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STR-S6707 THRU STR-S6709
OFF-LINE SWITCHING REGULATORS WITH BIPOLAR SWITCHING TRANSISTOR
COLLECTOR 1
COMMON
2
FAULT
The STR-S6707, STR-S6708, and STR-S6709 are specifically designed to meet the requirement for increased integration and reliability in off-line quasi-resonant flyback converters. These devices incorporate the primary control and proportional drive circuit with a thirdgeneration high-voltage bipolar switching transistor. Crucial system parameters such as maximum ON time and OFF time are fixed during manufacture. Local control circuit decoupling and layout are optimized within each device. Cycle-by-cycle current limiting, under-voltage lock-out with hysteresis, over-voltage protection, and thermal shutdown protect these devices during all normal and overload conditions. Over-voltage protection and thermal shutdown are latched after a short delay. A versatile triple-level inhibit circuit includes the OFF time synchronization required to establish quasi-resonant operation. The inhibit function has also been expanded to initiate operation in stand-by mode in which the power supply delivers a small fraction of the steady-state output power. The dual requirements of dielectric isolation and low transient thermal impedance and steady-state thermal resistance are satisfied in an overmolded single-in-line power package. Proven in substantial volumes, these devices and their fixedfrequency counterparts represent a significant advance in off-line SMPS reliability growth and integration.
Data Sheet 28113
BASE
3 S
DRIVE FAULT LATCH
SINK
4
OSC.
R DRIVE OVER-CURRENT PROTECTION FDBK 5
6
+ REF.
7
INHIBIT
8
V IN
9
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VIN ........................... 15 V Output Voltage, VCEX ....................... 850 V VEBO ................................................ 7 V Continuous Output Current, IC .......................................... See Table 1 ms Single-Pulse Output Current, ICM ........................................ See Table Sink Current, IS ......................... See Table Drive Current, ID .......................... -700 mA Feedback Current, IFDBK ................. 20 mA Inhibit Voltage, VINH ........................... 15 V Over-Current Protection Voltage Range, VOCP ............................................ ±3.5 V Insulation Voltage,VWM(RMS) ........... 2000 V Package Power Diss., PD ........ See Graph Output Junction Temperature, TJ .. +150°C Internal Frame Temperature, TF ... +125°C Operating Temperature Range, TA ............................... -20°C to +125°C Storage Temperature Range, Tstg ............................. -40°C to +125°C
+ UVLO
Dwg. PK-001
FEATURES
I I I I I I I I I Quasi-Resonant Operation for Low EMI and High Efficiency Output Power to 220 W Low-Power Output Standby Mode Pulse-by-Pulse Over-Current Protection Latched Over-Voltage and Thermal Protection Third-Generation Switching Transistor with Proportional Drive Maximum ON Time and Off Time Set During Manufacture Internal Under-Voltage Lockout with Hysteresis Over-Molded SIP with Integral Isolated Heat Spreader
Always order by complete part number: Max. Cont. Peak Part Number Current, IC Current, ICM STR-S6707 STR-S6708 STR-S6709 6A 7.5 A 10 A 12 A 15 A 20 A
Max. Sink Current, IS 1.5 A 1.5 A 2A
TM
STR-S6707 THRU STR-S6709 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS
STR-S6707 AND STR-S6708 FUNCTIONAL BLOCK DIAGRAM
V IN 9 INHIBIT 8
UVLO OVER-VOLT. PROTECT
R FAULT LATCH S Q PROPORTIONAL DRIVE 1 k 5 DRIVE
REF.
4 TSD OSC. 3 Rton + 0.75 V + FDBK 7 3300 pF Rtoff + 1.4 V -1 V 6 + 5.1 V 2 1 0.7
SINK
BASE
COLLECTOR
COMMON
OVER-CURRENT PROTECTION
Dwg. FK-001
ALLOWABLE PACKAGE POWER DISSIPATION
30
MAXIMUM SAFE OPERATING AREA
60
STR-S6709 (20 A)
ALLOWABLE PACKAGE POWER DISSIPATION in WATTS
54 W
MOUNTING SURFACE TEMPERATURE
10
STR-S6708 (15 A) STR-S6707 (12 A)
40
RECOMMENDED MAX. FRAME TEMP. = +100°C
COLLECTOR CURRENT in AMPERES
5.0
3.0 L = 6 mH IB1 = 2.5 A (STR-S6707/08) or 3 A (STR-S6709) IB2 = 0.8 A (STR-SA6707/08) or 1.2 A (STR-S6709) ton = 100 µs dc < 1% 1.0
LIMITED BY FRAME TEMP. = +125°C MAX. 20
FREE AIR
0.5
3.2 W 0 20 60 100 TEMPERATURE in °C 140
Dwg. GK-003-2
0.3 0 200 400 600 800 1000
Dwg. GK-002
COLLECTOR-EMITTER VOLTAGE in VOLTS
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1994 Allegro MicroSystems, Inc.
TM
STR-S6707 THRU STR-S6709 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS
STR-S6709 FUNCTIONAL BLOCK DIAGRAM AS ABOVE EXCEPT FOR SINK OUTPUT
4 20
SINK
ELECTRICAL CHARACTERISTICS at TA = +25°C, VIN = 8.5 V, voltage measurements are referenced to Common (pin 2) (unless otherwise noted).
Characteristic On-State Voltage Under-Voltage Lockout Over-Voltage Threshold Output Leakage Current Output Saturation Voltage Symbol VINT VINQ VOVP(th) ICEX VCE(sat) Test Conditions Turn-on, increasing VIN Turn-off, decreasing VIN VCE = 850 V, VBE = -1.5 V STR-S6707, IC = 2 A, IB = 400 mA STR-S6708, IC = 3 A, IB = 600 mA STR-S6709, IC = 4 A, IB = 800 mA STR-S6707, IC = 2 A, IB = 400 mA STR-S6708, IC = 3 A, IB = 600 mA STR-S6709, IC = 4 A, IB = 800 mA VCE = 4 V, IC = 1 A Limits Min. Typ. Max. 7.6 8.0 8.4 4.6 4.9 5.2 9.2 10.7 100 400 400 400 1.5 1.5 1.5 29 61 33 41 45 55 -0.9 -1.0 -1.1 650 0.65 0.75 0.85 1.4 2.0 3.2 5.1 5.6 500 2.5 3.1 15 29 200 2000 125 150 2.0 Units V V V µA mV mV mV V V V µs µs V mV V V V µA V mA µA V °C °C/W
VBE(sat)
DC Current Gain Maximum ON Time Minimum OFF Time Over-Current Threshold Feedback Threshold Volt. Inhibit Threshold Voltage
hFE ton toff VOCP(th) VFDBK(th) VINH(th)
Latch Holding Current Latch Reset Voltage Supply Current Insulation RMS Voltage Thermal Shutdown Thermal Resistance
IINH VQ IIN(ON) IIN(OFF) VWM(RMS) TJ RJM
Oscillation stops Oscillation synchronized Oscillation stops (fault latch set) VIN reduced from 10.7 V to 4 V IIN 100 µA, VIN reduced from 10.7 V Operating All terminals simultaneous reference metal plate against backside Output junction to mounting surface
NOTES: Negative current is defined as coming out of (sourcing) the specified device terminal. Typical Data is for design information only.
www.allegromicro.com
STR-S6707 THRU STR-S6709 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS
TYPICAL CHARACTERISTICS
100
50
30
DC CURRENT GAIN
VCE 4 V = 10 STR-S6709 STR-S6708 STR-S6707
5.0
3.0
1.0 0.01 0.03 0.1 1.0 10 0.3 3.0 COLLECTOR CURRENT in AMPERES 30 100
Dwg. GK-001
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
TM
STR-S6707 THRU STR-S6709 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS
TYPICAL QUASI-RESONANT FLYBACK CONVERTER
WARNING: lethal potentials are present. See text.
+ OUTPUT
9
FULL-BRIDGE RECTIFIER
AC INPUT 100 V/120 V
R
+
S Q 5
3
+
1
+ 7 +
2
6 +
#
Dwg. EK-004A
APPLICATIONS INFORMATION WARNING -- These devices are designed to be operated at lethal voltages and energy levels. Circuit
designs that embody these components must conform with applicable safety requirements. Precautions must be taken to prevent accidental contact with power-line potentials. Do not connect grounded test equipment. The use of an isolation transformer is recommended during circuit development and breadboarding. Recommended mounting hardware torque: 4.34 5.79 lbf·ft (6 8 kg·cm or 0.588 0.784 Nm). Recommended metal-oxide-filled, alkyl-degenerated oil base, silicone grease: Dow Corning 340, or equivalent
www.allegromicro.com
+
4
+
8
+ +
VOLTAGE SENSE
OUTPUT
STR-S6707 THRU STR-S6709 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS
Dimensions in Inches
(for reference only)
0.953 ±0.008 0.610
±0.008
0.118
T M REF. 0.130 ø
±0.008
0.216
±0.008
1.49 ±0.012
0.709 ±0.008
0.130
±0.004
0.276
±0.016
0.216 1 0.033
+0.008 0.004
0.016
9 0.100
±0.004
0.026 0.177
±0.028 +0.008 0.004
PACKAGE CENTER
LEAD CENTER
Dwg. MK-003-9 in
NOTE: Exact body and lead configuration at vendor's option within limits shown.
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
TM
STR-S6707 THRU STR-S6709 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS
Dimensions in Millimeters
(controlling dimensions)
24.2 ±0.2 15.5 ±0.2 3.0 REF M 3.3 ø T 5.5
±0.2
±0.2
23.0 ±0.3
18.0 ±0.2
3.3
±0.1
7.0
±0.4
5.5 1 0.85
+0.2 0.1
0.4
9 2.54
±0.1
0.65
+0.2 0.1
4.5
±0.7
PACKAGE CENTER
LEAD CENTER
Dwg. MK-003-9 mm
NOTE: Exact body and lead configuration at vendor's option within limits shown.
www.allegromicro.com
STR-S6707 THRU STR-S6709 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS
SWITCHING REGULATOR PMCMs
Part Number* 3002M 3004M S5703 S5707 S5708 S6703 S6704 S6707 S6708 S6709 8033S 8050S 8090S 8120S 8150S Application 5 V switching regulator and a 9 V switching regulator 5 V switching regulator and Dual 9 V switching regulator Quasi-resonant flyback converter Quasi-resonant flyback converter Quasi-resonant flyback converter Quasi-resonant flyback converter Quasi-resonant flyback converter Quasi-resonant flyback converter Quasi-resonant flyback converter Quasi-resonant flyback converter 3.3 V switching regulator 5.0 V switching regulator 9.0 V switching regulator 12 V switching regulator 15 V switching regulator VI 7.0-33 V 7.0-33 V 110/120 V 85-265 V 220/240V 85-265 V 220/240 V 110/120V 110/120 V 85-265 V 220/240 V 85-265 V 220/240 V 85-265 V 220/240 V 5.5-28 V 7.0-40 V 12-40V 15-40 V 18-40 V Max PO 140 W 90 W 140 W 120 W 180 W 140 W 100 W 90 W 140 W 120 W 180 W 160 W 220 W 500 V 850 V 850 V 500 V 500 V 850 V 850 V 850 V Power Switch 500 mA 400 mA 500 mA 2 x 400 mA 6A 6A 7.5 A 6A 5A 6A 7.5 A 10 A 3A 3A 3A 3A 3A bipolar bipolar bipolar bipolar bipolar bipolar bipolar bipolar bipolar bipolar bipolar bipolar bipolar bipolar bipolar bipolar bipolar
* Complete part number includes additional characters to indicate operating temperature range and/or package style. Also includes linear regulator output for 15.7 V at 1.0 A. Without heat sink.
The products described here are manufactured in Japan by Sanken Electric Co., Ltd. for sale by Allegro MicroSystems, Inc. Sanken Electric Co., Ltd. and Allegro MicroSystems, Inc. reserve the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of their products. Therefore, the user is cautioned to verify that the information in this publication is current before placing any order. These products are not authorized for use as critical components in life-support appliances, devices, or systems without express written approval. The information included herein is believed to be accurate and reliable. However, Sanken Electric Co., Ltd. and Allegro MicroSystems, Inc. assume no responsibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use.
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
TM