MC33066P Motorola, MC33066P Datasheet

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MC33066P

Manufacturer Part Number
MC33066P
Description
High performance resonant mode controller
Manufacturer
Motorola
Datasheet

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MC33066P
Manufacturer:
NIEC
Quantity:
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High Performance
Resonant Mode Controllers
controllers designed for off–line and dc–to–dc converter applications that
utilize frequency modulated constant on–time or constant off–time control.
These integrated circuits feature a variable frequency oscillator with
programmable deadtime, precision retriggerable one–shot timer,
temperature compensated reference, high gain wide–bandwidth error
amplifier with a precision output clamp, steering flip–flop, and dual high
current totem pole outputs ideally suited for driving power MOSFETs.
comparator and latch, programmable soft–start circuitry, input undervoltage
lockout with selectable thresholds, and reference undervoltage lockout.
One–Shot RC
MOTOROLA ANALOG IC DEVICE DATA
UVLO Adjust
Error Amp +
Error Amp –
The MC34066/MC33066 are high performance resonant mode
Also included are protective features consisting of a high speed fault
These devices are available in dual–in–line and surface mount packages.
Variable Frequency Oscillator with a Control Range Exceeding 1000:1
Programmable Oscillator Deadtime Allows Constant Off–Time Operation
Precision Retriggerable One–Shot Timer
Internally Trimmed Bandgap Reference
5.0 MHz Error Amplifier with Precision Output Clamp
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
Osc Control
C Soft–Start
Error Amp
Deadtime
Enable/
Osc RC
Current
V CC
Osc
Out
15
16
11
6
9
1
2
3
8
7
Amplifier
Error
V CC UVLO
Error Amp
Clamp
Simplified Block Diagram
One–Shot
Frequency
Oscillator
Reference
Regulator
Variable
Soft–Start
V ref UVLO
Flip–Flop
Steering
Fault–Detector/
Latch
A out
B out
14
12
10
13
5
4
V ref
Gnd
Drive
Output A
Drive
Output B
Drive Gnd
Fault Input
MC34066DW
MC34066P
MC33066DW
MC33066P
Noninverting Input
Motorola, Inc. 1996
Device
Error Amp Out
Osc Deadtime
Inverting Input
Osc Control
Error Amp
Error Amp
HIGH PERFORMANCE
Osc RC
Current
ORDERING INFORMATION
RESONANT MODE
Gnd
V ref
MC34066
MC33066
CONTROLLERS
PIN CONNECTIONS
SEMICONDUCTOR
TECHNICAL DATA
Order this document by MC34066/D
Temperature Range
T A = – 40 to +85 C
T A = 0 to +70 C
1
2
3
4
5
6
7
8
Operating
(Top View)
PLASTIC PACKAGE
PLASTIC PACKAGE
DW SUFFIX
CASE 751G
CASE 648
P SUFFIX
(SO–16L)
16 One–Shot RC
15
14
13
12
11
10
9
V CC
Drive Output A
Drive Gnd
Drive Output B
C Soft–Start
Fault Input
Enable/UVLO
Adjust
Plastic DIP
Plastic DIP
Package
SO–16L
SO–16L
Rev 1
1

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MC33066P Summary of contents

Page 1

... Drive B out Output B 12 Drive Gnd 13 Device MC34066DW Fault–Detector/ MC34066P Fault Input Latch 10 MC33066DW MC33066P Motorola, Inc. 1996 Order this document by MC34066/D MC34066 MC33066 HIGH PERFORMANCE RESONANT MODE CONTROLLERS SEMICONDUCTOR TECHNICAL DATA P SUFFIX PLASTIC PACKAGE CASE 648 DW SUFFIX PLASTIC PACKAGE CASE 751G (SO– ...

Page 2

... T stg –65 to +150 C Symbol V ref Reg line Reg load V ref VOL GBW CMRR PSRR +85 C for MC33066 MOTOROLA ANALOG IC DEVICE DATA Min Typ Max Unit 5.0 5.1 5.2 V – 1 – 1 4.9 – 5 ...

Page 3

... Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. T low = 0 C for MC34066 T high = +70 C for MC34066 –40 C for MC33066 T high = MOTOROLA ANALOG IC DEVICE DATA MC34066 MC33066 ( [Note 2], R OSC = 95 VFO = 5. OSC = 300 pF, Symbol f OSC(low) ...

Page 4

... Oscillator. High–speed Schottky logic is used throughout the primary control channel to minimize delays and enhance high frequency characteristics. V ref 5 Gnd 4 4.2V/4V Drivers Drive Output Drive R Output B 12 Drive Gnd 13 Fault R Comparator Fault + S 10 Input – Fault 1.0V MOTOROLA ANALOG IC DEVICE DATA ...

Page 5

... Osc Control Current pin. The minimum discharge time for C OSC , which corresponds to the maximum oscillator frequency, is given by Equation 1. MOTOROLA ANALOG IC DEVICE DATA MC34066 MC33066 t dchg(min OSC )C OSC In The minimum oscillator frequency will result when the I OSC current is zero, and C OSC is discharged through the external resistors R OSC and R DT ...

Page 6

... 3 OUT OUT 6 MC34066 MC33066 Figure 3. Timing Waveforms dchg > t One–Shot t dchg < t One–Shot t dchg t off 1 dchg < t One–Shot t chg t dchg off MOTOROLA ANALOG IC DEVICE DATA ...

Page 7

... Error Amp Inverting Input 8 Error Amplifier MOTOROLA ANALOG IC DEVICE DATA MC34066 MC33066 Output Section The pulse generated by the Oscillator and One–Shot timer is gated to dual totem pole output drives by the Steering Flip–Flop shown in Figure 5. Positive transitions toggle the Flip– ...

Page 8

... CCM with this control law. Although the IC is designed and optimized for double ended push–pull type converters, it can also be used for single ended applications, such as forward and flyback resonant converters. V ref 5 – Gnd 4 + 4.2V/4.0V MOTOROLA ANALOG IC DEVICE DATA ...

Page 9

... D 16X 0.010 (0.25 –T– SEATING G 14X K PLANE MOTOROLA ANALOG IC DEVICE DATA MC34066 MC33066 OUTLINE DIMENSIONS P SUFFIX PLASTIC PACKAGE CASE 648–08 ISSUE SEATING –T– PLANE SUFFIX PLASTIC PACKAGE CASE 751G– ...

Page 10

... MC34066 MC33066 NOTES MOTOROLA ANALOG IC DEVICE DATA ...

Page 11

... MOTOROLA ANALOG IC DEVICE DATA MC34066 MC33066 NOTES 11 ...

Page 12

... Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “ ...

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