IR(F3711S, с 2.5В на затворе открыт, не запирается)

IR(F3711S, с 2.5В на затворе открыт, не запирается)
G - +11.15В
D - 0
S - 0
ST(B55NF, до 2.5В на затворе закрыт)
G - 0
D - +12.02В
S - 0

IRU3055
Напряжение на контактах в +вольтах:
1 - 2.02 -Rt - This pin programs the oscillator frequency in the range of 50-500KHz with an external resistor connected from this pin to the ground
2 - 3.80 - Comp - Compensation for error amplifier
3 - 0.06 Fb - This pin is connected directly to the output of the Core supply to provide feedback to the Error amplifier
4 - 1.95 - SS (This pin provides the Soft-Start for the switching regulator)
5 - 0 - CS1 - Current sense feedback for channel 1, 2, 3
6 - 0.01 - CS2
7 - 0.01 - CS3

8 - 5.1 - V_cc (5V supply voltage)
9 - 1.53 - V_set (Output of the DAC)
10- 4.07 --------D0
11- 0.1 --------D1
12- 4.07 --------D2
13- 4.07 --------D3
14 - 0.11 --------D4
15- 0.07 - Fault (detector)
16- 0.65 - OCSet - This pin is connected to the D of the synchronous MOSFET in ch. 1 of the Core supply, provides the positive sensing for the int. current sensing circuitry
17- 0 - Gnd
18- 0.01 - SD (shut down pin)
-----------------------------------------------------------
19- 0.15 - PGood - Power good pin. This pin is a collector output that switches Low when the output of the
converter is not within +/-10%(typ) of the nominal output voltage.
20- 1.97 - Ref (2V)
21- 10.6 - V_ch3
22- 0 - HDrv3
23- 0 - PGnd3
24- 11.15 - LDrv3
25- 11.95 - V_cl23
26- 11.15 - LDrv2
27- 0 - PGnd2
28- 0 - Gnd
29- 0 - No connection
30- 0 - HDrv2
31- 10.6 - V_ch12
32- 0 - HDrv1
33- 0 - OCGnd
34- 0 - PGnd1
35- 11.15 - LDrv1
36- 11.95 - V_cl1
линк на даташит - gaw.ru/html.cgi/txt/ic/IR/control/pwm/IRU3055.htm