for further information contact your local stmicroelectronics sales office. january 2013 doc id 024135 rev 1 1/8 8 EVAL6229QR demonstration board mounting the l6229q dual full-bridge driver data brief features operating supply voltage from 8 to 52 v 2.8 a output peak current (1.4 a r.m.s. ) r ds(on) 0.73 typ. value @ t j = 25 c operating frequency up to 100 khz non-dissipative overcurrent detection and protection diagnostic output constant t off pwm current controller slow decay synchronous rectification 60 and 120 hall effect decoding logic brake function cross conduction protection thermal shutdown undervoltage lockout integrated fast free wheeling diodest description the l6229q is a dmos fully integrated three- phase motor driver with overcurrent protection, realized in bcd multipower technology. the device includes all the circuitry needed to drive a three-phase bldc motor including: a three-phase dmos bridge, a constant off-time pwm current controller and the decoding logic for single ended hall sensors that generates the required sequence for the power stage. the l6229q features a non-dissipative overcurrent protection on the high-side power mosfets and thermal shutdown. www.st.com
board description EVAL6229QR 2/8 doc id 024135 rev 1 1 board description figure 1. EVAL6229QR demonstration board description table 1. electrical specifications (recommended values) parameter value supply voltage range (vs) 8 to 52 v output current rating (outx) up to 1.4 a r.m.s. switching frequency up to 100 khz voltage reference range (vref) 0 to + 5 v input and enable voltage range 0 to + 5 v l6229q thermal resistance junction-to-ambient 42 c/w
EVAL6229QR board description doc id 024135 rev 1 3/8 table 2. EVAL6229QR pin description name type function vs power supply half-bridge power supply voltage pgnd ground power ground terminal vdd power supply hall effect sensors pull-up voltage h1 sensor input single ended hall effect sensor input 1 h2 sensor input single ended hall effect sensor input 2 h3 sensor input single ended hall effect sensor input 3 sgnd ground signal ground terminal diag open-drain output diagnostic pin. when ?low? signals an overcurrent or overtemperature event. tacho open-drain output frequency-to-voltage open drain output. every pulse from h1 pin is shaped as a fixed and adjustable length pulse. f/r logic input selects the direction of the rotation (?h? = cw; ?l? = ccw). en logic input/output chip enable (active ?high?). when ?low? switches off all power mosfets of three half-bridges. vref analog input current controller reference voltage brake logic input brake input pin. when ?low? switches on all high-side power mosfets implementing the brake function. out1 power output output phase 1 out2 power output output phase 2 out3 power output output phase 3
board description EVAL6229QR 4/8 doc id 024135 rev 1 figure 2. EVAL6229QR schematic pgnd pgnd vdd vdd r9 r9 tacho tacho r11 r11 1 2 3 d1 d1 c 3 c 3 out1 3 1 s en s ea 29 out 3 19 rcoff 3 0 out2 2 3 tacho 9 h1 27 diag 2 8 rcpul s e 11 vref 15 h2 25 fwr/rew 1 3 s en s eb 12 brake 16 h 3 26 en 14 gnd 1 gnd 21 vboot 17 v s b 20 nc 10 nc 1 8 v s a 22 vcp 24 nc - epad 6 nc - epad 2 nc - epad 3 nc - epad 4 nc - epad 5 nc - epad 7 nc - epad 8 nc 3 2 u1 l6229q u1 l6229q c6 c6 c7 c7 en en h2 h2 c 8 c 8 r 8 r 8 h 3 h 3 out1 out1 c5 c5 h1 h1 r12 r12 r 3 r 3 f/r f/r vref vref c4 c4 c1 c1 c2 c2 out2 out2 r5 r5 r7 r7 brake brake r6 r6 diag diag out 3 out 3 r2 r2 v s v s r1 r1 s gnd s gnd r4 r4 r10 r10 am16550v1
EVAL6229QR board description doc id 024135 rev 1 5/8 figure 3. EVAL6229QR component placement table 3. EVAL6229QR component list part reference part value part description c1 220nf/100v capacitor c2 100f/63v capacitor c3 10nf/25v capacitor c4, c8 220nf/25v capacitor c5 5.6nf capacitor c6 820pf capacitor c7 10nf resistor d1 bat46sw diodes r1, r2, r3, r4 100k 5% 0.25w resistor r5, r6, r7 10k 5% 0.25w resistor r8 100k 1% 0.25w resistor r9 20k 1% 0.25w resistor r10 0.4 1w resistor r11 20k 5% 0.25w resistor r12 2k 5% 0.25w resistor u1 l6229q 3-phase bldc motor driver in vfqfpn5x5
board description EVAL6229QR 6/8 doc id 024135 rev 1 figure 4. EVAL6229QR top layer layout figure 5. EVAL6229QR bottom layer layout
EVAL6229QR revision history doc id 024135 rev 1 7/8 2 revision history table 4. document revision history date revision changes 10-jan-2013 1 initial release.
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