FNB40560_15 Datasheet, PDF (13/16 Pages) Fairchild Semiconductor – Motion SPMR 45 Series

RS
Gating UH
RS
Gating VH
M ^{Gating WH}
C
U
RS
CPS CPS CPS
+15 V
CSP15
+5 V
Fault
CBPF
Gating UL
Gating VL
Gating WL
RPF
RS
CPF
CSPC05 C_SP05
RS
RS
RS
CPS CPS CPS
CBS
(26) VB(U)
CBSC
(25) VS(U)
(20) IN(UH)
CBS
(24) VB(V)
CBSC
(23) VS(V)
(19) IN(VH)
CBS
(22) VB(W)
CBSC
(21) VS(W)
(18) IN(WH)
(17) VCC(H)
CSPC15
(15) COM
(16) VCC(L)
HVIC
VB(U)
VS(U)
IN(UH)
OUT(UH)
VS(U)
VB(V)
VS(V)
IN(VH)
VB(W)
OUT(VH)
VS(V)
VS(W)
IN(WH)
VCC
COM
OUT(WH)
VS(W)
LVIC
VCC
OUT(UL)
CSC
RF
RTH
(11) VFO
VFO
(14) IN(UL)
(13) IN(VL)
(12) IN(WL)
IN(UL)
IN(VL)
IN(WL)
(10) CSC
(1) VTH
COM
CSC
(2) RTH ^THERMISTOR
OUT(VL)
OUT(WL)
P (3)
U (4)
V (5)
W (6)
M
CDCS
VDC
NU (7)
RSU
RSV
NV (8)
NW (9)
RSW
Input Signal for
Short-Circuit Protection
Temp. Monitoring
U-Phase Current
V-Phase Current
W-Phase Current
Figure 15. Typical Application Circuit
3rd Notes:
1) To avoid malfunction, the wiring of each input should be as short as possible (less than 2 - 3 cm).
2) By virtue of integrating an application-specific type of HVIC inside the Motion SPM^® 45 product, direct coupling to MCU terminals without any optocoupler or transformer isola-
tion is possible.
3) V_FO output is open-drain type. This signal line should be pulled up to the positive side of the MCU or control power supply with a resistor that makes I_FO up to 1 mA (please
refer to Figure 14).
4) C_SP15 of around seven times larger than bootstrap capacitor C_BS is recommended.
5) Input signal is active-HIGH type. There is a 5 kΩ resistor inside the IC to pull down each input signal line to GND. RC coupling circuits is recommanded for the prevention of
input signal oscillation. R_SC_PS time constant should be selected in the range 50 ~ 150 ns (recommended R_S = 100 ʃ, C_PS = 1 nF).
6) To prevent errors of the protection function, the wiring around R_F and C_SC should be as short as possible.
7) In the short-circuit protection circuit, please select the R_FC_SC time constant in the range 1.5 ~ 2 μs.
8) The connection between control GND line and power GND line which includes the N_U, N_V, N_W must be connected to only one point. Please do not connect the control GND
to the power GND by the broad pattern. Also, the wiring distance between control GND and power GND should be as short as possible.
9) Each capacitor should be mounted as close to the pins of the Motion SPM 45 product as possible.
10) To prevent surge destruction, the wiring between the smoothing capacitor and the P & GND pins should be as short as possible. The use of a high-frequency non-inductive
capacitor of around 0.1 ~ 0.22 μF between the P and GND pins is recommended.
11) Relays are used in almost every systems of electrical equipment in home appliances. In these cases, there should be sufficient distance between the MCU and the relays.
12) The zener diode or transient voltage suppressor should be adopted for the protection of ICs from the surge destruction between each pair of control supply terminals
(recommanded zener diode is 22 V / 1 W, which has the lower zener impedance characteristic than about 15 ʃ).
13) Please choose the electrolytic capacitor with good temperature characteristic in C_BS. Also, choose 0.1 ~ 0.2 μF R-category ceramic capacitors with good temperature and
frequency characteristics in C_BSC.
14) For the detailed information, please refer to the AN-9070, AN-9071, AN-9072, RD-344, and RD-345.
©2011 Fairchild Semiconductor Corporation
13
Motion SPM® 45 Series Rev. C4
www.fairchildsemi.com