STEVAL-ISA004V1 STMicroelectronics, STEVAL-ISA004V1 Datasheet
![EVAL BOARD DUAL OUTPUT VIPER22A](/photos/9/13/91315/steval-isa004v1_sml.jpg)
STEVAL-ISA004V1
Specifications of STEVAL-ISA004V1
Related parts for STEVAL-ISA004V1
STEVAL-ISA004V1 Summary of contents
Page 1
Features ■ Fixed 60 kHz switching frequency ■ wide range V DD ■ Current mode control ■ Auxiliary undervoltage lockout with hysteresis ■ High voltage start-up current source ■ Overtemperature, overcurrent and overvoltage protection with ...
Page 2
Contents Contents 1 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 3
VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E 1 Electrical data 1.1 Maximum ratings Stressing the device above the rating listed in the “absolute maximum ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at ...
Page 4
Electrical characteristics 2 Electrical characteristics ° unless otherwise specified J DD Table 4. Power section Symbol Parameter BV Drain-source voltage DSS OFF state drain I DSS current Static drain-source r DS(on) ON state ...
Page 5
VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E Table 6. Oscillation section Symbol Parameter Oscillator frequency F OSC total variation Table 7. PWM comparator section Symbol Parameter Peak current I Dlim limitation I I shutdown current FBsd FB ...
Page 6
Pin connections and function 3 Pin connections and function Figure 2. Pin connection SOURCE 1 SOURCE VDD 4 Figure 3. Current and voltage conventions Table 10. Pin function Pin Name Power supply of the control circuits. Also ...
Page 7
VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E 4 Operations 4.1 Rectangular U-I output characteristics Figure 4. Rectangular U-I output characteristics for battery charger complete regulation scheme can achieve combined and accurate output characteristics. Figure 4. presents a secondary ...
Page 8
Operations 4.2 Wide range of V The V pin voltage range extends from This feature offers a great flexibility in DD design to achieve various behaviors. In chosen to supply the device with two benefits: ...
Page 9
VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E The Power MOSFET delivers a sense current I R2 receives this current and the current coming from the FB pin. The voltage across R2 is then compared to a fixed reference voltage of about 0.23 V. The ...
Page 10
Operations Figure 6. I transfer function then possible to build the total DC transfer function between I Figure 6 on page 10 associated minimum turn on time. This imposes a minimum drain current under which the device ...
Page 11
VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E 4.4 Startup sequence Figure 7. Startup sequence This device includes a high voltage start up current source connected on the drain of the device. As soon as a voltage is applied on the input of the converter, ...
Page 12
Operations 4.5 Overvoltage threshold An overvoltage detector on the V exceeds V . This is illustrated in DDovp overvoltage event. Note that this event is only latched for the time needed and then the device resumes ...
Page 13
VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E 5 Operation pictures Figure 9. Rise and fall time 90 10% Figure 10. Start-up V Figure 11. Restart duty-cycle DDon V DDoff current DD ...
Page 14
Operation pictures Figure 12. Peak drain current vs feedback current Dpeak 1/F OSC The drain current limitation is obtained for VFB = 0 V, and a negative current is drawn from the FB pin. See the Application ...
Page 15
VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E Figure 14. Switching frequency vs temperature Figure 15. Current limitation vs temperature Doc ID 12050 Rev 2 Operation pictures 15/21 ...
Page 16
Package mechanical data 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 ...
Page 17
VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E Table 11. DIP-8 mechanical data Dim Package Weight Figure 16. Package dimensions Databook (mm.) Min. Nom. 0.38 2.92 3.30 0.36 0.46 1.14 1.52 0.20 ...
Page 18
Package mechanical data Table 12. SO-8 mechanical data Dim ddd Figure 17. Package dimensions 18/21 VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E Databook (mm. Min. Nom. 1.35 0.10 1.10 0.33 0.19 4.80 ...
Page 19
VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E 7 Order codes Table 13. Order codes Order codes VIPER22ASTR-E VIPer22AS-E VIPer22ADIP-E Package SO-8 SO-8 DIP-8 Doc ID 12050 Rev 2 Order codes Packaging Tape and reel Tube Tube 19/21 ...
Page 20
Revision history 8 Revision history Table 14. Document revision history Date 09-Feb-2006 25-Nov-2010 20/21 VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E Revision 1 Initial release. 2 Updated Table 11. Doc ID 12050 Rev 2 Changes ...
Page 21
... VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E 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. ...