EVAL6598-100W STMicroelectronics, EVAL6598-100W Datasheet

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EVAL6598-100W

Manufacturer Part Number
EVAL6598-100W
Description
EVAL BOARD FOR L6598
Manufacturer
STMicroelectronics
Datasheet

Specifications of EVAL6598-100W

Main Purpose
AC/DC, Primary Side and PFC
Outputs And Type
1, Isolated
Power - Output
100W
Voltage - Output
24V
Current - Output
4A
Voltage - Input
90 ~ 264VAC
Regulator Topology
Resonant
Board Type
Fully Populated
Utilized Ic / Part
L6563, L6598
Product
Power Management Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-5495

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Part Number:
EVAL6598-100W
Manufacturer:
ST
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Features
October 2009
Figure 1.
High voltage rail up to 600 V
dV/dt immunity ±50 V/ns in full temperature
range
Driver current capability: 250 mA source
450 mA sink
Switching times 80/40 ns rise/fall with 1 nF load
CMOS shutdown input
Undervoltage lock-out
Soft-start frequency shifting timing
Sense op amp for closed loop control or
protection features
High accuracy current controlled oscillator
Integrated bootstrap diode
Clamping on Vs
SO16, DIP16 packages
Block diagram
Doc ID 6554 Rev 7
Description
The device is manufactured with the BCD OFF
LINE technology, able to ensure voltage ratings
up to 600 V, making it perfectly suited for AC/DC
Adapters and wherever a resonant topology can
be beneficial. The device is intended to drive two
power MOSFET, in the classical half bridge
topology. A dedicated timing section allows the
designer to set soft start time, soft start and
minimum frequency. An error amplifier, together
with the two enable inputs, are made available. In
addition, the integrated bootstrap diode and the
zener clamping on low voltage supply, reduces to
a minimum the external parts needed in the
applications.
High voltage resonant controller
L6598
www.st.com
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EVAL6598-100W Summary of contents

Page 1

Features ■ High voltage rail up to 600 V ■ dV/dt immunity ±50 V/ns in full temperature range ■ Driver current capability: 250 mA source 450 mA sink ■ Switching times 80/40 ns rise/fall with 1 nF load ■ CMOS ...

Page 2

Contents Contents 1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

L6598 1 Maximum ratings Table 1. Absolute maximum ratings Symbol I Supply current Low side output V LVG High side reference V OUT High side output V HVG Floating supply voltage V BOOT VBOOT pin slew rate ...

Page 4

Electrical characteristics 2 Electrical characteristics BOOT Table 4. Electrical characteristics Symbol Pin Supply voltage V suvp V suvn V suvh High voltage section I 16 bootleak I ...

Page 5

L6598 Table 4. Electrical characteristics (continued) Symbol Pin ref IVref 2, 4 Timing section Sense op amp out I 5 out- I out+ V ...

Page 6

Pin connections 3 Pin connections Figure 2. Pin connections Table 5. Pin description Pin n° Name fstart fmin out on on+ ...

Page 7

L6598 4 Timing diagram Figure 3. EN2 timing diagrams Figure 4. EN1 timing diagrams Doc ID 6554 Rev 7 Timing diagram 7/24 ...

Page 8

Timing diagram Figure 5. Oscillator/output timing diagram 8/24 Doc ID 6554 Rev 7 L6598 ...

Page 9

L6598 5 Block diagram description 5.1 High/low side driving section An high and low side driving section provide the proper driving to the external power MOS or IGBT. An high sink/source driving current (450/250 mA typ) ensure fast switching times ...

Page 10

Block diagram description At the start- the oscillator frequency is set by: Equation 3 At the end of soft start ( frequency is set only by Imin (i.e. R Equation 4 Since the second term ...

Page 11

L6598 The degree of approximation depends on the frequency value, but it remains very good in the range from 30 kHz to 100 kHz (figg.9-13) Figure 7. Oscillator block Doc ID 6554 Rev 7 Block diagram description 11/24 ...

Page 12

Block diagram description Figure 8. Typ. f vs. R min fmin Figure 10. Typ vs. start min 470 pF fstar f 12/ 470 pF Figure 9. Figure 11. f Doc ...

Page 13

L6598 Figure 12. Typ vs. start min 470 pF fstar f 5.3 Bootstrap section The supply of the high voltage section is obtained by means of a bootstrap circuitry. This solution normally requires ...

Page 14

Block diagram description The bootstrap driver introduces a voltage drop during the recharging of the capacitor Cboot (i.e. when the low side driver is on), which increases with the frequency and with the size of the external power MOS. It ...

Page 15

L6598 5.5 Comparators Two CMOS comparators are available to perform protection schemes. ≥ Short pulses ( 200 ns) on comparators input are recognized. The EN1 input (active high), has a threshold of 0.6 V (typical value) forces the device in ...

Page 16

Block diagram description Figure 16. Typ. fmin vs. temperature Figure 18. Typ. fstart vs. temperature 16/24 Figure 17. Start-up current vs temperature Figure 19. Quiescent current vs temperature Doc ID 6554 Rev 7 L6598 ...

Page 17

L6598 Figure 20. Vs thresholds and clamp vs temp. Figure 22. LVG source and sink current vs. temperature Figure 21. HVG source and sink current vs. temperature Figure 23. Soft-start timing constant vs. temperature Doc ID 6554 Rev 7 Block ...

Page 18

Block diagram description Figure 24. Wide range AC/DC adapter application 18/24 Doc ID 6554 Rev 7 L6598 ...

Page 19

L6598 6 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ...

Page 20

Package mechanical data DIM 20/24 Plastic DIP-16 (0.25) MECHANICAL DATA mm. MIN. TYP MAX. 0.51 0.77 1.65 0.5 0.25 20 8.5 2.54 17.78 7.1 5.1 3.3 1.27 Doc ...

Page 21

L6598 DIM SO-16 MECHANICAL DATA mm. MIN. TYP MAX. 1.75 0.1 0.25 1.64 0.35 0.46 0.19 0.25 0.5 45° (typ.) 9.8 10 5.8 6.2 ...

Page 22

Ordering codes 7 Ordering codes Table 6. Ordering information Order codes L6598 L6598D L6598D016TR 22/24 Package DIP16 SO16N Doc ID 6554 Rev 7 L6598 Packing Tube Tube Tape and reel ...

Page 23

L6598 8 Revision history Table 7. Document revision history Date 21-Jun-2004 09-Sep-2004 02-Oct-2009 Revision Changed the impagination following the new release of “corporate 5 technical pubblication design guide”. Done a few of corrections in the text. Added ordering number fot ...

Page 24

... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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