controller
The MC34065 is a high performance, fixed frequency, dual current mode
controllers. It is specifically designed for off–line and dc–to–dc converter
applications offering the designer a cost effective solution with minimal
external components. This integrated circuit 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.
The MC34065 and MC33065 are available in dual–in–line and surface
mount packages.
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
MC34065
MC33065
HIGH PERFORMANCE
DUAL CHANNEL CURRENT
MODE CONTROLLER
SEMICONDUCTOR
TECHNICAL DATA
P SUFFIX
PLASTIC PACKAGE
CASE 648
16
1
DW SUFFIX
PLASTIC PACKAGE
CASE 751G
(SO–16L)
16
1
Vref 15
1
Sync Input
3
RT
CT
2
Voltage
Feedback 1 4
Compensation 1
5
Drive Output 2
Enable 14
Voltage
Feedback 2 13
Compensation 2
12
Representative Block Diagram
5.0 V
R Reference
R Vref
Undervoltage
Lockout
Oscillator
+
Error
Amp 1
VCC 16
VCC
Undervoltage
Lockout
Latching
PWM 1
Drive
7 Output 1
Current
6 Sense 1
+
Error
Amp 2
Latching
PWM 2
Gnd 8
Drive Gnd 9
This device contains 208 active transistors.
Drive
10 Output 2
Current
11 Sense 2
PIN CONNECTIONS
Sync Input 1
CT 2
RT 3
Voltage Feedback 1 4
Compensation 1 5
Current Sense 1 6
Drive Output 1 7
Gnd 8
16 VCC
15 Vref
14
Drive Output 2
Enable
13 Voltage Feedback 2
12 Compensation 2
11 Current Sense 2
10 Drive Output 2
9 Drive Gnd
(Top View)
ORDERING INFORMATION
Device
Operating
Temperature Range Package
MC34065DW
MC34065P
SO–16L
TA = 0° to +70°C Plastic DIP
MC33065DW
MC33065P
SO–16L
TA = –40° to +85°C Plastic DIP
MOTOROLA ANALOG IC DEVICE DATA
3–451


Motorola Electronic Components Datasheet

MC33065 Datasheet

High Performance Dual Channel Current Mode Controllers

No Preview Available !

MC34065 MC33065
MAXIMUM RATINGS
Rating
Total Power Supply and Zener Current
Output Current, Source or Sink (Note 1)
Output Energy (Capacitive Load per Cycle)
Current Sense, Enable, and Voltage Feedback Inputs
Sync Input
High State (Voltage)
Low State (Reverse Current)
Error Amp Output Sink Current
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
Operating Ambient Temperature
MC34065
MC33065
Storage Temperature Range
NOTE: ESD data available upon request.
Symbol
(ICC + IZ)
IO
W
Vin
Value
50
1.0
5.0
–0.3 to +5.5
Unit
mA
A
µJ
V
VIH 5.5 V
IIL –5.0 mA
IO 10 mA
PD
RθJA
PD
RθJA
TJ
TA
Tstg
862 mW
145 °C/W
1.25
100
+150
W
°C/W
°C
0 to +70
–40 to +85
°C
–65 to +150 °C
ELECTRICAL CHARACTERISTICS (VCC = 15 V [Note 2], RT = 8.2 k, CT = 3.3 nF, for typical values TA = 25°C, for
min/max values TA is the operating ambient temperature range that applies [Note 3].)
Characteristics
Symbol
Min Typ Max
REFERENCE SECTION
Reference Output Voltage (IO = 1.0 mA, TJ = 25°C)
Line Regulation (VCC = 11 V to 15 V)
Load Regulation (IO = 1.0 mA to 10 mA)
Total Output Variation over Line, Load, and Temperature
Output Short Circuit Current
Vref
Regline
Regload
Vref
ISC
4.9 5.0
– 2.0
– 3.0
4.85 –
30 100
OSCILLATOR AND PWM SECTIONS
Total Frequency Variation over Line and Temperature
VCC = 11 V to 15 V, TA = Tlow to Thigh
MC34065
MC33065
fosc
46.5 49
45 49
Frequency Change with Voltage (VCC = 11 V to 15 V)
fosc/V – 0.2
Duty Cycle at each Output
Maximum
Minimum
Sync Input Current
High State (Vin = 2.4 V)
Low State (Vin = 0.8 V)
DCmax
DCmin
IIH
IIL
46 49.5
––
– 170
– 80
NOTES: 1. Maximum package power dissipation limits must be observed.
2. Adjust VCC above the startup threshold before setting to 15 V.
3. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible:
Tlow = 0°C for the MC34065
Thigh = +70°C for MC34065
Tlow = –40°C for the MC33065
Thigh = +85°C for MC33065
4. This parameter is measured at the latch trip point with VFB = 0 V
+5. Comparator gain is defined as AV
DV Compensation
DV Current Sense
5.1
20
25
5.15
51.5
53
1.0
52
0
250
160
Unit
V
mV
mV
V
mA
kHz
%
%
µA
3–452
MOTOROLA ANALOG IC DEVICE DATA


Part Number MC33065
Description High Performance Dual Channel Current Mode Controllers
Maker Motorola
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MC33065 Datasheet PDF





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