for further information contact your local stmicroelectronics sales office. january 2013 doc id 024141 rev 1 1/8 8 EVAL6226QR demonstration board mounting the l6226q dual full-bridge driver data brief features operating supply voltage from 8 to 52 v 2.8 a output peak current (1.4 a dc) r ds(on) 0.73 typ. value @ t j = 25 c operating frequency up to 100 khz programmable high-side overcurrent detection and protection diagnostic output paralleled operation cross conduction protection thermal shutdown undervoltage lockout integrated fast free wheeling diodes description the l6226q is a dmos dual full-bridge designed for motor control applications, realized in bcd multipower technology. the l6226q features thermal shutdown and a non-dissipative overcurrent detection on the high-side power mosfets plus a diagnostic output that can be easily used to implement the overcurrent protection. www.st.com
board description EVAL6226QR 2/8 doc id 024141 rev 1 1 board description figure 1. EVAL6226QR demonstration board description table 1. EVAL6226QR electrical specifications (recommended values) parameter value supply voltage range (vs) 8 to 52 vdc output current rating (outx) up to 1.4 a r.m.s. switching frequency up to 100 khz input and enable voltage range 0 to + 5 v ocd pin voltage range -0.3 to 10 v l6226q thermal resistance junction-to-ambient 42c/w ena in2a in1a diaga pgnd vs out1a out2a out2b out1b enb in1b in2b diagb sgnd am16527v1
EVAL6226QR board description doc id 024141 rev 1 3/8 table 2. EVAL6226QR pin connections name type function vs power supply bridge a and bridge b power supply pgnd ground power ground terminal in1a logic input bridge a logic input 1 in2a logic input bridge a logic input 2 ena logic input bridge a enable (active high). when low, the power dmoss of bridge a are switched off. in1b logic input bridge b logic input 1 in2b logic input bridge b logic input 2 enb logic input bridge b enable (active high). when low, the power dmoss of bridge b are switched off. diaga open drain output bridge a overcurrent detection and thermal protection pin. an internal open drain transistor pulls to gnd when overcurrent on bridge a is detected or in case of thermal protection. diagb open drain output bridge b overcurrent detection and thermal protection pin. an internal open drain transistor pulls to gnd when overcurrent on bridge b is detected or in case of thermal protection. sgnd ground signal ground terminal out1a power output bridge a output 1 out2a power output bridge a output 2 out1b power output bridge b output 1 out2b power output bridge b output 2
board description EVAL6226QR 4/8 doc id 024141 rev 1 figure 2. EVAL6226QR schematic in1a in2a in2b in1b out1a out2a out1b out2b ena enb diaga diagb v s s gnd pgnd l6226q c4 c4 r 3 r 3 r4 r4 1 2 3 d1 b a t46 s w d1 b a t46 s w c1 c1 c5 c5 r1 r1 c6 c6 r 6 r 6 c2 c2 c 3 c 3 r2 r2 r5 r5 g n d 1 in 1a 27 g n d 21 s en s e a 29 vboo t 17 in 2a 2 8 v s b 20 progcla 2 6 in 1b 1 3 v s a 2 2 vc p 24 progclb 15 enb 16 ena 25 in 2b 14 ocdb 11 ocda 3 0 out1a 3 1 s en s e b 12 out1b 9 out2a 2 3 out2b 19 nc 2 nc 3 nc 4 nc 5 nc 6 nc 7 nc 8 nc 10 nc 1 8 nc 3 2 u1 l6226 vfqfpn5x5 u1 l6226 vfqfpn5x5 am1652 8 v1
EVAL6226QR board description doc id 024141 rev 1 5/8 figure 3. component placement table 3. EVAL6226QR part list part reference part value part description c1 220 nf/25 v capacitor c2 220 nf/63 v capacitor c3 10 nf/25 v capacitor c4 100 f/63 v capacitor c5, c6 5.6 nf capacitor d1 bat46sw diodes r1, r2, r3, r4 100 k 5% 0.25 w resistor r5, r6 10 k 1% 0.25 w resistor r9, r10 0.4 k 1 w resistor u1 l6226q dual full-bridge in vfqfpn5x5 24.5 mm 27 mm am16529v1
board description EVAL6226QR 6/8 doc id 024141 rev 1 figure 4. top layer layout figure 5. bottom layer layout am165 3 0v1 am165 3 1v1
EVAL6226QR revision history doc id 024141 rev 1 7/8 2 revision history table 4. document revision history date revision changes 11-jan-2013 1 initial release.
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