Double channel high-side driver with analog current sense

Document overview

  • Manufacturer or author: STMICROELECTRONICS
  • PDF pages: 30

Technical content

Datasheet sections

  • 1 Block diagram and pin description
  • 2 Electrical specifications
  • 2.1 Absolute maximum ratings
  • 2.2 Thermal data
  • 2.3 Electrical characteristics
  • 2.4 Electrical characteristics curves
  • 3 Application information
  • 3.1 Maximum demagnetization energy (V CC = 24 V)
  • 4 Package and PCB thermal data
  • 4.1 PowerSSO-24 thermal data
  • 5 Package and packing information
  • 5.1 PowerSSO-24 package information
  • 5.2 PowerSSO-24 packing information
  • 6 Order codes
  • 7 Revision history

Features

  • General – Very low standby current – 3.0 V CMOS compatible input – Optimized electromagnetic emission – Very low electromagnetic susceptibility – Fault reset standby pin (FR_Stby)
  • Diagnostic functions – Proportional load current sense – High current sense precision for wide range currents – Off-state open load detection – Output short to V CC detection – Overload and short to ground latch off – Thermal shutdown latch-off – Very low current sense leakage
  • Protections – Undervoltage shutdown – Overvoltage clamp – Load current limitation – Self limiting of fast thermal transients – Protection against loss of ground and loss of V CC – Thermal shutdown – Electrostatic discharge protection Application All types of resistive, inductive and capacitive loads

Description

The VPS2535H is a monolithic device made using STMicroelectronics ® VIPower® technology, intended for driving resistive or inductive loads with one side connected to ground. Active V CC pin voltage clamp protects the device against low energy spikes. The device integrates an analog current sense which delivers a current proportional to the load current. Fault conditions such as overload, overtemperature or short to V CC are reported via the current sense pin. Output current limitation protects the device in overload conditions. The device latches off in case of overload or thermal shutdown. The device is reset by a low level pass on the fault reset standby pin. A permanent low level on the inputs and on the fault reset standby pins disables all outputs and sets the device in standby mode. Max transient supply voltage V CC 58 V Operating voltage range V CC 8 to 36 V Typ on-state resistance (per ch.) R ON 35 mΩ Current limitation (typ) I LIM 42 A Off-state supply current I S 2 µA 0OWER33/ ("1($'5

Table 9. Current sense (8 V < V

1 Block diagram and pin description

Figure 1. Block diagram Table 1. Pin function FR_Stby pin is needed to reset the channel. The device enters in standby mode if all inputs and the FR_Stby pin are low.

Figure 2. Configuration diagram PowerSSO-24 (top view) Table 2. Suggested connections for unused and not connected pins

2 Electrical specifications

Figure 3. Current and voltage conventions

2.1 Absolute maximum ratings

Table 3. Absolute maximum ratings

2.2 Thermal data

  1. In case no diode are connected in anti-paralled to load.

Table 3. Absolute maximum ratings (continued) Table 4. Thermal data

2.3 Electrical characteristics

8V<V CC <3 6V ; - 4 0° C<Tj < 150 °C, unless otherwise specified. Table 5. Power section

  1. PowerMOS leakage included

Table 6. Switching (VCC =2 4V ; Tj =2 5° C )

Figure 4. Treset definition Table 7. Logic inputs

Figure 5. TSTBY definition Table 8. Protections and diagnostics

Table 9. Current sense (8 V < VCC <3 6V )

  1. Parameter guaranteed by design; it is not tested.
  2. Fault condition includes: power limitation, ov ertemperature and open load in off-state condition.

0.2 A < IOUT <1 2A ;

Figure 12. Device behavior in overload condition Table 11. Truth table

2.4 Electrical characteristics curves

Figure 13. Off-state output current Figure 14. High-level input current Figure 15. Input clamp voltage Figure 16. High-level input voltage Figure 17. Low-level input voltage Figure 18. Input hysteresis voltage

3 Application information

Figure 24. Application schematic

3.1 Maximum demagnetization energy (V CC = 24 V)

Figure 25. Maximum turn-off current versus inductance (with no diodes connected in

4 Package and PCB thermal data

4.1 PowerSSO-24 thermal data

Figure 26. PowerSSO-24 PC board

  1. Layout condition of R th and Zth measurements (PCB: double layer, thermal vias, FR4 area = 77 mm x

minimum pad lay-out to 8 cm 2). Figure 27. Rthj-amb vs PCB copper area in open box free air condition (one channel ON)

Table 12. Thermal parameters

5 Package and packing information

specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark.

5.1 PowerSSO-24 package information

Figure 30. PowerSSO-24 package dimensions

Table 13. PowerSSO-24 mechanical data

Table 13. PowerSSO-24 mechanical data (continued)

5.2 PowerSSO-24 packing information

Figure 31. PowerSSO-24 tube shipment (no suffix) Figure 32. PowerSSO-24 tape and reel shipment (suffix “TR”)

6 Order codes

Table 14. Device summary

7 Revision history

Table 15. Document revision history 22-Jan-2016 1 Initial release.