STPA001 STM | Alldatasheet
Document overview
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- PDF pages: 26
Technical content
Datasheet sections
- 1 Overview
- 1.1 Block diagram and application circuit
- 2 Pin description
- 2.1 Pin connection
- 2.2 Pin functions
- 3 Electrical specifications
- 3.1 Absolute maximum ratings
- 3.2 Thermal data
- 3.3 Electrical characteristics
- 3.4 Electrical characteristics curves
- 4 General information
- 4.1 Operation
- 4.2 Battery variations
- 4.2.1 Low voltage operation
- 4.2.2 Cranks
- 4.2.3 Advanced battery management (hybrid vehicles)
- 4.3 Protections
- 4.3.1 Short circuits and open circuit operation
- 4.3.2 Over-voltage and load dump protection
- 4.3.3 Thermal protection
- 4.4 Warnings
- 4.4.1 DC offset detection (OD pin)
- 4.4.2 Clipping detection and diagnostics (CD-DIAG pin)
- 4.5 Heat sink definition
- 5 Package information
- 6 Revision history
Features
Multipower BCD technology High output power capability: – 4 x 50 W/4 Ω Max. – 4 x 28 W/4 Ω @ 14.4 V, 1 kHz, 10 % – 4 x 72 W/2 Ω Max. MOSFET output power stage 2 Ω driving capability Hi-Fi class distortion Low output noise High immunity to RF noise injection Standby function Mute function Automute at min. supply voltage detection Low external component count Internally fixed gain (26 dB) Protections: – Output short circuit to GND, to Vs, across the load – Very inductive loads – Overrating chip temperature with soft thermal limiter – Output DC offset detection – Load dump – Fortuitous open GND – Reversed battery – ESD – Capable to operate down to 6 V (e.g. “Startstop”)
Description
The STPA001 is a breakthrough MOSFET technology class AB audio power amplifier designed for high power car radio. The fully complementary P-Channel/N-Channel output structure allows a rail to rail output voltage swing which, combined with high output current and minimized saturation losses sets new power references in the car-radio field, with unparalleled distortion performances. The STPA001 can operate down to 6 V and this makes the IC compliant to the most recent OEM specifications for low voltage operation (so called 'start-stop' battery profile during engine stop), helping car manufacturers to reduce the overall emissions and thus contributing to environment protection. '!0'03 '!0'03 '!0'03 '!0'03 Flexiwatt27 (Vertical) Flexiwatt25 (Vertical) Flexiwatt25 (Horizontal) Flexiwatt27 (Horizontal) Table 1. Device summary
1 Overview
producing pop noise and continuing to play during battery transitions. circuit, over-voltage and over-temperature.
1.1 Block diagram and application circuit
Figure 1. Block diagram
2 Pin description
2.1 Pin connection
Figure 4. Pin connection (top view)
2.2 Pin functions
Table 2. Pin functions
11 T A B -
3 Electrical specifications
3.1 Absolute maximum ratings
3.2 Thermal data
Table 3. Absolute maximum ratings Table 4. Thermal data
3.3 Electrical characteristics
Tamb = 25 °C; unless otherwise specified. Table 5. Electrical characteristics
Table 5. Electrical characteristics (continued)
3.4 Electrical characteristics curves
Figure 5. Quiescent current vs. supply voltage Figure 6. Output power vs. supply voltage (4 Ω) Figure 7. Output power vs. supply voltage (2 Ω) Figure 8. Distortion vs. output power (4 Ω) Figure 9. Distortion vs. frequency (4 Ω) Figure 10. Distortion vs. output power
4 General information
4.1 Operation
Figure 2: Application circuit (STPA001)). Standby and mute pins are both CMOS compatible. transitions for preventing any audible transient noise. but a 470 kΩ resistance should be present between the power supply and the pins. capacitor on SVR is charged very quickly to VCC/4, as shown in the following figure. transition has to be slower than 2.5 V/ms. Figure 20. SVR charge diagram discharged or charged consequently.
4.2 Battery variations
4.2.1 Low voltage operation
voltage returns to the correct voltage.
4.2.2 Cranks
allowed battery transitions. Figure 21. Battery cranking curve example 1 Figure 22. Battery cranking curve example 2
4.2.3 Advanced battery management (hybrid vehicles)
Figure 23. Upwards fast battery transitions diagram
4.3 Protections
4.3.1 Short circuits and open circuit operation
condition until the short is removed. only when the output returns inside the limits imposed by an internal voltage comparator. check is repeated every 100 μs.
4.3.2 Over-voltage and load dump protection
state. It stops to playing till the supply voltage returns in the permitted range. rising time lower than 5 ms (see Figure 24). Figure 24. Load dump protection diagram
4.3.3 Thermal protection
Figure 25. Thermal protection diagram
4.4 Warnings
4.4.1 DC offset detection (OD pin)
amplifier un-muted and no signal at the inputs. (typ), the OD pin is pulled down.
4.4.2 Clipping detection and diagnostics (CD-DIAG pin)
till these shorts are present to inform the user a protection occurred. down to notify this occurrence. Figure 26. Audio section waveforms
General information STPA001
4.5 Heat sink definition
Assuming we have a maximum dissipated power of 26 W (e.g. in the worst case situation of frequent clipping occurrence), considering Tj max is 150°C and assuming ambient temperature is 70 °C, the available temperature gap for a correct dissipation is 80 °C. This means the thermal resistance of the system RTh has to be 80 °C/26 W = 3 °C/W. The junction to case thermal resistance is 1 °C/W. So the heat sink thermal resistance should be approximately 2 °C/W. This would avoid any thermal shutdown occurrence even after long-term and full-volume operation.
5 Package information
specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. Figure 27. Flexiwatt27 (vertical) mechanical data and package dimensions
Figure 28. Flexiwatt27 (horizontal) mechanical data and package dimensions
Figure 29. Flexiwatt25 vertical mechanical data and package dimensions
Figure 30. Flexiwatt25 (horizontal) mechanical data and package dimensions
6 Revision history
Table 6. Document revision history 03-Apr-2012 1 Initial release. 10-Sep-2012 2 Updated Table 3: Absolute maximum ratings on page 9 . Added Section 3.4: Electrical characteristics curves . 18-Sep-2013 5 Updated Disclaimer. Updated Table 1: Device summary on page 1 . package dimensions on page 24 . Updated Table 1: Device summary on page 1 .