Rohm BD16950EFV-EVK-001, User Manual

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© 2021 ROHM Co., Ltd.
No. 63UG103E Rev.001
2021.2
User’s Guide
BD16950EFV-EVK-001
Typical register settings which are suitable for operating this EVK are summarized in Table 3.
Address Value Description
04h 0Ah Source current = 10 mA
05h 1Eh Sink current = 30 mA
06h 10h CCPT = 5 µs
07h 02h OCP = 400 mV
08h 09h OCP Filter = 10 µs
02h 48h Ch1 = Mode 9, CH2 = Mode 2
01h 04h EN = High (note 1)
01h 06h EN + CP = High (note 2)
01h 07h EN + CP + DRVEN = High (note 3)
Table 3: Typical register settings
(note 1)MCU sends the EN=’1’ command. State is changed to Normal state.
(note 2)MCU sends the CPEN=’1’ command. Charge pump circuit is activated. Charge time is 0.2ms(Max).
(note 3)MCU sends the DRVEN=’1’ command. GH1, GL1, GH2 and GL2 outputs are active(Constant current driving).
Each register setting is set before DRVEN=’1’.
Resister (Addr.: Description)
SET (Mode Setting)
v1
OFF
v1
Basic CW
v1
Basic CCW
v1
PWM1 CW
v1
PWM2
CCW
0x02: Mode Setting Ch2, Ch1 00 18 81 18 81
0x03: Protection Mode Setting FC FC FC FC FC
0x04: Half-br Motor Op. set 1 Curr_Src[ ] 1F 1F 1F 1F 1F
0x05: Half-br Motor Op. set 2 Curr_SINK[ ] 1F 1F 1F 1F 1F
0x06: Half-br Motor Op. set 1 CCPT[ ] 07 07 07 07 07
0x07: OCP setting OCPHD[ ], OCPLD[ ] 0B 0B 0A 0B 0B
0x08: OCP Filter time setting OCP-FILT[] 09 09 09 09 09
Table 4: ( SET pull-down menu) Pre-defined register setting value v1 [hex]
Resister (Addr.: Description)
SET (Mode Setting)
v2
OFF
v2
Basic CW
v2
Basic CCW
v2
PWM1 CW
v2
PWM2
CCW
0x02: Mode Setting Ch2, Ch1 00 18 81 18 81
0x03: Protection Mode Setting FC FC FC FC FC
0x04: Half-br Motor Op. set 1 Curr_Src[ ] 10 10 10 10 10
0x05: Half-br Motor Op. set 2 Curr_SINK[ ] 1E 1E 1E 1E 1E
0x06: Half-br Motor Op. set 1 CCPT[ ] 07 07 07 07 07
0x07: OCP setting OCPHD[ ], OCPLD[ ] 0B 0B 0B 0A 0B
0x08: OCP Filter time setting OCP-FILT[] 09 09 09 09 09
Table 5: ( SET pull-down menu) Pre-defined register setting value v2 [hex]