L6229Q STMicroelectronics, L6229Q Datasheet
L6229Q
Specifications of L6229Q
Available stocks
Related parts for L6229Q
L6229Q Summary of contents
Page 1
... 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. The device includes all the circuitry needed to ...
Page 2
... PWM current control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.4 Slow decay mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.5 Decoding logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.6 Tacho . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 5.7 Non-dissipative overcurrent detection and protection . . . . . . . . . . . . . . . 20 6 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 6.1 Output current capability and ic power dissipation . . . . . . . . . . . . . . . . . . 23 6.2 Thermal management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 2/28 Doc ID 15209 Rev 3 L6229Q ...
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 MONOSTABLE 10V 5V VOLTAGE ONE SHOT REGULATOR MONOSTABLE Doc ID 15209 Rev 3 Block diagram ...
Page 4
... A SENSEA GND and < PULSE pin Parameter SENSE and SENSEA , SENSE B B and REFA (pulsed t < t and W A (DC) Doc ID 15209 Rev 3 Value SENSEB - 3.55 1.4 S -40 to 150 Min Max SENSEB -0 1.4 -25 +125 100 L6229Q Unit °C Unit °C kHz ...
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 below the IC). Parameter (1) Doc ID 15209 Rev 3 Electrical data Value Unit °C the top side plus 6 ...
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 pin. 6/ Doc ID 15209 Rev VCP 23 OUT2 22 VSA 21 GND 20 VSB 19 OUT3 VBOOT L6229Q ...
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 Logic input Supply 17 VBOOT voltage 19 OUT Power output Output half bridge 3. ...
Page 8
... T J =125 °C ( Low; OUT = Low; OUT = GND LOW 1 GND logic input voltage 7 V logic input voltage ( 1.4 A, resistive load LOAD Doc ID 15209 Rev 3 L6229Q Min Typ Max Unit 5.8 6 °C 165 Ω 1.47 1.69 Ω 2.35 2 ...
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 on sense comparator OFFSET t Turn OFF propagation delay prop Internal blanking time on sense t blank comparator t Minimum on time ...
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 OCD(ON) OCD(OFF) Doc ID 15209 Rev 3 L6229Q RISE t D(ON)EN D02IN1387 ...
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 fast freewheeling diode. Switching R DS(ON) patterns are generated by the PWM current controller and the hall effect sensor decoding logic (see relative paragraph 3 ...
Page 12
... Doc ID 15209 Rev 3 6. Typical value for turn-on and turn-off = 1 Figure 11. If driven by an open drain are connected as shown in EN and the capacitor EN should be chosen in the range EN and C are respectively 10 kΩ and D01IN1329 5V ESD PROTECTION D02IN1378 5V ESD PROTECTION D02IN1379 L6229Q ...
Page 13
... Immediately after the power MOS turn on, a high peak current flows through the sense resistor due to the reverse recovery of the freewheeling diodes. The L6229Q provides a 1 µs blanking time t BLANK prematurely re trigger the monostable ...
Page 14
... RCRISE . ON(MIN) Doc ID 15209 Rev OFF 1μs t BLANK Slow Decay t RCRISE t RCFALL 1μ versus C and R values. It can be OFF OFF is the internally generated DT of the voltage at the RCRISE for allowing a RCRISE can not be smaller ON L6229Q , which ON ...
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 t this condition, but it can be smaller than t to work but the off time t So, small C value gives more flexibility for the applications (allows smaller on time and, ...
Page 16
... Hall codes for 240 phasing is the reverse of 120. So, by decoding the 60 16/28 B) 1μs DEAD TIME C) SYNCHRONOUS Figure 15, positions and 6b). Four of them are and H ) there is one output configuration (OUT Doc ID 15209 Rev 3 D) 1μs DEAD TIME RECTIFICATION Figure 14, positions L6229Q , 1 ...
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° OUT Vs 1 OUT High Z 2 OUT GND ...
Page 18
... PULSE , C ) connected to the pin RCPULSE. PUL PUL and PULSE PUL PUL · C PUL t PULSE ----------------- - TACHO PULSE T Doc ID 15209 Rev 3 ), whose input PULSE Figure 16). The off time t PULSE . We have approximately: in the range PUL , which sets the REF ⋅ DD L6229Q can be Figure 18 ...
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 47kΩ R PUL 20kΩ R PUL 100 Cpul [nF] Doc ID 15209 Rev 3 Circuit description H 1 TACHO MONOSTABLE C PUL TACHO VREF C REF1 R = 100kΩ PUL 100 ...
Page 20
... 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 resistor normally used and its associated power dissipation are eliminated ...
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) EN(FALL) OCD(OFF) t D(OFF)EN versus C and Ω Ω versus 0 Cen [nF] Doc ID 15209 Rev 3 Circuit description V EN(LOW) t DISABLE t t EN(RISE) ...
Page 22
... VS the L6229Q to improve the high frequency filtering on the power supply and reduce high frequency transients generated by the switching. The capacitor (C EN input to ground sets the shut down time when an over current is detected (see overcurrent protection) ...
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 the IC power dissipation using PWM current control. For a given output current the power dissipated by the IC can be easily evaluated, in order to establish which package should be used and how large must be the on-board copper dissipating area to guarantee a safe operating junction temperature (125 ° ...
Page 24
... PCB with proper area and thickness. For instance, using a VFQFPN32L package the typical R mounted on a double-layer FR4 PCB with a dissipating copper area of 0 side plus 6 cm ground layer connected through 18 via holes (9 below the IC). 24/28 Doc ID 15209 Rev 3 L6229Q is about 42 °C/W when th(JA the top ...
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® trademark. Table 10. VFQFPN 1.0, 32 lead, pitch 0.50 Dim ...
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
... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 28/28 Please Read Carefully: © 2010 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 15209 Rev 3 L6229Q ...