L6229QTR STMicroelectronics, L6229QTR Datasheet
L6229QTR
Specifications of L6229QTR
Available stocks
Related parts for L6229QTR
L6229QTR Summary of contents
Page 1
... Thermal shutdown ■ Under voltage lockout ■ Integrated fast free wheeling diodes Table 1. Device summary Order codes L6229Q L6229QTR August 2010 = 25 ° Description The L6229Q is a DMOS fully integrated three- phase motor driver with overcurrent protection. Realized in BCDmultipower technology, the device combines isolated DMOS power transistors with CMOS and bipolar circuits on the same chip ...
Page 2
Contents Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 3
L6229Q 1 Block diagram Figure 1. Block diagram VBOOT VCP DIAG EN BRAKE FWD/REV RCPULSE TACHO V BOOT THERMAL CHARGE PROTECTION PUMP OCD1 OCD OCD2 OCD3 OCD GATE LOGIC HALL-EFFECT SENSORS DECODING LOGIC TACHO ...
Page 4
Electrical data 2 Electrical data 2.1 Absolute maximum ratings Table 2. Absolute maximum ratings Symbol Parameter V Supply voltage S Differential voltage between OUT , OUT OUT , SENSE ...
Page 5
L6229Q 2.3 Thermal data Table 4. Thermal data Symbol R Thermal resistance junction-ambient max. th(JA) 1. Mounted on a double-layer FR4 PCB with a dissipating copper surface of 0 ground layer connected through 18 via holes (9 ...
Page 6
Pin connection 3 Pin connection Figure 2. Pin connection (top view) GND Note: 1 The pins are connected to die PAD. 2 The die PAD must be connected to GND ...
Page 7
L6229Q Table 5. Pin description N° Pin Type 1, 21 GND GND Open drain 9 TACHO output 11 RCPULSE RC pin 12 SENSE Power supply B 13 FWD/REV Logic input 14 EN Logic input 15 VREF Logic input 16 BRAKE ...
Page 8
Electrical characteristics 4 Electrical characteristics Table 6. Electrical characteristics ( °C, unless otherwise specified Symbol Parameter V Turn-on threshold Sth(ON) V Turn-off threshold Sth(OFF) I Quiescent supply current S T Thermal shutdown ...
Page 9
L6229Q Table 6. Electrical characteristics (continued °C, unless otherwise specified Symbol Parameter f Charge pump frequency CP PWM comparator and monostable I Source current at pin RCOFF RCOFF V Offset voltage ...
Page 10
Electrical characteristics Figure 3. Switching characteristic definition EN V th(ON) V th(OFF) I OUT 90% 10% D01IN1316 Figure 4. Overcurrent detection timing definition 10/28 t FALL t D(OFF)EN I OUT I SOVER ON BRIDGE OFF V DIAG 90% 10% t ...
Page 11
L6229Q 5 Circuit description 5.1 Power stages and charge pump The L6229Q integrates a three-phase bridge, which consists of 6 power MOSFETs connected as shown on the block diagram (see = 0.73 Ω (typical value @ 25 °C) with intrinsic ...
Page 12
Circuit description 5.2 Logic inputs Pins FWD/REV, BRAKE, EN, H1, H2 and H3 are TTL/CMOS and microcontroller compatible logic inputs. The internal structure is shown in thresholds are respectively V Pin EN (Enable) has identical input structure with the exception ...
Page 13
L6229Q 5.3 PWM current control The L6229Q includes a constant off time PWM current controller. The current control circuit senses the bridge current by sensing the voltage drop across an external sense resistor connected between the source of the three ...
Page 14
Circuit description Figure 10. Output current regulation waveforms I OUT V REF R SENSE V SENSE V REF 2.5V ON SYNCHRONOUS RECTIFICATION OFF D02IN1351 Figure 11 shows the magnitude of the Off Time t approximately calculated ...
Page 15
L6229Q t > t ⎧ MIN ⎨ > ⎩ RCRISE t = 600 · C RCRISE Figure 12 shows the lower limit for the on time t capacity. It has to be said that ...
Page 16
Circuit description 5.4 Slow decay mode Figure 13 shows the operation of the bridge in the slow decay mode during the off time. At any time only two legs of the three-phase bridge are active, therefore only the two active ...
Page 17
L6229Q and the 120 codes it is possible to drive the motor with all the four conventions by changing the direction set. Table 8. 60 and 120 electrical degree decoding logic in forward direction Hall 120° 1 Hall 60° 1 ...
Page 18
Circuit description 5.6 Tacho A tachometer function consists of a monostable, with constant off time (t is one hall effect signal (H external op amp, as shown in Information section. The monostable output drives an open drain output pin (TACHO). ...
Page 19
L6229Q Figure 17. Tachometer speed control loop V REF Figure 18. t PULSE RCPULSE PUL REF2 2 versus C and R PUL PUL 4 1 ...
Page 20
Circuit description 5.7 Non-dissipative overcurrent detection and protection The L6229Q integrates an overcurrent detection circuit (OCD) for full protection. This circuit provides output-to-output and output-to-ground short circuit protection as well. With this internal over current detection, the external current sense ...
Page 21
L6229Q Figure 20. Overcurrent protection waveforms Figure 21. t DISABLE Figure 22. t DELAY I OUT I SOVER DIAG th(ON) V th(OFF) ON OCD OFF ON t BRIDGE DELAY OFF OCD(ON) ...
Page 22
Application information 6 Application information A typical application using L6229Q is shown in application are shown in 100 nF to 200 nF should be placed between the power pins VS the L6229Q to improve the high frequency filtering on the ...
Page 23
L6229Q Figure 23. Typical application THREE-PHASE MOTOR HALL SENSOR + 6.1 Output current capability and ic power dissipation In Figure 24 is shown the approximate relation between the output current and ...
Page 24
Application information 6.2 Thermal management In most applications the power dissipation in the IC is the main factor that sets the maximum current that can be delivered by the device in a safe operating condition. Therefore, it has to be ...
Page 25
L6229Q 7 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. ECOPACK® ...
Page 26
Package mechanical data Figure 25. Package dimensions 26/28 Doc ID 15209 Rev 3 L6229Q ...
Page 27
L6229Q 8 Revision history Table 11. Document revision history Date 25-Nov-2008 26-Feb-2009 30-Aug-2010 Revision 1 First release 2 Updated Table 4 on page 5 3 Updated Table 1 on page 1 Doc ID 15209 Rev 3 Revision history Changes 27/28 ...
Page 28
... 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. ...